{"id":182,"date":"2021-06-13T18:02:29","date_gmt":"2021-06-14T01:02:29","guid":{"rendered":"http:\/\/stage.web.wsu.edu\/path-team\/?page_id=182"},"modified":"2024-11-09T12:49:34","modified_gmt":"2024-11-09T20:49:34","slug":"potato","status":"publish","type":"page","link":"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/potato\/","title":{"rendered":"Potato"},"content":{"rendered":"<div class=\"wsu-row  wsu-color-background--gray-5 wsu-row--halves\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wsu-cta \" >\n\t<a \t\t\t\t\thref=\"#General\"\t\n\t\tclass=\"wsu-button \">\n\t\t\t\n\t\tGeneral Potato Disease and Pest Management\t\t\t<\/a>\n<\/div>\n\n\n<div class=\"wsu-cta  wsu-cta--width-inline\" >\n\t<a \t\t\t\t\thref=\"#Abiotic\"\t\n\t\tclass=\"wsu-button \">\n\t\t\t\n\t\tAbiotic Problems Common to Potato\t\t\t<\/a>\n<\/div>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wsu-cta  wsu-cta--width-inline\" >\n\t<a \t\t\t\t\thref=\"#Diseases\"\t\n\t\tclass=\"wsu-button \">\n\t\t\t\n\t\tDiseases\t\t\t<\/a>\n<\/div>\n\n\n<div class=\"wsu-cta  wsu-cta--width-inline\" >\n\t<a \t\t\t\t\thref=\"#Nema\"\t\n\t\tclass=\"wsu-button \">\n\t\t\t\n\t\tNematodes\t\t\t<\/a>\n<\/div>\n\n\n<div class=\"wsu-cta  wsu-cta--width-inline\" >\n\t<a \t\t\t\t\thref=\"#InsectMite\"\t\n\t\tclass=\"wsu-button \">\n\t\t\t\n\t\tInsect\/Mite Pests\t\t\t<\/a>\n<\/div>\n\n<\/div>\r\n\n<\/div>\n\n\n<h2 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-centered\" id=\"home\">Diseases<\/h2>\n\n\n<div class=\"wsu-row wsu-row--thirds\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<ul>\n<li><a href=\"#Asteryellows\">Aster yellows<\/a><\/li>\n\n\n\n<li><a href=\"#Bacterialsoftrot\">Bacterial soft rot<\/a><\/li>\n\n\n\n<li><a href=\"#Blackdot\">Black dot<\/a><\/li>\n\n\n\n<li><a href=\"#Blackleg\">Black leg<\/a><\/li>\n\n\n\n<li><a href=\"#Blackscurf\">Black scurf<\/a><\/li>\n\n\n\n<li><a href=\"#Corkyringspot\">Corky ring spot<\/a><\/li>\n\n\n\n<li><a href=\"#Curlytop\">Curly top<\/a><\/li>\n\n\n\n<li><a href=\"#Earlyblight\">Early blight<\/a><\/li>\n\n\n\n<li><a href=\"#Earlydying\">Early dying<\/a><\/li>\n\n\n\n<li><a href=\"#Erwinia\">Erwinia<\/a><\/li>\n<\/ul>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<ul>\n<li><a href=\"#FusariumDryRot\">Fusarium dry rot<\/a><\/li>\n\n\n\n<li><a href=\"#LateBlight\">Late blight<\/a><\/li>\n\n\n\n<li><a href=\"#Leafroll\">Leaf roll<\/a><\/li>\n\n\n\n<li><a href=\"#MopTop\">Mop top<\/a><\/li>\n\n\n\n<li><a href=\"#Pinkeye\">Pink eye<\/a><\/li>\n\n\n\n<li><a href=\"#Pinkrot\">Pink rot<\/a><\/li>\n\n\n\n<li><a href=\"#Powderyscab\">Powdery scab<\/a><\/li>\n\n\n\n<li><a href=\"#PurpleTop\">Purple top<\/a><\/li>\n\n\n\n<li><a href=\"#PVY\">PVY<\/a><\/li>\n\n\n\n<li><a href=\"#Pythium\">Pythium<\/a><\/li>\n<\/ul>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<ul>\n<li><a href=\"#Pythiumleak\">Pythium leak<\/a><\/li>\n\n\n\n<li><a href=\"#Rhizoctonia\">Rhizoctonia stem lesion<\/a><\/li>\n\n\n\n<li><a href=\"#Ringrot\">Ring rot<\/a><\/li>\n\n\n\n<li><a href=\"#Ringrotandsoftrot\">Ring rot and soft rot<\/a><\/li>\n\n\n\n<li><a href=\"#Silverscurf\">Silver scurf<\/a><\/li>\n\n\n\n<li><a href=\"#Skinstainsymptoms\">Skin stain symptoms<\/a><\/li>\n\n\n\n<li><a href=\"#Tomatospottedwilt\">Tomato spotted wilt<\/a><\/li>\n\n\n\n<li><a href=\"#Verticilliumwilt\">Verticillium wilt<\/a><\/li>\n\n\n\n<li><a href=\"#Whitemold\">White mold<\/a><\/li>\n\n\n\n<li><a href=\"#Zebrachip\">Zebra chip<\/a><\/li>\n<\/ul>\n\n<\/div>\r\n\n<\/div>\n\n\n<h2 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-centered\">Nematodes<\/h2>\n\n\n\n<ul>\n<li><a href=\"#Rootknot\">Root knot<\/a><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-centered\">Insect\/Mite Pests<\/h2>\n\n\n<div class=\"wsu-row wsu-row--thirds\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<ul>\n<li><a href=\"#Aphids\">Aphids<\/a><\/li>\n\n\n\n<li><a href=\"#Beetleafhopper\">Beet leafhopper<\/a><\/li>\n\n\n\n<li><a href=\"#Blisterbeetle\">Blister beetle<\/a><\/li>\n\n\n\n<li><a href=\"#Coloradopotatobeetle\">Colorado potato beetle<\/a><\/li>\n<\/ul>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<ul>\n<li><a href=\"#Fleabeetle\">Flea beetle<\/a><\/li>\n\n\n\n<li><a href=\"#Lygusbug\">Lygus bug<\/a><\/li>\n\n\n\n<li><a href=\"#psyllid\">Potato psyllid; psyllid yellows<\/a><\/li>\n\n\n\n<li><a href=\"#Spidermites\">Spider mites<\/a><\/li>\n<\/ul>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<ul>\n<li><a href=\"#Tomatohornworm\">Tomato hornworm<\/a><\/li>\n\n\n\n<li><a href=\"#Tuberworm\">Tuberworm<\/a><\/li>\n\n\n\n<li><a href=\"#thrips\">Western flower thrips<\/a><\/li>\n\n\n\n<li><a href=\"#Wireworm\">Wireworm<\/a><\/li>\n<\/ul>\n\n<\/div>\r\n\n<\/div>\n\n\n<h2 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-centered\">Abiotic Problems Common to Potato<\/h2>\n\n\n<div class=\"wsu-row wsu-row--halves\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<ul>\n<li><a href=\"#herbicide\">2,4-D herbicide drift<\/a><\/li>\n\n\n\n<li><a href=\"#Airpollution\">Air pollution or ozone injury<\/a><\/li>\n\n\n\n<li><a href=\"#Herbicidecarryover\">Herbicide carryover in potato seed<\/a><\/li>\n<\/ul>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<ul>\n<li><a href=\"#Herbicideinjury\">Injury from goal and Buctril herbicides<\/a><\/li>\n\n\n\n<li><a href=\"#Physiological\">Physiological leaf roll<\/a><\/li>\n\n\n\n<li><a href=\"#Toxic\">Toxic seed piece syndrome<\/a><\/li>\n<\/ul>\n\n<\/div>\r\n\n<\/div>\n\n<div class=\"wsu-row wsu-row--single\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<hr class=\"wp-block-separator has-css-opacity\" \/>\n\n\n\n<p class=\"has-text-align-center\">(Click on photo to enlarge)<\/p>\n\n<\/div>\r\n\n<\/div>\n\n\n<h2 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-centered\" id=\"General\">General Potato Disease and Pest Management<\/h2>\n\n\n\n<ul>\n<li><a href=\"https:\/\/www.plantmanagementnetwork.org\/edcenter\/seminars\/potato\/IntegratedManagementofStorageDiseases\/\">Integrated Management of Storage Diseases<\/a>, (Video Presentation), Focus on Potato, Plant Management Network International.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-centered\" id=\"Diseases\">Diseases<\/h2>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Asteryellows\">Aster yellows<\/h3>\n\n\n\n<p class=\"wsu-max-width--hero\"><strong>Disease<\/strong>:&nbsp;Aster yellows<br><strong>Pathogen<\/strong>: Aster yellows phytoplasma<br><strong>Vector<\/strong>: Aster leafhopper (<em>Macrosteles fascifrons<\/em>) and other leafhoppers, and the phytoplasma can be carried in infected tubers<br><strong>Host crops<\/strong>: Over 300 kinds of plants, including a wide variety of vegetables. Broccoli, cabbage, carrot, onion, potato, pumpkin, radish, shallot, spinach, squash, tomato, and more.<\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-aster-yellows-1l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-aster-yellows-1L-396x296.jpg\" alt=\"aster yellows symptoms on potato\" class=\"wp-image-2558\" width=\"198\" height=\"148\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-aster-yellows-1L-396x296.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-aster-yellows-1L.jpg 600w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Potato plant with a seed-borne infection of the aster yellows phytoplasma.<br><strong>\nPhoto Source: <\/strong>Carrie Wohleb, WSU Extension Educator, Grant\/Adams Counties<\/figcaption><\/figure>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a rel=\"noopener\" href=\"https:\/\/pnwhandbooks.org\/plantdisease\/host-disease\/potato-solanum-tuberosum-aster-yellows-late-breaking-virus\" target=\"blank\">Pacific Northwest Plant Disease Management Handbook: Potato (<em>Solanum tuberosum<\/em>) \u2013 Aster Yellows {Late-breaking Virus}<\/a>.<\/li>\n\n\n\n<li><a href=\"https:\/\/pnwhandbooks.org\/plantdisease\/host-disease\/aster-yellows\">Pacific Northwest Plant Disease Management Handbook: Aster \u2013 Yellows<\/a>.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Bacterialsoftrot\">Bacterial soft rot<\/h3>\n\n\n\n<p><strong>Disease<\/strong>:&nbsp;Bacterial soft rot<br><strong>Pathogen<\/strong>:&nbsp;<em>Pectobacterium<\/em><\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/dg119l\/\"><img decoding=\"async\" loading=\"lazy\" width=\"396\" height=\"264\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg119L-396x264.jpg\" alt=\"Bacterial soft rot on potato\" class=\"wp-image-2566\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg119L-396x264.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg119L.jpg 600w\" sizes=\"(max-width: 396px) 100vw, 396px\" \/><\/a><figcaption class=\"wp-element-caption\"><strong>Photo Source: <\/strong>G.Q. Pelter\t<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-bacterial-soft-rot-1l\/\"><img decoding=\"async\" loading=\"lazy\" width=\"396\" height=\"267\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-bacterial-soft-rot-1L-396x267.jpg\" alt=\"typical soft rot symptoms\" class=\"wp-image-2560\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-bacterial-soft-rot-1L-396x267.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-bacterial-soft-rot-1L.jpg 468w\" sizes=\"(max-width: 396px) 100vw, 396px\" \/><\/a><figcaption class=\"wp-element-caption\">Potato tuber with typical soft rot symptoms (Russet potato cultivar).<br><strong>Photo Source: <\/strong>D. Johnson<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-bacterial-soft-rot-2l\/\"><img decoding=\"async\" loading=\"lazy\" width=\"396\" height=\"263\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-bacterial-soft-rot-2L-396x263.jpg\" alt=\"soft rot bacteria on potato seed pieces\" class=\"wp-image-2561\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-bacterial-soft-rot-2L-396x263.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-bacterial-soft-rot-2L.jpg 468w\" sizes=\"(max-width: 396px) 100vw, 396px\" \/><\/a><figcaption class=\"wp-element-caption\">Potato seed pieces with soft rot bacteria oozing from cut surfaces (Russet potato cultivar).<br><strong>Photo Source: <\/strong>D. Johnson<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-bacterial-soft-rot-3l\/\"><img decoding=\"async\" loading=\"lazy\" width=\"468\" height=\"351\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-bacterial-soft-rot-3L.jpg\" alt=\"symptoms of lenticel spot from bacterial infection at the tuver lenticels after washing\" class=\"wp-image-2562\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-bacterial-soft-rot-3L.jpg 468w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-bacterial-soft-rot-3L-396x297.jpg 396w\" sizes=\"(max-width: 468px) 100vw, 468px\" \/><\/a><figcaption class=\"wp-element-caption\">Symptoms of lenticel spot from bacterial infection at the tuber lenticels after washing (Yellow potato cultivar).<br><strong>Photo Source: <\/strong>B. Gundersen<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n<\/div>\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-medium\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-bacterial-soft-rot-4l\/\"><img decoding=\"async\" loading=\"lazy\" width=\"468\" height=\"351\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-bacterial-soft-rot-4L.jpg\" alt=\"showing puffy appearance of lenticels due to bacterial infection and respiration\" class=\"wp-image-2563\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-bacterial-soft-rot-4L.jpg 468w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-bacterial-soft-rot-4L-396x297.jpg 396w\" sizes=\"(max-width: 468px) 100vw, 468px\" \/><\/a><figcaption class=\"wp-element-caption\">Puffy appearance of lenticels due to bacterial infection and respiration.\n(Yellow potato cultivar)<br><strong>Photo Source: <\/strong>B. Gundersen<\/figcaption><\/figure>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-medium\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-bacterial-soft-rot-5l\/\"><img decoding=\"async\" loading=\"lazy\" width=\"396\" height=\"263\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-bacterial-soft-rot-5L-396x263.jpg\" alt=\"hard rot symptoms surrounding tuver lenticels\" class=\"wp-image-2564\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-bacterial-soft-rot-5L-396x263.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-bacterial-soft-rot-5L.jpg 468w\" sizes=\"(max-width: 396px) 100vw, 396px\" \/><\/a><figcaption class=\"wp-element-caption\">Hard rot symptoms surrounding tuber lenticels.\n(Russet potato cultivar)<br><strong>Photo Source: <\/strong>B. Gundersen<\/figcaption><\/figure>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-bacterial-soft-rot-6l\/\"><img decoding=\"async\" loading=\"lazy\" width=\"396\" height=\"264\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-bacterial-soft-rot-6L-396x264.jpg\" alt=\"lenticels on a potatoby excessively wet soil conditions\" class=\"wp-image-2565\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-bacterial-soft-rot-6L-396x264.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-bacterial-soft-rot-6L.jpg 468w\" sizes=\"(max-width: 396px) 100vw, 396px\" \/><\/a><figcaption class=\"wp-element-caption\">Enlarged lenticels on a tuber, resulting from exposure of the tuber to excessively wet soil conditions (Russet potato cultivar).<br><strong>Photo Source: <\/strong>D. Johnson<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/pnwhandbooks.org\/plantdisease\/host-disease\/potato-solanum-tuberosum-bacterial-soft-rot-blackleg-lenticel-rot\">Pacific Northwest Plant Disease Management Handbook: Potato (<em>Solanum tuberosum<\/em>) \u2013 Bacterial Soft Rot and Blackleg and Lenticel Rot<\/a>.<\/li>\n\n\n\n<li><a href=\"https:\/\/pubs.extension.wsu.edu\/bacterial-soft-rot-and-lenticel-spot-on-potato-tubers\">Bacterial Soft Rot and Lenticel Spot on Potato Tubers<\/a>, Washington State University Extension Fact Sheet.<\/li>\n\n\n\n<li><a href=\"https:\/\/hortsense.cahnrs.wsu.edu\/fact-sheet\/potato-bacterial-soft-rot-and-blackleg\/\">Potato: Bacterial soft rot and blackleg<\/a>, Washington State University Hortsense.<\/li>\n\n\n\n<li><a href=\"https:\/\/s3.wp.wsu.edu\/uploads\/sites\/2723\/2021\/08\/PotatoProgressXV12.pdf\">Potato Progress, Volume 15, Number 12, dated September 8, 2015 (pdf)<\/a>. Research &amp; Extension for the Potato Industry of Idaho, Oregon, and Washington. This issue covers the many details of bacterial soft rot diseases of potato and how they should be managed late season and in storage.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Blackdot\">Black dot<\/h3>\n\n\n\n<p><strong>Disease<\/strong>:&nbsp;Black dot<br><strong>Pathogen<\/strong>:&nbsp;<em>Colletotrichum coccodes<\/em><\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/dg130l\/\"><img decoding=\"async\" loading=\"lazy\" width=\"396\" height=\"264\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg130L-396x264.jpg\" alt=\"Black dod on potato\" class=\"wp-image-2568\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg130L-396x264.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg130L.jpg 600w\" sizes=\"(max-width: 396px) 100vw, 396px\" \/><\/a><figcaption class=\"wp-element-caption\"><strong>Photo Source: <\/strong>G.Q. Pelter<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/pnwhandbooks.org\/plantdisease\/host-disease\/potato-solanum-tuberosum-black-dot\">Pacific Northwest Plant Disease Management Handbook: Potato (<em>Solanum tuberosum<\/em>) \u2013 Black Dot<\/a>.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Blackleg\">Black leg<\/h3>\n\n\n\n<p><strong>Disease<\/strong>:&nbsp;Black leg<br><strong>Pathogen<\/strong>:&nbsp;<em>Erwinia&nbsp;species<\/em><\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/dg136l\/\"><img decoding=\"async\" loading=\"lazy\" width=\"396\" height=\"264\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg136L-396x264.jpg\" alt=\"Black leg on potato 'Norgold'\" class=\"wp-image-2571\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg136L-396x264.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg136L.jpg 600w\" sizes=\"(max-width: 396px) 100vw, 396px\" \/><\/a><figcaption class=\"wp-element-caption\">Potato \u2018Norgold\u2019.<br><strong>Photo Source: <\/strong>G.Q. Pelter<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/dg133l\/\"><img decoding=\"async\" loading=\"lazy\" width=\"396\" height=\"264\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg133L-396x264.jpg\" alt=\"Black leg (mid-season symptoms) on potato 'Ranger Russet'\" class=\"wp-image-2570\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg133L-396x264.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg133L.jpg 600w\" sizes=\"(max-width: 396px) 100vw, 396px\" \/><\/a><figcaption class=\"wp-element-caption\">Potato \u2018Ranger Russet\u2019 (mid season symptoms).<br><strong>Photo Source: <\/strong>G.Q. Pelter<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-medium\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/dg118l\/\"><img decoding=\"async\" loading=\"lazy\" width=\"396\" height=\"264\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg118L-396x264.jpg\" alt=\"Black leg\" class=\"wp-image-2569\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg118L-396x264.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg118L.jpg 600w\" sizes=\"(max-width: 396px) 100vw, 396px\" \/><\/a><figcaption class=\"wp-element-caption\">Potato \u2018Norkotah\u2019\nHail damage 3 days post hail storm as comparison.<br><strong>Photo Source: <\/strong>G.Q. Pelter<\/figcaption><\/figure>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/www.plantmanagementnetwork.org\/edcenter\/seminars\/Potato\/Dickeya\/\">\u2018Focus on Potato\u2019 Webcast Helps Users Minimize Spread of Blackleg<\/a>.<\/li>\n\n\n\n<li>Blackleg, caused by strains of soft rot bacteria known as Dickeya, has traditionally had little impact on North American potato production, but it now appears to be on the move throughout Europe and could threaten growers in the United States.<\/li>\n\n\n\n<li>The Plant Management Network (PMN) has released a presentation entitled \u201cDickeya: A Scottish, UK and European Perspective\u201d to provide growers and consultants an overview of the history of the disease in Europe, and an introduction to Dickeya solani, a new aggressive pathogen strain contributing to an increase in the incidence and spread of blackleg. The webcast was developed by Gerry Saddler, Deputy Head of Science &amp; Advice Scottish Agriculture with the Scottish Government, and details that country\u2019s potato production practices and explains why they have adopted a national zero-tolerance approach to the presence of Dickeya strains. The presentation discusses:<\/li>\n<\/ul>\n\n\n\n<ol>\n<li>&nbsp;Causes of blackleg and symptoms exhibited by different strains.<\/li>\n\n\n\n<li>Conditions that encourage infection and common transmission methods.<\/li>\n\n\n\n<li>&nbsp;Inspection and testing practices employed in Scotland.<\/li>\n\n\n\n<li>&nbsp;Effective control measures to limit spread.<\/li>\n<\/ol>\n\n\n\n<ul>\n<li>The 40-minute presentation will remain open access through July 31 in the&nbsp;<a href=\"https:\/\/www.plantmanagementnetwork.org\/fop\">Focus on Potato webcast<\/a>&nbsp;resource. The Plant Management Network is a nonprofit publisher of applied, science-based resources that help enhance the health, management, and production of agricultural and horticultural crops. Partnering with over 80 universities, nonprofits, and agribusinesses, PMN provides materials covering a wide range of crops and contemporary issues through the&nbsp;<a href=\"https:\/\/www.plantmanagementnetwork.org\/update\/current\/\">online PMN Education Center<\/a>.<\/li>\n\n\n\n<li><a href=\"https:\/\/pnwhandbooks.org\/plantdisease\/host-disease\/potato-solanum-tuberosum-bacterial-soft-rot-blackleg-lenticel-rot\">Pacific Northwest Plant Disease Management Handbook: Potato (<em>Solanum tuberosum<\/em>) \u2013 Bacterial Soft Rot and Blackleg and Lenticel Rot<\/a>.<\/li>\n\n\n\n<li><a href=\"https:\/\/hortsense.cahnrs.wsu.edu\/fact-sheet\/potato-bacterial-soft-rot-and-blackleg\/\">Potato: Bacterial soft rot and blackleg<\/a>, Washington State University Hortsense.<\/li>\n\n\n\n<li><a href=\"https:\/\/s3.wp.wsu.edu\/uploads\/sites\/2723\/2021\/08\/PotatoProgressXV12.pdf\">Potato Progress, Volume 15, Number 12, dated September 8, 2015 (pdf)<\/a>. Research &amp; Extension for the Potato Industry of Idaho, Oregon, and Washington. This issue covers the many details of bacterial soft rot diseases of potato and how they should be managed late season and in storage.<\/li>\n\n\n\n<li><a href=\"https:\/\/www.plantmanagementnetwork.org\/edcenter\/seminars\/Potato\/SoftRot\/\">Soft Rot and Blackleg Diseases of Potato<\/a>, Plant Management Network International.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Blackscurf\">Black scurf<\/h3>\n\n\n\n<p><strong>Disease<\/strong>:&nbsp;Black scurf<br><strong>Pathogen<\/strong>:&nbsp;<em>Rhizoctonia solani<\/em><\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/dg25l\/\"><img decoding=\"async\" loading=\"lazy\" width=\"396\" height=\"264\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg25L-396x264.jpg\" alt=\"Black scurf on potato\" class=\"wp-image-2573\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg25L-396x264.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg25L.jpg 600w\" sizes=\"(max-width: 396px) 100vw, 396px\" \/><\/a><figcaption class=\"wp-element-caption\"><strong>Photo Source: <\/strong>D.A. Inglis<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/pnwhandbooks.org\/plantdisease\/host-disease\/potato-solanum-tuberosum-rhizoctonia-canker-black-scurf\">Pacific Northwest Plant Disease Management Handbook: Potato (Solanum tuberosum) \u2013 Rhizoctonia Canker {Black Scurf}<\/a>.<\/li>\n\n\n\n<li><a href=\"https:\/\/hortsense.cahnrs.wsu.edu\/fact-sheet\/potato-rhizoctonia-canker-black-scurf\/\">Potato: Rhizoctonia canker (Black scurf)<\/a>, Washington State University.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Corkyringspot\">Corky ring spot<\/h3>\n\n\n\n<p><strong>Disease<\/strong>:&nbsp;Corky ring spot<br><strong>Pathogen<\/strong>:&nbsp;<em>Tobacco rattle virus<\/em>, transmitted by soilborne nematodes,&nbsp;<em>Trichodorus&nbsp;spp.<\/em> and&nbsp;<em>Paratrichodorus&nbsp;spp.<\/em><\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/dg134l\/\"><img decoding=\"async\" loading=\"lazy\" width=\"396\" height=\"264\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg134L-396x264.jpg\" alt=\"Corky ring spot on potato 'Russet Burbank'\" class=\"wp-image-2574\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg134L-396x264.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg134L.jpg 600w\" sizes=\"(max-width: 396px) 100vw, 396px\" \/><\/a><figcaption class=\"wp-element-caption\"><strong>Photo Source: <\/strong>G.Q. Pelter\t<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-trv-1l\/\"><img decoding=\"async\" loading=\"lazy\" width=\"750\" height=\"563\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-trv-1L.jpg\" alt=\"Corky ring spot on potato leaves\" class=\"wp-image-2575\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-trv-1L.jpg 750w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-trv-1L-396x297.jpg 396w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><\/a><figcaption class=\"wp-element-caption\">Leaves of the potato cultivar Russet Norkotah with symptoms caused by <i>Tobacco rattle virus.<\/i><br><strong>Photo Source: <\/strong>Phil Hamm, OSU Hermiston IAREC<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-trv-2l\/\"><img decoding=\"async\" loading=\"lazy\" width=\"750\" height=\"563\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-trv-2L.jpg\" alt=\"Corky ring spot on potato leaf\" class=\"wp-image-2576\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-trv-2L.jpg 750w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-trv-2L-396x297.jpg 396w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><\/a><figcaption class=\"wp-element-caption\">Foliage of the potato cultivar Shepody with symptoms caused by <i>Tobacco rattle virus<\/i>.<br><strong>Photo Source: <\/strong>Phil Hamm, OSU Hermiston IAREC<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-trv-3l\/\"><img decoding=\"async\" loading=\"lazy\" width=\"750\" height=\"563\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-trv-3L.jpg\" alt=\"potato plants associated with feeding damage\" class=\"wp-image-2577\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-trv-3L.jpg 750w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-trv-3L-396x297.jpg 396w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><\/a><figcaption class=\"wp-element-caption\">Poor emergence of plants in a potato crop associated with feeding damage by trichodorid nematodes vectoring <i>Tobacco rattle virus<\/i>.<br><strong>Photo Source: <\/strong>Phil Hamm, OSU Hermiston IAREC<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n<\/div>\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-medium\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-trv-5l\/\"><img decoding=\"async\" loading=\"lazy\" width=\"396\" height=\"283\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-trv-5L-396x283.jpg\" alt=\"Corky ring spot on potato\" class=\"wp-image-2578\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-trv-5L-396x283.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-trv-5L.jpg 750w\" sizes=\"(max-width: 396px) 100vw, 396px\" \/><\/a><figcaption class=\"wp-element-caption\">Internal tuber symptoms of corky ringspot.<br><strong>\nPhoto Source: <\/strong>Jordan Eggers, Oregon State University<\/figcaption><\/figure>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-medium wsu-spacing-before--xxmedium\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-trv-6l\/\"><img decoding=\"async\" loading=\"lazy\" width=\"396\" height=\"204\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-trv-6L-396x204.jpg\" alt=\"Corky ring spot on potato 'Russet Burbank'\" class=\"wp-image-2579\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-trv-6L-396x204.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-trv-6L.jpg 750w\" sizes=\"(max-width: 396px) 100vw, 396px\" \/><\/a><figcaption class=\"wp-element-caption\">Internal tuber symptoms of corky ringspot.<br><strong>\nPhoto Source: <\/strong>Jordan Eggers, Oregon State University<\/figcaption><\/figure>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/pnwhandbooks.org\/plantdisease\/host-disease\/potato-solanum-tuberosum-corky-ringspot\">Pacific Northwest Plant Disease Management Handbook: Potato (Solanum tuberosum) \u2013 Corky Ringspot<\/a>.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Curlytop\">Curly top<\/h3>\n\n\n\n<p class=\"wsu-max-width--hero\"><strong>Disease<\/strong>:&nbsp;Curly top<br><strong>Pathogen<\/strong>:&nbsp;<em>Beet curly top virus<\/em>&nbsp;(BCTV), vectored by the beet leafhopper&nbsp;<em>Circulifer tenellus.<\/em><br><strong>Host crops<\/strong>: Numerous plant species including many vegetables such as&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/bean\/#CurlyTop\">bean<\/a>, beet, carrot,<br>&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/eggplant\/#Curlytop\">eggplant<\/a>,&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/coriander-cilantro\/#Curlytop\">coriander<\/a>, pepper, <a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/tomato\/#Curlytop\">tomato<\/a>, various cucurbits such as&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/cucurbits\/squash\/#Curlytop\">squash<\/a>,&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/cucurbits\/cucumber\/#Curly\">cucumber<\/a>,&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/cucurbits\/pumpkin\/#Curlytop\">pumpkin<\/a>,&nbsp;and <br><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/cucurbits\/watermelon\/#Curlytop\">watermelon<\/a>, etc.<\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/tomato-curly-top-1l\/\"><img decoding=\"async\" loading=\"lazy\" width=\"396\" height=\"264\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/Tomato-Curly-top-1L-396x264.jpg\" alt=\"curly top on tomato-1\" class=\"wp-image-2867\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/Tomato-Curly-top-1L-396x264.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/Tomato-Curly-top-1L.jpg 600w\" sizes=\"(max-width: 396px) 100vw, 396px\" \/><\/a><figcaption class=\"wp-element-caption\"><strong>Photo Source: <\/strong>E. J. Sorensen<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/tomato-beet-curly-top-virus-1l\/\"><img decoding=\"async\" loading=\"lazy\" width=\"396\" height=\"286\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/tomato-beet-curly-top-virus-1L-396x286.jpg\" alt=\"tomato plants showing symptoms of beet curly top virus-1\" class=\"wp-image-1475\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/tomato-beet-curly-top-virus-1L-396x286.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/tomato-beet-curly-top-virus-1L.jpg 650w\" sizes=\"(max-width: 396px) 100vw, 396px\" \/><\/a><figcaption class=\"wp-element-caption\">Symptoms of curly top on tomato leaves.<br><strong>Photo Source: <\/strong>Phil Hamm, Oregon State University<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/tomato-beet-curly-top-virus-2l-2\/\"><img decoding=\"async\" loading=\"lazy\" width=\"450\" height=\"338\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/tomato-beet-curly-top-virus-2L-1.jpg\" alt=\"symptoms of beet curly top virus on tomato plants\" class=\"wp-image-2582\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/tomato-beet-curly-top-virus-2L-1.jpg 450w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/tomato-beet-curly-top-virus-2L-1-396x297.jpg 396w\" sizes=\"(max-width: 450px) 100vw, 450px\" \/><\/a><figcaption class=\"wp-element-caption\">Symptoms of curly top on tomato leaves.<br><strong>Photo Source: <\/strong>Phil Hamm, Oregon State University<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/tomato-beet-curly-top-virus-3l\/\"><img decoding=\"async\" loading=\"lazy\" width=\"396\" height=\"273\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/tomato-beet-curly-top-virus-3L-396x273.jpg\" alt=\"tomato plants showing symptoms of beet curly top virus-3\" class=\"wp-image-1477\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/tomato-beet-curly-top-virus-3L-396x273.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/tomato-beet-curly-top-virus-3L.jpg 700w\" sizes=\"(max-width: 396px) 100vw, 396px\" \/><\/a><figcaption class=\"wp-element-caption\">Symptoms of curly top on tomato leaves.<br><strong>Photo Source: <\/strong>Phil Hamm, Oregon State University<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n<\/div>\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-medium\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/tomato-beet-curly-top-virus-4l-2\/\"><img decoding=\"async\" loading=\"lazy\" width=\"396\" height=\"264\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/tomato-beet-curly-top-virus-4L-1-396x264.jpg\" alt=\"symptoms of beet curly top-2\" class=\"wp-image-2584\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/tomato-beet-curly-top-virus-4L-1-396x264.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/tomato-beet-curly-top-virus-4L-1.jpg 550w\" sizes=\"(max-width: 396px) 100vw, 396px\" \/><\/a><figcaption class=\"wp-element-caption\">Symptoms of curly top on tomato leaves.<br><strong>\nPhoto Source: <\/strong>Krishna Mohan, University of Idaho<\/figcaption><\/figure>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-medium\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/tomato-beet-curly-top-virus-5l-2\/\"><img decoding=\"async\" loading=\"lazy\" width=\"396\" height=\"265\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/tomato-beet-curly-top-virus-5L-1-396x265.jpg\" alt=\"symptoms of beet curly top-3\" class=\"wp-image-2585\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/tomato-beet-curly-top-virus-5L-1-396x265.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/tomato-beet-curly-top-virus-5L-1.jpg 600w\" sizes=\"(max-width: 396px) 100vw, 396px\" \/><\/a><figcaption class=\"wp-element-caption\">Symptoms of curly top on tomato leaves.<br><strong>\nPhoto Source: <\/strong>Krishna Mohan, University of Idaho<\/figcaption><\/figure>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/pnwhandbooks.org\/plantdisease\/host-disease\/potato-solanum-tuberosum-green-dwarf-curly-top\">Pacific Northwest Plant Disease Management Handbook: Potato (Solanum tuberosum) \u2013 Green Dwarf {Curly Top}<\/a>.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Earlyblight\">Early blight<\/h3>\n\n\n\n<p><strong>Disease<\/strong>:&nbsp;Early blight<br><strong>Pathogen<\/strong>:&nbsp;<em>Alternaria solani<\/em><\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/dg129l\/\"><img decoding=\"async\" loading=\"lazy\" width=\"396\" height=\"264\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg129L-396x264.jpg\" alt=\"Early blight lesion on a potato tuber\" class=\"wp-image-2588\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg129L-396x264.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg129L.jpg 600w\" sizes=\"(max-width: 396px) 100vw, 396px\" \/><\/a><figcaption class=\"wp-element-caption\">Early blight lesion on tuber.<br><strong>Photo Source: <\/strong>G.Q. Pelter<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-early-blight-2l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-early-blight-2L-396x380.jpg\" alt=\"Early blight lesion on a potato leaf\" class=\"wp-image-2589\" width=\"198\" height=\"190\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-early-blight-2L-396x380.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-early-blight-2L.jpg 403w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Early blight lesion on leaf.<br><strong>Photo Source: <\/strong>The American Phytopathological Society<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/pnwhandbooks.org\/plantdisease\/host-disease\/potato-solanum-tuberosum-early-blight\">Pacific Northwest Plant Disease Management Handbook: Potato (Solanum tuberosum) \u2013 Early Blight<\/a>.<\/li>\n\n\n\n<li><a href=\"https:\/\/www.plantmanagementnetwork.org\/edcenter\/seminars\/potato\/EarlyBlight\/\">Early Blight: A Global Management Issue on Potatoes<\/a>&nbsp;(Video Presentation), Focus on Potato, Plant Management Network International.<\/li>\n\n\n\n<li>Focus on Potato&nbsp;webcast: \u201c<a href=\"https:\/\/www.plantmanagementnetwork.org\/edcenter\/seminars\/potato\/AlternariaPopulations\/\">Best Management Tactics and Fungicide Resistance in Early Blight and Brown Spot<\/a>\u201d by Dr. Lydia Tymon, plant pathologist&nbsp;at Washington State University.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Earlydying\">Early dying<\/h3>\n\n\n\n<p><strong>Disease<\/strong>:&nbsp;Early dying<br><strong>Pathogen<\/strong>:&nbsp;<em>Meloidogyne&nbsp;<\/em>and<em>&nbsp;Verticillium<\/em><\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium\"><img decoding=\"async\" loading=\"lazy\" width=\"396\" height=\"264\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg125L-396x264.jpg\" alt=\"Early dying on potato\" class=\"wp-image-2590\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg125L-396x264.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg125L.jpg 600w\" sizes=\"(max-width: 396px) 100vw, 396px\" \/><figcaption class=\"wp-element-caption\"><strong>Photo Source: <\/strong>G.Q. Pelter<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/pnwhandbooks.org\/plantdisease\/host-disease\/potato-solanum-tuberosum-verticillium-wilt-potato-early-dying\">Pacific Northwest Plant Disease Management Handbook: Potato (Solanum tuberosum) \u2013 Verticillium Wilt {Potato Early Dying}<\/a>.<\/li>\n\n\n\n<li><a href=\"https:\/\/hortsense.cahnrs.wsu.edu\/fact-sheet\/potato-verticillium-wilt-potato-early-dying\/\">Potato: Verticillium Wilt (Potato early dying)<\/a>, Washington State University Hortsense.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Erwinia\">Erwinia<\/h3>\n\n\n\n<p><strong>Disease<\/strong>:&nbsp;Erwinia<br><strong>Pathogen<\/strong>:&nbsp;<em>Erwinia<\/em><\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-medium\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/dg127l\/\"><img decoding=\"async\" loading=\"lazy\" width=\"396\" height=\"264\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg127L-396x264.jpg\" alt=\"early stem symptoms of Erwinia on potato\" class=\"wp-image-2592\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg127L-396x264.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg127L.jpg 600w\" sizes=\"(max-width: 396px) 100vw, 396px\" \/><\/a><figcaption class=\"wp-element-caption\">Potato \u2018Ranger Russet\u2019 (early stem symptoms).<br><strong>\nPhoto Source: <\/strong>G.Q. Pelter<\/figcaption><\/figure>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n<\/div>\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"FusariumDryRot\">Fusarium dry rot<\/h3>\n\n\n\n<p><strong>Disease<\/strong>:&nbsp;Fusarium Dry Rot<br><strong>Pathogen<\/strong>:&nbsp;<em>Fusarium&nbsp;spp.<\/em><\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-full is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/fusarium-tuber-dry-rot-2-inglisl\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/Fusarium-tuber-dry-rot-2-InglisL.jpg\" alt=\"Fusarium dry rot on potato\" class=\"wp-image-2593\" width=\"169\" height=\"250\" \/><\/a><figcaption class=\"wp-element-caption\"><strong>Photo Source: <\/strong>D. A. Inglis and B. Gundersen<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/fusarium-tuber-dry-rot-inglisl\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/Fusarium-tuber-dry-rot-InglisL-396x341.jpg\" alt=\"Fusarium dry rot on potatoes\" class=\"wp-image-2594\" width=\"198\" height=\"171\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/Fusarium-tuber-dry-rot-InglisL-396x341.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/Fusarium-tuber-dry-rot-InglisL.jpg 752w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\"><strong>Photo Source: <\/strong>D. A. Inglis and B. Gundersen<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/pnwhandbooks.org\/plantdisease\/host-disease\/potato-solanum-tuberosum-fusarium-dry-rot\">Pacific Northwest Plant Disease Management Handbook: Potato (Solanum tuberosum) \u2013 Fusarium Dry Rot<\/a>.<\/li>\n\n\n\n<li><a href=\"https:\/\/www.plantmanagementnetwork.org\/edcenter\/seminars\/Potato\/FusariumDryRotOfPotatoes\/\">Fusarium Dry Rot of Potatoes<\/a>, Plant Management Network International.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"LateBlight\">Late blight<\/h3>\n\n\n\n<p><strong>Disease<\/strong>:&nbsp;Late Blight<br><strong>Pathogen<\/strong>:&nbsp;<em>Phytophthora infestans<\/em><\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-full is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/stem-sporulationl\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/stem-sporulationL.jpg\" alt=\"late blight stem sporulation on potato\" class=\"wp-image-2596\" width=\"200\" height=\"300\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/stem-sporulationL.jpg 400w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/stem-sporulationL-396x594.jpg 396w\" sizes=\"(max-width: 200px) 100vw, 200px\" \/><\/a><figcaption class=\"wp-element-caption\"><strong>Photo Source: <\/strong>D.A. Inglis and J. Gigot\n<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image alignleft size-full is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/tuber-blightl\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/tuber-blightL.jpg\" alt=\"late blight of potato tuber\" class=\"wp-image-2600\" width=\"225\" height=\"150\" \/><\/a><figcaption class=\"wp-element-caption\"><strong>Photo Source: <\/strong>D.A. Inglis and J. Gigot\n<\/figcaption><\/figure>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-full is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/lenticel-sporulationl\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/Lenticel-sporulationL.jpg\" alt=\"late blight lenticel sporulation on potato\" class=\"wp-image-2597\" width=\"200\" height=\"300\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/Lenticel-sporulationL.jpg 400w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/Lenticel-sporulationL-396x594.jpg 396w\" sizes=\"(max-width: 200px) 100vw, 200px\" \/><\/a><figcaption class=\"wp-element-caption\"><strong>Photo Source: <\/strong>D.A. Inglis and J. Gigot\n<\/figcaption><\/figure>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-medium is-resized wsu-spacing-before--none\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/seed-pc-transmissionl\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/Seed-pc-transmissionL-396x401.jpg\" alt=\"late blight seed pc transmission\" class=\"wp-image-2598\" width=\"198\" height=\"201\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/Seed-pc-transmissionL-396x401.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/Seed-pc-transmissionL.jpg 554w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\"><strong>Photo Source: <\/strong>D.A. Inglis and J. Gigot\n<\/figcaption><\/figure>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-medium is-resized wsu-spacing-before--none\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/lesiononfoliagel\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/LesionOnFoliageL.jpg\" alt=\"late blight lesion on foliage\" class=\"wp-image-2599\" width=\"320\" height=\"240\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/LesionOnFoliageL.jpg 640w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/LesionOnFoliageL-396x297.jpg 396w\" sizes=\"(max-width: 320px) 100vw, 320px\" \/><\/a><figcaption class=\"wp-element-caption\"><strong>Photo Source: <\/strong>D.A. Inglis and J. Gigot\n<\/figcaption><\/figure>\n\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/pnwhandbooks.org\/plantdisease\/host-disease\/potato-solanum-tuberosum-late-blight\">Pacific Northwest Plant Disease Management Handbook: Potato (Solanum tuberosum) \u2013 Late Blight<\/a>.<\/li>\n\n\n\n<li><a href=\"https:\/\/eorganic.org\/node\/3340\">Organic Management of Late Blight of Potato and Tomato (Phytophthora infestans)<\/a>, eXtension.<\/li>\n\n\n\n<li><a href=\"https:\/\/www.plantmanagementnetwork.org\/edcenter\/seminars\/potato\/PotatoLateBlight\/\">Potato Late Blight<\/a>, Plant Management Network International. (video).<\/li>\n\n\n\n<li>A potato late blight forecasting model for the Columbia Basin can be accessed via the WSU <a href=\"https:\/\/weather.wsu.edu\/\" data-type=\"URL\" data-id=\"https:\/\/weather.wsu.edu\/\">AgWeatherNet website<\/a>. Subscription to AgWeatherNet is free of charge.<\/li>\n\n\n\n<li><a href=\"https:\/\/www.ars.usda.gov\/is\/pr\/2010\/100603.htm\">ARS Scientists Seek Blight-Resistant Spuds<\/a>, USDA Agricultural Research Service.<\/li>\n\n\n\n<li><a href=\"https:\/\/s3.wp.wsu.edu\/uploads\/sites\/2723\/2021\/08\/MSU-late-blight-Ext-Bulletin-E-2945.pdf\">Potato Diseases: Late Blight (pdf)<\/a>, Extension Bulletin E-2945, Michigan State University.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Leafroll\">Leaf roll<\/h3>\n\n\n\n<p><strong>Disease<\/strong>:&nbsp;Leaf roll&nbsp;(net necrosis symptoms on potato tubers)<br><strong>Pathogen<\/strong>:&nbsp;<em>Potato leaf roll virus<\/em><\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg128L-396x264.jpg\" alt=\"leaf roll primary symptoms-1\" class=\"wp-image-2601\" width=\"198\" height=\"132\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg128L-396x264.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg128L.jpg 600w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><figcaption class=\"wp-element-caption\">Primary symptoms.<br><strong>Photo Source: <\/strong>G.Q. Pelter<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/dg132l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg132L-396x264.jpg\" alt=\"net necrosis (leaf roll-2)\" class=\"wp-image-2602\" width=\"198\" height=\"132\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg132L-396x264.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg132L.jpg 600w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Net necrosis.<br><strong>Photo Source: <\/strong>G.Q. Pelter<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-leaf-roll-3L-396x319.jpg\" alt=\"net necrosis(leaf roll-3)\" class=\"wp-image-2603\" width=\"198\" height=\"160\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-leaf-roll-3L-396x319.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-leaf-roll-3L.jpg 682w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><figcaption class=\"wp-element-caption\">Net necrosis caused by PLRV in steam-peeled tubers of the cultivar Russet Burbank.<br><strong>Photo Source: <\/strong>Jordan Eggers, Oregon State University<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-leaf-roll-4L-396x445.jpg\" alt=\"net necrosis(leaf roll-4)\" class=\"wp-image-2604\" width=\"198\" height=\"223\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-leaf-roll-4L-396x445.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-leaf-roll-4L.jpg 489w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><figcaption class=\"wp-element-caption\">Net necrosis caused by PLRV in steam-peeled tubers of the cultivar Russet Burbank.<br><strong>Photo Source: <\/strong>Jordan Eggers, Oregon State University<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/pnwhandbooks.org\/plantdisease\/host-disease\/potato-solanum-tuberosum-potato-leafroll-virus-leaf-roll\">Pacific Northwest Plant Disease Management Handbook: Potato (Solanum tuberosum) \u2013 Potato Leafroll Virus {Leaf Roll}<\/a>.<\/li>\n\n\n\n<li><a href=\"https:\/\/hortsense.cahnrs.wsu.edu\/fact-sheet\/potato-potato-leafroll-mosaic-leafroll\/\">Potato: Potato leafroll mosaic (Leafroll)<\/a>, Washington State University Hortsense.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"MopTop\">Mop top<\/h3>\n\n\n\n<p class=\"wsu-max-width--hero\"><strong>Disease<\/strong>:&nbsp;Mop Top<br><strong>Pathogen<\/strong>:&nbsp;Potato mop-top virus&nbsp;(PMTV), a pomovirus vectored by the soilborne organism,&nbsp;<em>Spongospora subterrenea<\/em>. The latter also causes powdery scab (see Powdery scab below).<\/p>\n\n\n<div class=\"wsu-row wsu-row--thirds\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-mop-top-virus-1l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-mop-top-virus-1L-396x358.jpg\" alt=\"potato-mop-top\" class=\"wp-image-2605\" width=\"198\" height=\"179\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-mop-top-virus-1L-396x358.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-mop-top-virus-1L.jpg 608w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Symptoms of Potato mop top virus infection of tubers of various potato cultivars.<br><strong>\nPhoto Source: <\/strong>Jordan Eggers<\/figcaption><\/figure>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-mop-top-virus-2l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-mop-top-virus-2L-396x339.jpg\" alt=\"infected potato\" class=\"wp-image-2606\" width=\"198\" height=\"170\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-mop-top-virus-2L-396x339.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-mop-top-virus-2L.jpg 643w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Symptoms of Potato mop top virus infection of tubers of various potato cultivars.<br><strong>\nPhoto Source: <\/strong>Jordan Eggers<\/figcaption><\/figure>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-mop-top-virus-3l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-mop-top-virus-3L-396x366.jpg\" alt=\"mop top virus infection on potato\" class=\"wp-image-2607\" width=\"198\" height=\"183\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-mop-top-virus-3L-396x366.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-mop-top-virus-3L.jpg 595w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Symptoms of Potato mop top virus infection of tubers of various potato cultivars.<br><strong>\nPhoto Source: <\/strong>Jordan Eggers<\/figcaption><\/figure>\n\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/pnwhandbooks.org\/plantdisease\/potato-solanum-tuberosum-potato-mop-top-virus\">Pacific Northwest Plant Disease Management Handbook: Potato (Solanum tuberosum) \u2013 Potato Mop-Top Virus<\/a>.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Pinkeye\">Pink eye of potato<\/h3>\n\n\n\n<p class=\"wsu-max-width--hero\"><strong>Common Name<\/strong>:&nbsp;Pink eye of potato<br><strong>Latin binomial<\/strong>: Unknown causal agent, occasionally observed in white- and russet-skinned cultivars, but not red-skinned cultivars. The disease has been associated with some bacteria, and is reported to be more severe in cultivars susceptible to Verticillium wilt.<\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-pink-eye-1l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-pink-eye-1L-396x274.jpg\" alt=\"possible pink eye of potato\" class=\"wp-image-2609\" width=\"198\" height=\"137\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-pink-eye-1L-396x274.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-pink-eye-1L.jpg 750w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Suspected symptoms of pink eye of potato.<br><strong>Photo Source: <\/strong>Karen Ward, Washington State University Plant Diagnostician<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-pink-eye-2l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-pink-eye-2L-396x265.jpg\" alt=\"symptoms of pink eye on potato-1\" class=\"wp-image-2610\" width=\"198\" height=\"133\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-pink-eye-2L-396x265.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-pink-eye-2L.jpg 750w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Symptoms of pink eye of potato tubers.<br><strong>Photo Source: <\/strong>Jordan Egger, Oregon State University<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-pink-eye-3l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-pink-eye-3L-396x265.jpg\" alt=\"symptoms of pink eye on potato-2\" class=\"wp-image-2611\" width=\"198\" height=\"133\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-pink-eye-3L-396x265.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-pink-eye-3L.jpg 750w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Symptoms of pink eye of potato tubers.<br><strong>Photo Source: <\/strong>Jordan Egger, Oregon State University<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-pink-eye-4l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-pink-eye-4L-396x264.jpg\" alt=\"symptoms of pink eye on potato-3\" class=\"wp-image-2612\" width=\"198\" height=\"132\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-pink-eye-4L-396x264.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-pink-eye-4L.jpg 750w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Symptoms of pink eye of potato tubers.<br><strong>Photo Source: <\/strong>Jordan Egger, Oregon State University<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n<\/div>\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-pink-eye-5l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-pink-eye-5L-396x265.jpg\" alt=\"symptoms of pink eye on potato-4\" class=\"wp-image-2613\" width=\"198\" height=\"133\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-pink-eye-5L-396x265.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-pink-eye-5L.jpg 750w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Symptoms of pink eye of potato tubers.<br><strong>Photo Source: <\/strong>Jordan Egger, Oregon State University<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-pink-eye-6l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-pink-eye-6L-396x265.jpg\" alt=\"symptoms of pink eye on potato-5\" class=\"wp-image-2614\" width=\"198\" height=\"133\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-pink-eye-6L-396x265.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-pink-eye-6L.jpg 750w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Symptoms of pink eye of potato tubers.<br><strong>Photo Source: <\/strong>Jordan Egger, Oregon State University<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-pink-eye-7l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-pink-eye-7L-396x271.jpg\" alt=\"symptoms of pink eye on potato-6\" class=\"wp-image-2615\" width=\"198\" height=\"136\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-pink-eye-7L-396x271.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-pink-eye-7L.jpg 750w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">A potato tuber illuminated with ultraviolet light, glowing as a result of pink eye.<br><strong>Photo Source: <\/strong>Jordan Egger, Oregon State University<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"http:\/\/vegetablemdonline.ppath.cornell.edu\/NewsArticles\/Pinkeye%20of%20Potato%20in%202011.pdf\">Potato \u2013 Pink Eye or Brown Eye (pdf)<\/a>, Vegetable MD Online, Cornell University.<\/li>\n\n\n\n<li>Pink Eye of Potato, Prince Edward Island Department of Agriculture and Forestry, Canada.<\/li>\n\n\n\n<li>Relationship of Verticillium Wilt with Pink-Eye of Potato in Maine, USDA National Agricultural Library\u2019s Digital Collections.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Pinkrot\">Pink rot<\/h3>\n\n\n\n<p><strong>Disease<\/strong>:&nbsp;Pink rot<br><strong>Pathogen<\/strong>:&nbsp;<em>Phytophthora erythroseptica<\/em><\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/dg137l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg137L-396x264.jpg\" alt=\"Pink rot on potato 'Russet Burbank\" class=\"wp-image-2619\" width=\"198\" height=\"132\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg137L-396x264.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg137L.jpg 600w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\"><strong>Photo Source: <\/strong>G.Q. Pelter<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-pink-rot-2l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-pink-rot-2L-396x220.jpg\" alt=\"pink rot of potato\" class=\"wp-image-2616\" width=\"198\" height=\"110\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-pink-rot-2L-396x220.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-pink-rot-2L.jpg 750w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\"><strong>Photo Source: <\/strong>Jordan Eggers, Oregon State University<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-pink-rot-3l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-pink-rot-3L-396x276.jpg\" alt=\"pink rot symptoms on potato-1\" class=\"wp-image-2617\" width=\"198\" height=\"138\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-pink-rot-3L-396x276.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-pink-rot-3L.jpg 750w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\"><strong>Photo Source: <\/strong>Jordan Eggers, Oregon State University<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-pink-rot-4l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-pink-rot-4L-396x242.jpg\" alt=\"pink rot symptoms on potato-2\" class=\"wp-image-2618\" width=\"198\" height=\"121\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-pink-rot-4L-396x242.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-pink-rot-4L.jpg 750w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\"><strong>Photo Source: <\/strong>Jordan Eggers, Oregon State University<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/pnwhandbooks.org\/plantdisease\/host-disease\/potato-solanum-tuberosum-pink-rot\">Pacific Northwest Plant Disease Management Handbook: Potato (Solanum tuberosum) \u2013 Pink Rot<\/a>.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Powderyscab\">Powdery scab<\/h3>\n\n\n\n<p><strong>Disease<\/strong>:&nbsp;Powdery scab<br><strong>Pathogen<\/strong>:&nbsp;<em>Spongospora subterranea<\/em><\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/dg121l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg121L-396x264.jpg\" alt=\"Powdery scab on potato\" class=\"wp-image-2621\" width=\"198\" height=\"132\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg121L-396x264.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg121L.jpg 600w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Symptoms on root.<br><strong>Photo Source: <\/strong>G.Q. Pelter<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-powdery-scab-2l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-powdery-scab-2L-396x223.jpg\" alt=\"Powdery scab symptoms on potato\" class=\"wp-image-2622\" width=\"198\" height=\"112\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-powdery-scab-2L-396x223.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-powdery-scab-2L.jpg 750w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Note raised lesions on the tuber surface where the epidermis has broken away to expose dark, powdery masses.<br><strong>Photo Source: <\/strong>Babette Gundersen<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/pnwhandbooks.org\/plantdisease\/host-disease\/potato-solanum-tuberosum-powdery-scab\">Pacific Northwest Plant Disease Management Handbook: Potato (Solanum tuberosum) \u2013 Powdery Scab<\/a>.<\/li>\n\n\n\n<li><a href=\"https:\/\/hortsense.cahnrs.wsu.edu\/fact-sheet\/potato-powdery-scab\/\">Potato: Powdery scab<\/a>, Washington State University Hortsense.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"PurpleTop\">Purple top<\/h3>\n\n\n\n<p><strong>Disease<\/strong>:&nbsp;Purple Top<br><strong>Pathogen<\/strong>: Beet leafhopper transmitted virescence agent (BLTVA), a phytoplasma.<br><strong>Vector<\/strong>: Beet leafhopper (<em>Circulifer tenellus<\/em>), and the phytoplasma can be carried in infected tubers.<\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image size-full is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-purple-top-1l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-purple-top-1L.jpg\" alt=\"symptoms on a stem and leaves of a potato plant with BLTVA\" class=\"wp-image-2623\" width=\"159\" height=\"238\" \/><\/a><figcaption class=\"wp-element-caption\">Symptoms on a stem and leaves of a potato plant infected with BLTVA as a result of current-season infection.\n<br><strong>Photo Source: <\/strong>Pete Thomas, USDA-ARS Prosser<\/figcaption><\/figure>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/pnwhandbooks.org\/plantdisease\/host-disease\/potato-solanum-tuberosum-purple-top\">Pacific Northwest Plant Disease Management Handbook: Potato (Solanum tuberosum) \u2013 Purple Top<\/a>.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"PVY\">PVY<\/h3>\n\n\n\n<p><strong>Disease<\/strong>:&nbsp;PVY<br><strong>Pathogen<\/strong>:&nbsp;<em>Potato virus Y<\/em> (PVY), a virus transmitted mechanically and by insects (aphids).<\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-pvy-1l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-PVY-1L-396x193.jpg\" alt=\"symptoms of PVY on potato leaves\" class=\"wp-image-2625\" width=\"198\" height=\"97\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-PVY-1L-396x193.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-PVY-1L.jpg 750w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Symptoms on leaves of the potato cultivar Atlantic infected with<i> Potato virus Y.<\/i><br><strong>Photo Source: <\/strong>Jordan Eggers, Oregon State University<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-pvy-4l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-PVY-4L-396x388.jpg\" alt=\"symptoms of PVY on potato\" class=\"wp-image-2628\" width=\"198\" height=\"194\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-PVY-4L-396x388.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-PVY-4L.jpg 562w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Foliar mosaic symptoms caused by PVY on potato cultivars Ranger, Burbank, and Alturas (in order left to right).<br><strong>Photo Source: <\/strong>Jordan Eggers, Oregon State University<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-pvy-3l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-PVY-3L-396x426.jpg\" alt=\"PVY symptoms-1\" class=\"wp-image-2627\" width=\"198\" height=\"213\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-PVY-3L-396x426.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-PVY-3L.jpg 511w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Foliar mosaic symptoms caused by PVY on potato cultivars Ranger, Burbank, and Alturas (in order left to right).<br><strong>Photo Source: <\/strong>Jordan Eggers, Oregon State University<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-pvy-2l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-PVY-2L-396x357.jpg\" alt=\"PVY symptoms-2\" class=\"wp-image-2626\" width=\"198\" height=\"179\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-PVY-2L-396x357.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-PVY-2L.jpg 610w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Foliar mosaic symptoms caused by PVY on potato cultivars Ranger, Burbank, and Alturas (in order left to right).<br><strong>Photo Source: <\/strong>Jordan Eggers, Oregon State University<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n<\/div>\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-pvy-5l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-PVY-5L-396x277.jpg\" alt=\"PVY symptoms-3\" class=\"wp-image-2629\" width=\"198\" height=\"139\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-PVY-5L-396x277.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-PVY-5L.jpg 750w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Necrotic leaf spots caused by PVY on the potato cultivar Yukon Gold.<br><strong>Photo Source: <\/strong>Jordan Eggers, Oregon State University<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-pvy-6l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-PVY-6L-396x265.jpg\" alt=\"PVY symptoms-4\" class=\"wp-image-2630\" width=\"198\" height=\"133\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-PVY-6L-396x265.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-PVY-6L.jpg 750w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Foliar ring spots caused by PVY on the potato cultivar Yukon Gold.<br><strong>Photo Source: <\/strong>Jordan Eggers, Oregon State University<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-full is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-pvy-7l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-PVY-7L.jpg\" alt=\"PVY symptoms-5\" class=\"wp-image-2631\" width=\"162\" height=\"275\" \/><\/a><figcaption class=\"wp-element-caption\">Leaf vein necrosis caused by PVY on the potato cultivar Alturas.<br><strong>Photo Source: <\/strong>Jordan Eggers, Oregon State University<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-pvy-8l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-PVY-8L-396x530.jpg\" alt=\"PVY symptoms of PVY infection on the potato clutivar Canela Russet\" class=\"wp-image-2632\" width=\"198\" height=\"265\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-PVY-8L-396x530.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-PVY-8L.jpg 411w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Symptoms of PVY infection on the potato cultivar Canela Russet.<br><strong>Photo Source: <\/strong>Carrie Wohleb, WSU Extension Educator for Grant\/Adams Counties\n<\/figcaption><\/figure>\n\n<\/div>\r\n\n<\/div>\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-pvy-9l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-PVY-9L-396x530.jpg\" alt=\"PVY symptoms-6\" class=\"wp-image-2633\" width=\"198\" height=\"265\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-PVY-9L-396x530.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-PVY-9L.jpg 411w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Symptoms of PVY infection on the potato cultivar Canela Russet.<br><strong>Photo Source: <\/strong>Carrie Wohleb, WSU Extension Educator for Grant\/Adams Counties\n<\/figcaption><\/figure>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-pvy-10l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-PVY-10L-396x530.jpg\" alt=\"PVY symptoms-7\" class=\"wp-image-2634\" width=\"198\" height=\"265\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-PVY-10L-396x530.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-PVY-10L.jpg 411w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Symptoms of PVY infection on the potato cultivar Canela Russet.<br><strong>Photo Source: <\/strong>Carrie Wohleb, WSU Extension Educator for Grant\/Adams Counties\n<\/figcaption><\/figure>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-pvy-11l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-PVY-11L-396x530.jpg\" alt=\"pvy on potato\" class=\"wp-image-2635\" width=\"198\" height=\"265\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-PVY-11L-396x530.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-PVY-11L.jpg 411w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Symptoms of PVY infection on the potato cultivar Canela Russet.<br><strong>Photo Source: <\/strong>Carrie Wohleb, WSU Extension Educator for Grant\/Adams Counties\n<\/figcaption><\/figure>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n<\/div>\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-pvy-12l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-PVY-12L-396x223.jpg\" alt=\"symptoms of Potato virus Y infection on the potato cultivar Chieftain\" class=\"wp-image-2636\" width=\"198\" height=\"112\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-PVY-12L-396x223.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-PVY-12L.jpg 700w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Severe symptoms of <i>Potato virus Y<\/i> infection on the potato cultivar Chieftain.<br><strong>\nPhoto Source: <\/strong>Babette Gunderson, Washington State University<\/figcaption><\/figure>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-pvy-13l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-PVY-13L-396x223.jpg\" alt=\"PVY symptoms-8\" class=\"wp-image-2637\" width=\"198\" height=\"112\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-PVY-13L-396x223.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-PVY-13L.jpg 750w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Severe symptoms of <i>Potato virus Y<\/i> infection on the potato cultivar Chieftain.<br><strong>\nPhoto Source: <\/strong>Babette Gunderson, Washington State University<\/figcaption><\/figure>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/s3.wp.wsu.edu\/uploads\/sites\/2723\/2021\/08\/Case-study-4a-PVY.pdf\">Seedborne Potato Virus Y (PVY) (pdf)<\/a>, Identification &amp; Management of Emerging Vegetable Problems in the Pacific Northwest. Pacific Northwest Vegetable Extension Group.<\/li>\n\n\n\n<li><a href=\"https:\/\/pnwhandbooks.org\/plantdisease\/host-disease\/potato-solanum-tuberosum-latent-viruses\">Pacific Northwest Plant Disease Management Handbook: Potato (Solanum tuberosum) \u2013 Latent Viruses<\/a>.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Pythium\">Pythium<\/h3>\n\n\n\n<p><strong>Disease<\/strong>:&nbsp;Pythium<br><strong>Pathogen<\/strong>:&nbsp;<em>Pythium&nbsp;species<\/em><\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/dg24l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg24L-396x264.jpg\" alt=\"Pythium on potato\" class=\"wp-image-2640\" width=\"198\" height=\"132\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg24L-396x264.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg24L.jpg 600w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\"><strong>Photo Source: <\/strong>D.A. Inglis<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n<\/div>\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Pythiumleak\">Pythium leak<\/h3>\n\n\n\n<p><strong>Disease<\/strong>:&nbsp;Pythium leak<br><strong>Pathogen<\/strong>:&nbsp;<em>Pythium&nbsp;species<\/em><\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/dg23l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg23L-396x264.jpg\" alt=\"Pythium leak on potato\" class=\"wp-image-2639\" width=\"198\" height=\"132\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg23L-396x264.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg23L.jpg 600w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\"><strong>Photo Source: <\/strong>D.A. Inglis<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/pnwhandbooks.org\/plantdisease\/host-disease\/potato-solanum-tuberosum-leak\">Pacific Northwest Plant Disease Management Handbook: Potato (Solanum tuberosum) \u2013 Leak<\/a>.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Rhizoctonia\">Rhizoctonia stem lesion<\/h3>\n\n\n\n<p><strong>Disease<\/strong>:&nbsp;Rhizoctonia stem lesion<br><strong>Pathogen<\/strong>:&nbsp;<em>Rhizoctonia solani<\/em><\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/dg28l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg28L-396x594.jpg\" alt=\"Rhizoctonia stem lesion\" class=\"wp-image-2641\" width=\"198\" height=\"297\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg28L-396x594.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg28L.jpg 400w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\"><strong>\nPhoto Source: <\/strong>D.A. Inglis<\/figcaption><\/figure>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/dg29l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg29L-396x264.jpg\" alt=\"Rhizoctonia stem lesion symptoms\" class=\"wp-image-2642\" width=\"198\" height=\"132\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg29L-396x264.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg29L.jpg 600w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Aerial tubers caused by Rhizoctonia stem lesion.<br><strong>\nPhoto Source: <\/strong>D.A. Inglis<\/figcaption><\/figure>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/pnwhandbooks.org\/plantdisease\/host-disease\/potato-solanum-tuberosum-rhizoctonia-canker-black-scurf\">Pacific Northwest Plant Disease Management Handbook: Potato (Solanum tuberosum) \u2013 Rhizoctonia Canker {Black Scurf}<\/a>.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Ringrot\">Ring rot<\/h3>\n\n\n\n<p><strong>Disease<\/strong>:&nbsp;Ring rot<br><strong>Pathogen<\/strong>:&nbsp;<em>Clavibacter michiganensis&nbsp;subsp.&nbsp;sepedonicus<\/em><\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/dg122l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg122L-396x264.jpg\" alt=\"Ring Rot (advanced foliar symptoms) on potato\" class=\"wp-image-2645\" width=\"198\" height=\"132\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg122L-396x264.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg122L.jpg 600w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Advanced foliar symptoms.<br><strong>Photo Source: <\/strong>G.Q. Pelter<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/dg120l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg120L-396x264.jpg\" alt=\"Ring rot (foliar symptoms) on potato\" class=\"wp-image-2644\" width=\"198\" height=\"132\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg120L-396x264.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg120L.jpg 600w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Foliar symptoms.<br><strong>Photo Source: <\/strong>G.Q. Pelter<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-bacterial-ring-rot-1l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-bacterial-ring-rot-1L-396x202.jpg\" alt=\"bacterial ring rot on potato\" class=\"wp-image-2646\" width=\"198\" height=\"101\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-bacterial-ring-rot-1L-396x202.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-bacterial-ring-rot-1L.jpg 750w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Severe symptoms of bacterial ring rot on a Russet Burbank seed tuber.<br><strong>Photo Source: <\/strong>Babette Gundersen<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-bacterial-ring-rot-2l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-bacterial-ring-rot-2L-396x244.jpg\" alt=\"bacterial ring rot symptoms on potato\" class=\"wp-image-2647\" width=\"198\" height=\"122\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-bacterial-ring-rot-2L-396x244.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-bacterial-ring-rot-2L.jpg 750w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Note discolored, cheesy consistency of the tuber\u2019s vascular ring and the dry gray pockets of decayed tissue surrounding it.<br><strong>Photo Source: <\/strong>Babette Gundersen<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/pubs.extension.wsu.edu\/bacterial-ring-rot-on-potatoes\">Bacterial Ring Rot on Potatoes<\/a>, Washington State University Extension Fact Sheet FS102E.<\/li>\n\n\n\n<li><a href=\"https:\/\/pnwhandbooks.org\/plantdisease\/host-disease\/potato-solanum-tuberosum-ring-rot\">Pacific Northwest Plant Disease Management Handbook: Potato (Solanum tuberosum) \u2013 Ring Rot<\/a>.<\/li>\n\n\n\n<li><a href=\"http:\/\/ipm.ucanr.edu\/PMG\/GARDEN\/VEGES\/DISEASES\/bacringrot.html\">Potato: Bacterial Ring Rot<\/a>, UC IPM Online, University of California.<\/li>\n\n\n\n<li>Bacterial Ring Rot of Potatoes, Ohio State University Extension Fact Sheet.<\/li>\n\n\n\n<li><a href=\"https:\/\/www.agdia.com\/testing-services\/Potato\">AgDia Testing Services<\/a>.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Ringrotandsoftrot\">Ring rot and soft rot<\/h3>\n\n\n\n<p><strong>Disease<\/strong>:&nbsp;Ring rot and soft rot<br><strong>Pathogen<\/strong>:&nbsp;<em>Bacterial species<\/em><\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/dg124l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg124L.jpg\" alt=\"Ring rot and soft rot on potato\" class=\"wp-image-2648\" width=\"198\" height=\"297\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg124L.jpg 400w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg124L-396x594.jpg 396w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\"><strong>Photo Source: <\/strong>G.Q. Pelter<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/pubs.extension.wsu.edu\/bacterial-soft-rot-and-lenticel-spot-on-potato-tubers\">Bacterial Soft Rot and Lenticel Spot on Potato Tubers<\/a>, Washington State University Extension Fact Sheet.<\/li>\n\n\n\n<li><a href=\"https:\/\/www2.ipm.ucanr.edu\/agriculture\/potato\/bacterial-soft-rot-and-blackleg\/\">Potato: Bacterial Soft Rot and Blackleg<\/a>, UC IPM Online.<\/li>\n\n\n\n<li><a href=\"https:\/\/www.plantmanagementnetwork.org\/edcenter\/seminars\/Potato\/SoftRot\/\">Soft Rot and Blackleg Diseases of Potato<\/a>, Plant Management Network International.<\/li>\n\n\n\n<li>Video series:&nbsp;Disease management of soft rot bacteria in potatoes. Authors: Noah Rosenzweig and Saltanat Mambetova, Michigan State University Department of Plant, Soil and Microbial Sciences; James DeDecker, Monica Jean and Frederick Springborn, Michigan State University Extension. Michigan State University Extension, 2019.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Silverscurf\">Silver scurf<\/h3>\n\n\n\n<p><strong>Disease<\/strong>:&nbsp;Silver scurf<br><strong>Pathogen<\/strong>:&nbsp;<em>Helminthosporium solani<\/em><\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/dg26l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg26L-396x264.jpg\" alt=\"silver scurf on potato\" class=\"wp-image-2649\" width=\"198\" height=\"132\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg26L-396x264.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg26L.jpg 600w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\"><strong>Photo Source: <\/strong>D.A. Inglis<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/catalog.extension.oregonstate.edu\/sites\/catalog\/files\/project\/pdf\/pnw596.pdf\">Silver Scurf Management in Potatoes (pdf)<\/a>, Oregon State University, University of Idaho, Washington State University.<\/li>\n\n\n\n<li><a href=\"https:\/\/pnwhandbooks.org\/plantdisease\/host-disease\/potato-solanum-tuberosum-silver-scurf\">Pacific Northwest Plant Disease Management Handbook: Potato (Solanum tuberosum) \u2013 Silver Scurf<\/a>.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Skinstainsymptoms\">Skin stain symptoms<\/h3>\n\n\n\n<p><strong>Disease<\/strong>:&nbsp;Skin stain symptoms<br><strong>Pathogen<\/strong>:<em>&nbsp;Fusarium&nbsp;species<\/em><\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/dg27l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg27L-396x264.jpg\" alt=\"Skin stain symptoms on potato\" class=\"wp-image-2650\" width=\"198\" height=\"132\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg27L-396x264.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg27L.jpg 600w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\"><strong>Photo Source: <\/strong>D.A. Inglis<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n<\/div>\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Tomatospottedwilt\">Tomato spotted wilt<\/h3>\n\n\n\n<p><strong>Disease<\/strong>:&nbsp;Tomato spotted wilt<br><strong>Pathogen<\/strong>:&nbsp;<em>Tomato spotted wilt virus<\/em>&nbsp;(TSWV)<\/p>\n\n\n\n<p>This disease is more commonly associated with tomato and other crops than with potato.<\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-tomato-spotted-wilt-2l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-tomato-spotted-wilt-2L-396x469.jpg\" alt=\"Tomato spotted wilt on potato\" class=\"wp-image-2653\" width=\"198\" height=\"235\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-tomato-spotted-wilt-2L-396x469.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-tomato-spotted-wilt-2L.jpg 507w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Foliar symptoms of tomato spotted wilt on a potato plant.<br><strong>\nPhoto Source: <\/strong>Jordan Eggers and Phil Hamm<\/figcaption><\/figure>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-tomato-spotted-wilt-1l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-tomato-spotted-wilt-1L-396x284.jpg\" alt=\"Tomato spotted wilt symptoms on potato\" class=\"wp-image-2652\" width=\"198\" height=\"142\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-tomato-spotted-wilt-1L-396x284.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-tomato-spotted-wilt-1L.jpg 800w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Foliar symptoms of tomato spotted wilt on a potato plant.<br><strong>\nPhoto Source: <\/strong>Jordan Eggers and Phil Hamm<\/figcaption><\/figure>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li>Pacific Northwest Plant Disease Management Handbook: Tomato (Lycopersicon esculentum) \u2013 Tomato Spotted Wilt, See Also:&nbsp;<a href=\"https:\/\/pnwhandbooks.org\/plantdisease\/host-disease\/greenhouse-plants-ornamental-impatiens-necrotic-spot\">Greenhouse Plants, Ornamental Impatiens Necrotic Spot<\/a>.<\/li>\n\n\n\n<li><a href=\"http:\/\/vegetablemdonline.ppath.cornell.edu\/factsheets\/Virus_SpottedWilt.htm\">Tomato Spotted Wilt Virus<\/a>, Vegetable MD Online, Cornell University.<\/li>\n\n\n\n<li><a href=\"https:\/\/apsjournals.apsnet.org\/doi\/abs\/10.1094\/PDIS-93-8-0845A\">First Report of Tomato&nbsp;spotted wilt virus&nbsp;Causing Potato Tuber Necrosis in Texas<\/a>. APS Journals, The American Phytopathological Socitey.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Verticilliumwilt\">Verticillium wilt<\/h3>\n\n\n\n<p class=\"wsu-max-width--hero\"><strong>Disease<\/strong>:&nbsp;Verticillium wilt<br><strong>Pathogen<\/strong>:&nbsp;<em>Verticillium dahliae<\/em><br><b>Host crops<\/b>: Numerous vegetables including many brassica vegetables (but not broccoli), cucumber,&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/eggplant\/#Verticilliumwilt\">eggplant<\/a>, pepper,&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/potato\/#Verticilliumwilt\">potato<\/a>,&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/cucurbits\/pumpkin\/#Verticilliumwilt\">pumpkin<\/a>, radish,&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/spinach\/#Verticillium\">spinach<\/a>,&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/tomato\/#Verticilliumwilt\">tomato<\/a>,&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/cucurbits\/watermelon\/#Verticilliumwilt\">watermelon<\/a>, etc.<\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/dg123l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg123L.jpg\" alt=\"Verticillium wilt on potato\" class=\"wp-image-2654\" width=\"198\" height=\"297\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg123L.jpg 400w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg123L-396x594.jpg 396w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\"><strong>Photo Source: <\/strong>G.Q. Pelter<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/pnwhandbooks.org\/plantdisease\/host-disease\/potato-solanum-tuberosum-verticillium-wilt-potato-early-dying\">Pacific Northwest Plant Disease Management Handbook: Potato (Solanum tuberosum) \u2013 Verticillium Wilt {Potato Early Dying}<\/a>.<\/li>\n\n\n\n<li><a href=\"https:\/\/hortsense.cahnrs.wsu.edu\/fact-sheet\/potato-verticillium-wilt-potato-early-dying\/\">Potato: Verticillium wilt (Potato early dying)<\/a>, Washington State University Hortsense.<\/li>\n\n\n\n<li>See&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/diseases-pests-and-other-problems-common-to-many-vegetables\/#Verticillium\">Diseases, pests, and other problems common to many vegetables: Verticillium wilt<\/a>.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Whitemold\">White mold<\/h3>\n\n\n\n<p><strong>Disease<\/strong>:&nbsp;White mold<br><strong>Pathogen<\/strong>:&nbsp;<em>Sclerotinia sclerotiorum<\/em><br><b>Host crops<\/b>:&nbsp;<a href=\"http:\/\/stage.web.wsu.edu\/path-team\/bean\/#White mold\">Bean<\/a>, various brassica vegetables,&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/bean\/#WhiteMold\">carrot<\/a>, eggplant,&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/lettuce\/#WhiteMold\">lettuce<\/a>, potato,&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/tomato\/#Whitemold\">tomato<\/a>, etc.<\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/dg135l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg135L-396x264.jpg\" alt=\"White mold on potato\" class=\"wp-image-2655\" width=\"198\" height=\"132\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg135L-396x264.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg135L.jpg 600w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\"><strong>Photo Source: <\/strong>G.Q. Pelter<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/pnwhandbooks.org\/plantdisease\/host-disease\/potato-solanum-tuberosum-white-mold-sclerotinia-stem-rot\">Pacific Northwest Plant Disease Management Handbook: Potato (Solanum tuberosum) \u2013 White Mold {Sclerotinia Stem Rot}<\/a>.<\/li>\n\n\n\n<li><a href=\"https:\/\/www.plantmanagementnetwork.org\/edcenter\/seminars\/potato\/WhiteMold\/\">White Mold of Potato: Epidemiology and Management<\/a>, Plant Management Network International.<\/li>\n\n\n\n<li>See&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/diseases-pests-and-other-problems-common-to-many-vegetables\/#Whitemold\">Diseases, pests, and other problems common to many vegetables: White mold<\/a>.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Zebrachip\">Zebra chip<\/h3>\n\n\n\n<p><strong>Disease<\/strong>:&nbsp;Zebra chip<br><strong>Pathogen<\/strong>:&nbsp;<em>Candidatus<\/em>&nbsp;Liberibacter Solanacearum<br><strong>Vector<\/strong>: Potato psyllid,&nbsp;<em>Bactericera cockerelli<\/em><\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-zebra-chip-1l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-1L-396x254.jpg\" alt=\"zebra chip symptoms on potato leaves\" class=\"wp-image-2657\" width=\"198\" height=\"127\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-1L-396x254.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-1L.jpg 650w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Foliar symptoms of a potato plant infected with the zebra chip pathogen.<br><strong>Photo Source: <\/strong>Silvia Rondon, Oregon State University<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-zebra-chip-2l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-2L-396x264.jpg\" alt=\"zebra chip symptoms on potato stem\" class=\"wp-image-2658\" width=\"198\" height=\"132\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-2L-396x264.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-2L.jpg 650w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Discoloration inside the main tap root of a potato plant infected by <i>Candidatus<\/i> Liberibacter.<br><strong>Photo Source: <\/strong>Silvia Rondon, Oregon State University<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-zebra-chip-3l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-3L-396x264.jpg\" alt=\"zebra chip symptoms on potato tuber exterior\" class=\"wp-image-2659\" width=\"198\" height=\"132\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-3L-396x264.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-3L.jpg 750w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">inkish discoloration of the stem end of a tuber.<br><strong>Photo Source: <\/strong>Silvia Rondon, Oregon State University<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-zebra-chip-4l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-4L-396x264.jpg\" alt=\"discolored potato caused by zebra chip\" class=\"wp-image-2660\" width=\"198\" height=\"132\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-4L-396x264.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-4L.jpg 750w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Brown vascular discoloration of a potato tuber characteristic of zebra chip.<br><strong>Photo Source: <\/strong>Silvia Rondon, Oregon State University<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n<\/div>\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-zebra-chip-5l\/\"><img decoding=\"async\" loading=\"lazy\" width=\"396\" height=\"264\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-5L-396x264.jpg\" alt=\"zebra chip symptoms\" class=\"wp-image-2661\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-5L-396x264.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-5L.jpg 750w\" sizes=\"(max-width: 396px) 100vw, 396px\" \/><\/a><figcaption class=\"wp-element-caption\">Cross-section of a potato tuber with zebra chip.<br><strong>Photo Source: <\/strong>Silvia Rondon, Oregon State University<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-zebra-chip-6l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-6L.jpg\" alt=\"adult psyllid\" class=\"wp-image-2662\" width=\"198\" height=\"149\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-6L.jpg 650w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-6L-396x297.jpg 396w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Adult potato psyllid.<br><strong>Photo Source: <\/strong>OSU-HAREC Rondon\u2019s lab (A. Murphy)<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-zebra-chip-7l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-7L-396x308.jpg\" alt=\"yellow psyllid nymph\" class=\"wp-image-2663\" width=\"198\" height=\"154\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-7L-396x308.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-7L.jpg 600w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Potato psyllid nymph.<br><strong>Photo Source: <\/strong>OSU-HAREC Rondon\u2019s lab (A. Murphy)<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-zebra-chip-8l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-8L-396x268.jpg\" alt=\"zebra chip symptoms on potato tuber\" class=\"wp-image-2664\" width=\"198\" height=\"134\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-8L-396x268.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-8L.jpg 475w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Photo tuber post-peeling.<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n<\/div>\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-zebra-chip-9l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-9L-396x530.jpg\" alt=\"zebra chip symptoms on potato leaves\" class=\"wp-image-2665\" width=\"198\" height=\"265\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-9L-396x530.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-9L.jpg 478w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Early foliar symptoms of a potato plant infected with the zebra chip pathogen.<br><strong>Photo Source: <\/strong>Carrie H. Wohleb, WSU<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-zebra-chip-10l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-10L-396x530.jpg\" alt=\"zebra chip symptoms in potato tuber\" class=\"wp-image-2666\" width=\"198\" height=\"265\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-10L-396x530.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-10L.jpg 478w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Tuber showing characteristic symptoms of zebra chip.<br><strong>Photo Source: <\/strong>Carrie H. Wohleb, WSU<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-zebra-chip-11l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-11L-396x259.jpg\" alt=\"zebra chip symptoms in potato tubers\" class=\"wp-image-2667\" width=\"198\" height=\"130\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-11L-396x259.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-11L.jpg 640w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Tubers showing symptoms of zebra chip.  Healthy tuber shown on the right.<br><strong>Photo Source: <\/strong>Carrie H. Wohleb, WSU<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/s3.wp.wsu.edu\/uploads\/sites\/2723\/2021\/08\/Psyllid-Info-Card.pdf\">Information on the Potato psyllid (pdf)<\/a>.<\/li>\n\n\n\n<li><a href=\"https:\/\/pubs.extension.wsu.edu\/potato-psyllid-vector-of-zebra-chip-disease-in-the-pacific-northwest-biology-ecology-and-management\">Potato Psyllid Vector of Zebra Chip Disease in the Pacific Northwest: Biology, Ecology, and Management<\/a>, PNW 633.<\/li>\n\n\n\n<li><a href=\"https:\/\/www.apsnet.org\/edcenter\/apsnetfeatures\/Pages\/PotatoZebraChip.aspx\">History in the Making: Potato Zebra Chip Disease Associated with a New Psyllid-borne Bacterium \u2013 A Tale of Striped Potatoes<\/a>.<\/li>\n\n\n\n<li><a href=\"https:\/\/amarillo.tamu.edu\/facultystaff\/charles-m-rush-ph-d-regents-fellow\/the-zebra-chip-project\/\">The Zebra Chip Project<\/a>, Texas Agrilife Research and Extension Center at Amarillo.<\/li>\n\n\n\n<li><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/Mail-Attachment.eml\">Phil Hamm\u2019s message to the industry<\/a>.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-crimson wsu-heading--mark-centered\" id=\"Nema\">Nematodes<\/h2>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Rootknot\">Root knot<\/h3>\n\n\n\n<p class=\"collapse_bottom\"><strong>Disease<\/strong>:&nbsp;Root knot<br><strong>Pathogen<\/strong>:&nbsp;<em>Meloidogyne&nbsp;species<\/em><br><strong>Host crops<\/strong>: Numerous plant species, including many vegetables such as&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/carrot\/#Rootknot\">carrot<\/a>,&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/coriander-cilantro\/#Rootknot\">coriander<\/a>, onion, potato, etc.<\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/dg131l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg131L-396x264.jpg\" alt=\"root knot on potato-1\" class=\"wp-image-2671\" width=\"198\" height=\"132\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg131L-396x264.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg131L.jpg 600w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Symptoms of root knot on potato tubers.<br><strong>Photo Source: <\/strong>G.Q. Pelter<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/dg126l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg126L-396x264.jpg\" alt=\"root knot on potato-2\" class=\"wp-image-2670\" width=\"198\" height=\"132\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg126L-396x264.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/dg126L.jpg 600w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Symptoms of root knot on potato tubers.<br><strong>Photo Source: <\/strong>G.Q. Pelter<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/pnwhandbooks.org\/plantdisease\/host-disease\/potato-solanum-tuberosum-nematode-root-knot\">Pacific Northwest Plant Disease Management Handbook: Potato (Solanum tuberosum) \u2013 Nematode, Root-knot<\/a>.<\/li>\n\n\n\n<li>See&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/diseases-pests-and-other-problems-common-to-many-vegetables\/#Rootknot\">Diseases, pests, and other problems common to many vegetables: Root knot<\/a>.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-centered\" id=\"InsectMite\">Insect\/Mite Pests<\/h2>\n\n\n\n<ul>\n<li><a href=\"https:\/\/www.nwpotatoresearch.com\/\">2019 Integrated Pest Management Guidelines for Insects and Mites in Idaho, Oregon and Washington Potatoes<\/a>&nbsp;(PDF), authored by Alan Schreiber (Agriculture Development Group, Inc.), Andrew Jensen (Northwest Potato Research Consortium), Silvia Rondon (Oregon State University), Erik Wenninger (University of Idaho), Stuart Reitz (Oregon State University), Tim Waters (Washington State University). Updated June 2019.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Aphids\">Green peach aphid and potato aphid<\/h3>\n\n\n\n<p class=\"collapse_bottom wsu-max-width--hero\"><strong>Common Name<\/strong>:&nbsp;Green peach aphid and potato aphid<br><strong>Latin binomial<\/strong>:&nbsp;<em>Myzus persicae<\/em>&nbsp;and&nbsp;<em>Macrosiphum<\/em> <em>euphorbiae<\/em>, respectively<br><b>Host crops<\/b>: In addition to potato, tomato, eggplant and pepper, the green peach aphid can feed on many other vegetables including broccoli, cabbage, spinach, Swiss chard, squash, pumpkin, beet as well as many weed species including Brassicaceae (cruciferous) weeds. The potato aphid can feed on cucumber, potato, melon, tomato, pumpkins, squash, and corn seed.<\/p>\n\n\n<div class=\"wsu-row wsu-row--thirds\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium\"><img decoding=\"async\" loading=\"lazy\" width=\"396\" height=\"297\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/green-peach-aphid-1L-396x297.jpg\" alt=\"green peach aphid nymph on leaf\" class=\"wp-image-1367\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/green-peach-aphid-1L-396x297.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/green-peach-aphid-1L.jpg 468w\" sizes=\"(max-width: 396px) 100vw, 396px\" \/><figcaption class=\"wp-element-caption\">Green peach aphid may be found along the midrib on the underside of leaves of a host plant. Mature aphids are about 2 mm long (ca. 1\/16 inch), egg-shaped, and the color of the wingless nymphs and adults ranges from pinkish yellow to yellowish green. There are usually multiple individuals in a single colony.<br><strong>Photo Source: <\/strong>Michael Bush, WSU Extension, Yakima, WA<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/green-peach-aphid-2l\/\"><img decoding=\"async\" loading=\"lazy\" width=\"396\" height=\"293\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/green-peach-aphid-2L-396x293.jpg\" alt=\"green peach aphid developed wings\" class=\"wp-image-1368\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/green-peach-aphid-2L-396x293.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/green-peach-aphid-2L.jpg 468w\" sizes=\"(max-width: 396px) 100vw, 396px\" \/><\/a><figcaption class=\"wp-element-caption\">The green peach aphid tends to overwinter in stone fruit trees. By late May to early June, individual aphids in a colony develop wings and fly to vegetable crops and a wide range of weeds. As the aphids disperse (June to August), they can transmit important viruses including <a href=\"https:\/\/stage.web.wsu.edu\/path-team\/potato\/#Leaf roll\">potato leaf roll virus<\/a> and <a href=\"https:\/\/stage.web.wsu.edu\/path-team\/potato\/#PVY\">potato virus Y<\/a>.<br><strong>Photo Source: <\/strong>Michael Bush, WSU Extension, Yakima, WA<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/pumpkin-green-peach-aphid-3l\/\"><img decoding=\"async\" loading=\"lazy\" width=\"396\" height=\"264\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/Pumpkin-Green-peach-aphid-3L-396x264.jpg\" alt=\"aphid damage on leaf\" class=\"wp-image-2284\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/Pumpkin-Green-peach-aphid-3L-396x264.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/Pumpkin-Green-peach-aphid-3L.jpg 468w\" sizes=\"(max-width: 396px) 100vw, 396px\" \/><\/a><figcaption class=\"wp-element-caption\">The easiest way to scout for aphid colonies is to search perimeter vegetable plants for copious amounts of sticky, glistening honeydew coating the upper surfaces of lower leaves of plants. Honeydew may contain numerous cast (shed) skins (white to gray) and a black sooty mold (fungus) that colonizes aphid honeydew.<br><strong>Photo Source: <\/strong>Michael Bush, WSU Extension, Yakima, WA<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/pnwhandbooks.org\/insect\/vegetable\/vegetable-pests\/common-vegetable\/vegetable-crop-aphid\">Pacific Northwest Insect Management Handbook: Vegetable crop pests-Aphid<\/a>.<\/li>\n\n\n\n<li><a href=\"https:\/\/pnwhandbooks.org\/insect\/vegetable\/irish-potato\/potato-irish-aphid\">Pacific Northwest Insect Management Handbook: Potato, Irish \u2013 Aphid<\/a>.<\/li>\n\n\n\n<li><a href=\"https:\/\/hortsense.cahnrs.wsu.edu\/fact-sheet\/common-insects-and-mites-aphids\/\">Common Insect &amp; Mite: Aphids<\/a>, Washington State University Hortsense.<\/li>\n\n\n\n<li>See&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/diseases-pests-and-other-problems-common-to-many-vegetables\/#Aphids\">Diseases, pests, and other problems common to many vegetables: Aphids<\/a>.<\/li>\n\n\n\n<li>For aphids on other crops see:&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/cucurbits\/pumpkin\/#Aphids\">pumpkin<\/a>, and&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/cucurbits\/squash\/#Aphids\">squash<\/a>.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Beetleafhopper\">Beet leafhopper<\/h3>\n\n\n\n<p class=\"wsu-max-width--hero\"><strong>Common Name<\/strong>:&nbsp;Beet leafhopper<br><strong>Latin binomial<\/strong>: <em>Circulifer tenellus<\/em><br><b>Host crops<\/b>: Wide host range, including many vegetables. The Beet leafhopper is able to transmit a phytoplasma, the beet leafhopper transmitted virescence agent (BLTVA), to plants such as potato, carrot, and radish. It can also transmit the curly top virus to plants such as bean, tomato, pepper, pumpkin, and squash.<\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-full is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-beet-leafhopper-1l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-beet-leafhopper-1L.jpg\" alt=\"close up view of beet leafhopper\" class=\"wp-image-2676\" width=\"187\" height=\"275\" \/><\/a><figcaption class=\"wp-element-caption\">The adult beet leafhopper is a small, wedge-shaped insect, approximately 1\/8 inch long.<br><strong>\nPhoto Source: <\/strong>Andy Jensen, Washington Potato Commission<\/figcaption><\/figure>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/pnwhandbooks.org\/insect\/vegetable\/irish-potato\/potato-irish-leafhopper\">Pacific Northwest Insect Management Handbook: Potato, Irish \u2013 Leafhopper<\/a>.<\/li>\n\n\n\n<li><a href=\"https:\/\/www2.ipm.ucanr.edu\/agriculture\/potato\/Beet-Leafhopper\/\">Potato: Beet Leafhopper<\/a>, UC IPM Online, University of California.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Blisterbeetle\">Blister beetle<\/h3>\n\n\n\n<p class=\"wsu-max-width--hero\"><strong>Common Name<\/strong>:&nbsp;Blister beetle<br><strong>Latin binomial<\/strong>:&nbsp;<i>Epicauta<\/i>&nbsp;<em>spp.<\/em> including&nbsp;<em>E. maculata<\/em><br><strong>Host Crops<\/strong>: Blister beetles are typically considered beneficial insects as the larvae feed on grasshopper eggs, but they are occasional pests on crops such as alfalfa, beets, beans, clover, potatoes, other vegetable and field crops, and native plants.<\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-full is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-blister-beetle-1l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-blister-beetle-1L.jpg\" alt=\"potato crop\" class=\"wp-image-2677\" width=\"207\" height=\"275\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-blister-beetle-1L.jpg 413w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-blister-beetle-1L-396x527.jpg 396w\" sizes=\"(max-width: 207px) 100vw, 207px\" \/><\/a><figcaption class=\"wp-element-caption\">Blister beetles defoliated a short section of an outside row of a potato crop, but did a little damage beyond that. The potato crop was adjacent to rangeland that had a lot of grasshopper eggs on which blister beetle larvae feed.<br><strong>\nPhoto Source: <\/strong>Sally Hubbs<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-blister-beetle-5l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-blister-beetle-5L.jpg\" alt=\"Close up photo of blister beetle\" class=\"wp-image-2681\" width=\"198\" height=\"149\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-blister-beetle-5L.jpg 750w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-blister-beetle-5L-396x297.jpg 396w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Adult blister beetle of the species <i>Epicauta pruinosa<\/i>, which is differentiated from adults of <i>E. fabricii <\/i>by the second antennal segment: shorter than the third segment on E. <i>pruinosa<\/i> but longer or equal to the third segment on <i>E. fabricii. E. fabricii<\/i> has a range south and east of Oregon, while <i>E. pruinosa,<\/i> appears to be common in the Pacific Northwest and has a wider range. The two species produce different levels of cantharin, which is toxic and lethal to cattle.<br><strong>\nPhoto Source: <\/strong>OSU-HAREC Rondon\u2019s lab (A. Murphy)<\/figcaption><\/figure>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-full is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-blister-beetle-2l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-blister-beetle-2L.jpg\" alt=\"blister beetle damage to potato\" class=\"wp-image-2678\" width=\"207\" height=\"275\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-blister-beetle-2L.jpg 413w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-blister-beetle-2L-396x527.jpg 396w\" sizes=\"(max-width: 207px) 100vw, 207px\" \/><\/a><figcaption class=\"wp-element-caption\">Blister beetles defoliated a short section of an outside row of a potato crop, but did a little damage beyond that. The potato crop was adjacent to rangeland that had a lot of grasshopper eggs on which blister beetle larvae feed.<br><strong>\nPhoto Source: <\/strong>Sally Hubbs<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-blister-beetle-6l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-blister-beetle-6L.jpg\" alt=\"Close up p view of blister beetle\" class=\"wp-image-2682\" width=\"198\" height=\"149\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-blister-beetle-6L.jpg 750w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-blister-beetle-6L-396x297.jpg 396w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Adult blister beetle of the species <i>Epicauta pruinosa<\/i>, which is differentiated from adults of <i>E. fabricii <\/i>by the second antennal segment: shorter than the third segment on E. <i>pruinosa<\/i> but longer or equal to the third segment on <i>E. fabricii. E. fabricii<\/i> has a range south and east of Oregon, while <i>E. pruinosa,<\/i> appears to be common in the Pacific Northwest and has a wider range. The two species produce different levels of cantharin, which is toxic and lethal to cattle.<br><strong>\nPhoto Source: <\/strong>OSU-HAREC Rondon\u2019s lab (A. Murphy)<\/figcaption><\/figure>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-medium wsu-spacing-before--large\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-blister-beetle-3l\/\"><img decoding=\"async\" loading=\"lazy\" width=\"396\" height=\"297\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-blister-beetle-3L-396x297.jpg\" alt=\"damaged potato caused by blister bettle\" class=\"wp-image-2679\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-blister-beetle-3L-396x297.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-blister-beetle-3L.jpg 650w\" sizes=\"(max-width: 396px) 100vw, 396px\" \/><\/a><figcaption class=\"wp-element-caption\">Blister beetles defoliated a short section of an outside row of a potato crop, but did a little damage beyond that. The potato crop was adjacent to rangeland that had a lot of grasshopper eggs on which blister beetle larvae feed.<br><strong>\nPhoto Source: <\/strong>Sally Hubbs<\/figcaption><\/figure>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-full is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-blister-beetle-4l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-blister-beetle-4L.jpg\" alt=\"damaged potato field by blister beetle\" class=\"wp-image-2680\" width=\"207\" height=\"275\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-blister-beetle-4L.jpg 413w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-blister-beetle-4L-396x527.jpg 396w\" sizes=\"(max-width: 207px) 100vw, 207px\" \/><\/a><figcaption class=\"wp-element-caption\">Blister beetles defoliated a short section of an outside row of a potato crop, but did a little damage beyond that. The potato crop was adjacent to rangeland that had a lot of grasshopper eggs on which blister beetle larvae feed.<br><strong>\nPhoto Source: <\/strong>Sally Hubbs<\/figcaption><\/figure>\n\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/uspest.org\/potato\/blisterbeetles.pdf\">Blister Beetles: Coleptera: Meloidae&nbsp;Epicauta maculata, E. fabricii, E. puncticollis, Lytta nutalli (pdf)<\/a>. Modified from G. Bishop, et al. 1982.&nbsp;Management of Potato Insects in the Western States, Integrated Plant Protection Center of Oregon State University.<\/li>\n\n\n\n<li><a href=\"https:\/\/s3.wp.wsu.edu\/uploads\/sites\/2723\/2021\/08\/Case-study-8-Blister-Beetles.pdf\">Blister Beetles (pdf)<\/a>, Identification &amp; Management of Emerging Vegetable Problems in the Pacific Northwest. Pacific Northwest Vegetable Extension Group.<\/li>\n\n\n\n<li>See&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/diseases-pests-and-other-problems-common-to-many-vegetables\/#Blister\">Diseases, pests, and other problems common to many vegetables: Blister beetle<\/a>.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Coloradopotatobeetle\">Colorado potato beetle<\/h3>\n\n\n\n<p><strong>Common Name<\/strong>:&nbsp;Colorado potato beetle<br><strong>Latin binomial<\/strong>:&nbsp;<i>Leptinotarsa decemlineata<\/i>&nbsp;(Say).<br><strong>Host Crops<\/strong>: potato and tomato. Will feed on eggplant, tobacco and weeds in the&nbsp;<i>Solanum<\/i>&nbsp;genus.<\/p>\n\n\n<div class=\"wsu-row wsu-row--halves\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wsu-row wsu-row--thirds\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-full\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-colorado-potato-beetle-1l\/\"><img decoding=\"async\" loading=\"lazy\" width=\"250\" height=\"237\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-colorado-potato-beetle-1L.jpg\" alt=\"adult Colorado potato beetle-1\" class=\"wp-image-2683\" \/><\/a><figcaption class=\"wp-element-caption\">The adult Colorado potato beetle measure about 3\/8 inch (8\u201310 mm), yellowish-orange in color and sometimes called the 10-lined potato beetle.<br><strong>Photo Source: <\/strong>Lerry Lacey, USDA-ARS, Wapato, WA<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-colorado-potato-beetle-5l\/\"><img decoding=\"async\" loading=\"lazy\" width=\"397\" height=\"280\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-colorado-potato-beetle-5L.jpg\" alt=\"adult Colorado potato beetle-2\" class=\"wp-image-2686\" \/><\/a><figcaption class=\"wp-element-caption\">The adult Colorado potato beetle measure about 3\/8 inch (8\u201310 mm), yellowish-orange in color and sometimes called the 10-lined potato beetle.<br><strong>Photo Source: <\/strong> Michael Bush, WSU Extension, Yakima, WA<\/figcaption><\/figure>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-full\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-colorado-potato-beetle-2l\/\"><img decoding=\"async\" loading=\"lazy\" width=\"360\" height=\"353\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-colorado-potato-beetle-2L.jpg\" alt=\"mature larval Colorado potato beetle\" class=\"wp-image-2684\" \/><\/a><figcaption class=\"wp-element-caption\">The mature larva of the Colorado potato beetle measures 1\/2 inch long, has a reddish brown body color with two rows of black spots running along the sides, and a black head capsule.<br><strong>Photo Source: <\/strong>Lerry Lacey, USDA-ARS, Wapato, WA<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n<\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wsu-row wsu-row--thirds\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-full\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-colorado-potato-bettle-4l\/\"><img decoding=\"async\" loading=\"lazy\" width=\"468\" height=\"384\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-colorado-potato-bettle-4L.jpg\" alt=\"colorado potato beetle larva\" class=\"wp-image-2687\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-colorado-potato-bettle-4L.jpg 468w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-colorado-potato-bettle-4L-396x325.jpg 396w\" sizes=\"(max-width: 468px) 100vw, 468px\" \/><\/a><figcaption class=\"wp-element-caption\">The mature larva of the Colorado potato beetle measures 1\/2 inch long, has a reddish brown body color with two rows of black spots running along the sides, and a black head capsule.<br><strong>Photo Source: <\/strong> Michael Bush, WSU Extension, Yakima, WA<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-colorado-potato-beetle-3l\/\"><img decoding=\"async\" loading=\"lazy\" width=\"396\" height=\"410\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-colorado-potato-beetle-3L-396x410.jpg\" alt=\"adult Colorado potato beetle\" class=\"wp-image-2685\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-colorado-potato-beetle-3L-396x410.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-colorado-potato-beetle-3L.jpg 468w\" sizes=\"(max-width: 396px) 100vw, 396px\" \/><\/a><figcaption class=\"wp-element-caption\">Colorado potato beetle lays yellow to orange, football-shaped eggs (1\/16 inch tall) on the underside of potato leaves. A lacewing larva is grazing on this batch of Colorado potato beetle eggs.<br><strong>Photo Source: <\/strong> Michael Bush, WSU Extension, Yakima, WA<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n<\/div>\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/uspest.org\/pnw\/insects\/\">Pacific Northwest Insect Management Handbook<\/a>. Chapter: Irish Potatoes, Section: Colorado potato beetle to Cutworm and Armyworm.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Fleabeetle\">Flea beetle<\/h3>\n\n\n\n<p class=\"wsu-max-width--hero\"><strong>Common Name<\/strong>:&nbsp;Flea beetle<br><strong>Latin binomial<\/strong>: Pictured is the western potato flea beetle,&nbsp;<i>Epitrix subcrinita<\/i>, but the tuber flea beetle,&nbsp;<i>Epitrix tuberis<\/i>, may also damage foliage.<br><b>Host crops<\/b>: Eggplant,&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/pepper\/#Fleabeetle\">pepper<\/a>, potato, and&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/tomato\/#Fleabeetle\">tomato<\/a>.<\/p>\n\n\n<div class=\"wsu-row wsu-row--thirds\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-potato-flea-beetle-1l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-potato-flea-beetle-1L.jpg\" alt=\"damaged potato leaf caused by flea beetle \" class=\"wp-image-2542\" width=\"198\" height=\"149\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-potato-flea-beetle-1L.jpg 624w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-potato-flea-beetle-1L-396x297.jpg 396w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Potato flea beetle damage on potato foliage appears as scallop-like scoops, rounded pits or shotholes originating from the underside of the potato leaf.<br><strong>Photo Source: <\/strong>Michael Bush, WSU Extension, Yakima, WA<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-potato-flea-beetle-2l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-potato-flea-beetle-2L-396x316.jpg\" alt=\"adult potato flea beetle\" class=\"wp-image-2543\" width=\"198\" height=\"158\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-potato-flea-beetle-2L-396x316.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-potato-flea-beetle-2L.jpg 587w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">The adult flea beetle is small (~1\/16 inch long), oblong, and dark brown to bronze in color.<br><strong>Photo Source: <\/strong>Michael Bush, WSU Extension, Yakima, WA<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-potato-flea-beetle-3l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-potato-flea-beetle-3L-396x287.jpg\" alt=\"adult potato flea beetle showing enlarged hind legs\" class=\"wp-image-2544\" width=\"198\" height=\"144\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-potato-flea-beetle-3L-396x287.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-potato-flea-beetle-3L.jpg 646w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">The most distinctive feature of the flea beetle is the enlarged hind legs that provide the insect the ability to jump considerable distances when approached or disturbed.<br><strong>Photo Source: <\/strong>Michael Bush, WSU Extension, Yakima, WA<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/pubs.extension.wsu.edu\/organic-management-of-flea-beetles\">Organic Management of Flea Beetles (pdf)<\/a>, by Joyce Parker (Washington State University Department of Entomology), Carol Miles (Washington State University Department of Horticulture), Todd Murray ( Washington State University Extension Skamania County), William Snyder (Washington State University Department of Entomology). Pacific Northwest Extension Publication PNW640.<\/li>\n\n\n\n<li><a href=\"http:\/\/whatcom.wsu.edu\/ag\/documents\/seedpotatoes\/eb1198e.pdf\">Potato Flea Beetles: Biology and Control (pdf)<\/a>, Washington State University Extension Bulletin 1198E.<\/li>\n\n\n\n<li><a href=\"https:\/\/ippc2.orst.edu\/potato\/fleabeetles.pdf\">Potato Flea Beetles. Coleoptera: Chrysomelidae Western Potato Flea Beetle&nbsp;<i>Epitrix subcrinita<\/i>, Tuber Flea Beetle&nbsp;<i>Epitrix tuberis (pdf)<\/i><\/a>.<\/li>\n\n\n\n<li><a href=\"https:\/\/pnwhandbooks.org\/insect\/vegetable\/irish-potato\">Pacific Northwest Insect Management Handbook<\/a>. Chapter: Irish Potatoes, Section: Flea Beetle to Grasshopper.<\/li>\n\n\n\n<li><a href=\"https:\/\/hortsense.cahnrs.wsu.edu\/fact-sheet\/potato-potato-flea-beetles\/\">Vegetables: Potato: Potato flea beetles<\/a>. Washington State University Hortsense.<\/li>\n\n\n\n<li>See&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/diseases-pests-and-other-problems-common-to-many-vegetables\/#Fleabeetle\">Diseases, pests, and other problems common to many vegetables: Flea beetle<\/a>.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Lygusbug\">Lygus bug<\/h3>\n\n\n\n<p class=\"wsu-max-width--hero\"><strong>Common name<\/strong>: Lygus bug<br><strong>Latin binomial<\/strong>:&nbsp;<em>Lygus&nbsp;spp.<\/em><br><b>Host crops<\/b>: Numerous different species of vegetables and other crops, e.g., alfalfa, beet, cabbage,&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/carrot\/#Lygusbugs\">carrot<\/a>, potato,&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/spinach\/#bugs\">spinach<\/a>,&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/swiss-chard\/#Lygus\">Swiss chard<\/a>,etc. Lygus bugs can cause different types of damage to various growth stages of different crops. They cause blackheart on celery, blasting on flower tissues, collapse of asparagus spears, decreased yields in carrot, beet, spinach, and other seed crops, etc.<\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/lygus-bug-1l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/lygus-bug-1L.jpg\" alt=\"injured potato plants caused by lygus bugs\" class=\"wp-image-2689\" width=\"198\" height=\"149\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/lygus-bug-1L.jpg 1280w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/lygus-bug-1L-396x297.jpg 396w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Symptoms of feeding injury from lygus bugs on potato plants.<br><strong>Photo Source: <\/strong>Oregon State University HAREC Irrigated Agricultural Entomology Program (Silvia Rondon)<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/lygus-bug-4l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/lygus-bug-4L.jpg\" alt=\"lygus bug-1\" class=\"wp-image-2692\" width=\"120\" height=\"171\" \/><\/a><figcaption class=\"wp-element-caption\">Symptoms of feeding injury from lygus bugs on potato plants.<br><strong>Photo Source: <\/strong>Oregon State University HAREC Irrigated Agricultural Entomology Program (Silvia Rondon)<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/lygus-bug-5l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/lygus-bug-5L.jpg\" alt=\"lygus bug-2\" class=\"wp-image-2693\" width=\"198\" height=\"149\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/lygus-bug-5L.jpg 640w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/lygus-bug-5L-396x297.jpg 396w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Symptoms of feeding injury from lygus bugs on potato plants.<br><strong>Photo Source: <\/strong>Oregon State University HAREC Irrigated Agricultural Entomology Program (Silvia Rondon)<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t<\/div>\r\n\n<\/div>\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/lygus-bug-2l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/lygus-bug-2L.jpg\" alt=\"An adult lygus bug-3\" class=\"wp-image-2690\" width=\"198\" height=\"149\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/lygus-bug-2L.jpg 1280w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/lygus-bug-2L-396x297.jpg 396w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">An adult lygus bug.<br><strong>Photo Source: <\/strong>Oregon State University HAREC Irrigated Agricultural Entomology Program (Silvia Rondon)<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/insects-silvia-rondon-research\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/lygus-bug-3L.jpg\" alt=\"lygus bug-4\" class=\"wp-image-2691\" width=\"198\" height=\"149\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/lygus-bug-3L.jpg 1064w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/lygus-bug-3L-396x297.jpg 396w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">An adult lygus bug.<br><strong>Photo Source: <\/strong>Oregon State University EESC<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a rel=\"noopener\" href=\"https:\/\/pnwhandbooks.org\/insect\/vegetable-seed\/carrot\/carrot-seed-lygus-bug\" target=\"blank\">Pacific Northwest Insect Management Handbook: Carrot seed \u2013 Lygus bug<\/a>.<\/li>\n\n\n\n<li><a href=\"https:\/\/catalog.extension.oregonstate.edu\/em9173\">Lygus bugs on potatoes in the Pacific Northwest<\/a>. Josephine Antwi, Silvia I. Rondon, and Rodney Cooper, Oregon State University Extension Service Bulletin EM9173, 2017.<\/li>\n\n\n\n<li><a href=\"https:\/\/s3.wp.wsu.edu\/uploads\/sites\/2723\/2021\/08\/Lygus-Control-in-Potato-2016.pdf\">Lygus Control in Potato, 2016 (pdf)<\/a>. Silvia I. Rondon and Daniel I. Thompson, Arthropod Management Tests, 2017, 1\u20132, Oxford University Press, 2017.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"psyllid\">Potato psyllid; psyllid yellows<\/h3>\n\n\n\n<p class=\"wsu-max-width--hero\"><strong>Common Name<\/strong>:&nbsp;Potato psyllid; psyllid yellows<br><strong>Latin binomial<\/strong>:&nbsp;<i>Bactericera cockerelli;&nbsp;<\/i>Psyllid yellows is said to be caused by a toxin in the saliva of psyllid nymphs as they feed on potato plants. The condition is still poorly understood and some have argued it might be caused by a pathogen (e.g., a phytoplasma or bacterium) in the saliva that has not yet been characterized. Studies have shown recovery of potato plants after removal of psyllids, which supports the toxin theory.<\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-zebra-chip-6l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-6L.jpg\" alt=\"adult psyllid\" class=\"wp-image-2662\" width=\"198\" height=\"149\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-6L.jpg 650w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-6L-396x297.jpg 396w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Adult potato psyllid.<br><strong>Photo Source: <\/strong>OSU-HAREC Rondon\u2019s lab (A. Murphy)<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-zebra-chip-7l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-7L-396x308.jpg\" alt=\"yellow psyllid nymph\" class=\"wp-image-2663\" width=\"198\" height=\"154\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-7L-396x308.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-7L.jpg 600w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Potato psyllid nymph.<br><strong>Photo Source: <\/strong>OSU-HAREC Rondon\u2019s lab (A. Murphy)<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-zebra-chip-12l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-12L-396x530.jpg\" alt=\"psyllid yellows on the potato plants\" class=\"wp-image-2668\" width=\"198\" height=\"265\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-12L-396x530.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-12L.jpg 478w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Severe symptoms of psyllid yellows on the new growth of potato plants, caused by potato psyllids feeding on the plants.<br><strong>Photo Source: <\/strong>Carrie Wohleb, WSU Extension Educator<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-zebra-chip-13l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-13L-396x530.jpg\" alt=\"psyllids feeding on the plants\" class=\"wp-image-2669\" width=\"198\" height=\"265\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-13L-396x530.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-zebra-chip-13L.jpg 478w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Severe symptoms of psyllid yellows on the new growth of potato plants, caused by potato psyllids feeding on the plants.<br><strong>Photo Source: <\/strong>Carrie Wohleb, WSU Extension Educator<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/s3.wp.wsu.edu\/uploads\/sites\/2723\/2021\/08\/Psyllid-Info-Card.pdf\">Information on the Potato psyllid (pdf)<\/a>.<\/li>\n\n\n\n<li><a href=\"https:\/\/www.apsnet.org\/edcenter\/apsnetfeatures\/Pages\/PotatoZebraChip.aspx\">History in the Making: Potato Zebra Chip Disease Associated with a New Psyllid-borne Bacterium \u2013 A Tale of Striped Potatoes<\/a>.<\/li>\n\n\n\n<li><a href=\"https:\/\/amarillo.tamu.edu\/facultystaff\/charles-m-rush-ph-d-regents-fellow\/the-zebra-chip-project\/\">The Zebra Chip Project<\/a>, Texas Agrilife Research and Extensioin Center at Amarillo.<\/li>\n\n\n\n<li><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/Mail-Attachment.eml\">Phil Hamm\u2019s message to the industry<\/a>.<\/li>\n\n\n\n<li><a href=\"https:\/\/mail.google.com\/mail\/u\/0\/?ui=2&amp;ik=125f7a5fef&amp;view=lg&amp;msg=156c83cdefadb5db\">Potato Psyllids, Zebra Chip, Psyllid Yellows<\/a>, WSU Potato Pest Alert, August 26, 2016.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Spidermites\">Spider mites<\/h3>\n\n\n\n<p class=\"wsu-max-width--hero\"><strong>Common Name<\/strong>:&nbsp;Spider mites<br><strong>Latin binomial<\/strong>:&nbsp;<i>Tetranychus<\/i>&nbsp;spp. including twospotted spider mite (<i>Tetranychus urticae<\/i>), strawberry spider mite (<i>Tetranychus turkestani<\/i>), and Pacific spider mite (<i>Tetranychus pacificus<\/i>)<br><b>Host crops<\/b>: Wide host range, including many vegetables such as bean,&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/carrot\/#Spidermites\">carrot seed crops<\/a>, potato, etc.<\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/twospotted-spider-mite-1l-2\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/twospotted-spider-mite-1L-1.jpg\" alt=\"spider mites\" class=\"wp-image-1153\" width=\"198\" height=\"149\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/twospotted-spider-mite-1L-1.jpg 800w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/twospotted-spider-mite-1L-1-396x297.jpg 396w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Twospotted spider mite on potato.<br><strong>Photo Source:<\/strong> Silvia Rondon, Oregon State University<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/spider-mite-eggs-1l-2\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/spider-mite-eggs-1L-1.jpg\" alt=\"Eggs of the two-spotted spider mite, Tetranychus urticae.\" class=\"wp-image-1192\" width=\"198\" height=\"149\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/spider-mite-eggs-1L-1.jpg 850w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/spider-mite-eggs-1L-1-396x297.jpg 396w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Eggs of the two-spotted spider mite,<i> Tetranychus urticae.<\/i><br><strong>Photo Source:<\/strong> Silvia Rondon, Oregon State University<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/uspest.org\/pnw\/insects?33MITE01.dat\">Some Common Plant-Feeding Mites and Plant-Inhabiting Mite Predators in the Northwestern United States<\/a>. PNW Insect Management Handbook.<\/li>\n\n\n\n<li><a href=\"https:\/\/pnwhandbooks.org\/insect\/vegetable\/vegetable-pests\/hosts-pests\/bean-lima-spider-mite\">Lima Bean \u2013 Spider Mites<\/a>. PNW Insect Management Handbook.<\/li>\n\n\n\n<li><a href=\"https:\/\/pnwhandbooks.org\/insect\/vegetable-seed\/carrot\/carrot-seed-twospotted-spider-mite\">Carrot seed \u2013 Twospotted spider mite<\/a>. PNW Insect Management Handbook, Chapter: Vegetable Seed, Section: Carrot Seed.<\/li>\n\n\n\n<li><a href=\"http:\/\/ipm.ucanr.edu\/PMG\/PESTNOTES\/pn7405.html\">Managing spider mites in gardens and landscapes<\/a>. University of California Online Statewide Integrated Pest Management Program.<\/li>\n\n\n\n<li>See&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/diseases-pests-and-other-problems-common-to-many-vegetables\/#Spidermites\">See Diseases, pests, and other problems common to many vegetables: Spider mites<\/a>.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Tomatohornworm\">Tomato hornworm<\/h3>\n\n\n\n<p><strong>Common name (of damaging stage)<\/strong>: Tomato hornworm<br><strong>Latin binomial<\/strong>:&nbsp;<em>Manduca quinquemaculata<\/em><br><b>Host crops<\/b>:&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/pepper\/#Tomatohornworm\">Pepper<\/a>,&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/eggplant\/#Tomatohornworm\">eggplant<\/a>, potato, and&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/tomato\/#hornworm\">tomato<\/a>.<\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/tomato-tomato-hornworm-1l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/tomato-tomato-hornworm-1L-396x263.jpg\" alt=\"mature tomato hornworm-1\" class=\"wp-image-1492\" width=\"198\" height=\"132\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/tomato-tomato-hornworm-1L-396x263.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/tomato-tomato-hornworm-1L.jpg 468w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Mature tomato hornworms can reach 3 inches long. They come in various hues of green to gray, but are distinguished from other hornworms by the eight v-shaped stripes running along the length of their bodies and a black horn on their rear end. The coloration allows these large caterpillars to remain cryptic within the canopy of tomato plants.<br><strong>Photo Source: <\/strong>Michael Bush, WSU Extension, Yakima, WA<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/tomato-tomato-hornworm-2l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/tomato-tomato-hornworm-2L-396x300.jpg\" alt=\"tomato hornworm-2\" class=\"wp-image-1493\" width=\"198\" height=\"150\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/tomato-tomato-hornworm-2L-396x300.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/tomato-tomato-hornworm-2L.jpg 468w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Tomato hornworm is a plant defoliator feeding on entire leaves, small stems, and even parts of immature fruit. Often this defoliation is first noticed near the end of the growing season (August or early September) when the hornworm is approaching maturity.<br><strong>Photo Source: <\/strong>Michael Bush, WSU Extension, Yakima, WA<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/tomato-tomato-hornworm-3l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/tomato-tomato-hornworm-3L-396x263.jpg\" alt=\"tomato hornworm on ground\" class=\"wp-image-1494\" width=\"198\" height=\"132\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/tomato-tomato-hornworm-3L-396x263.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/tomato-tomato-hornworm-3L.jpg 468w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">The tomato hornworm has one generation per year and overwinters as a pupa in the soil. Adults will emerge in the spring.<br><strong>Photo Source: <\/strong>Michael Bush, WSU Extension, Yakima, WA<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/tomato-tomato-hornworm-4l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/tomato-tomato-hornworm-4L-396x263.jpg\" alt=\"measuring tomato hornworm adult's size\" class=\"wp-image-1491\" width=\"198\" height=\"132\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/tomato-tomato-hornworm-4L-396x263.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/tomato-tomato-hornworm-4L.jpg 468w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">The tomato hornworm adult is a large (3.5 to 5.25-inch wingspan) moth known as the five-spotted hawk moth for the five pairs of orange spots on the abdomen. The adult is rarely encountered by growers and home gardeners as it tends to fly around dusk.<br><strong>Photo Source: <\/strong>Michael Bush, WSU Extension, Yakima, WA<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/uspest.org\/pnw\/insects\">Pacific Northwest Insect Management Handbook<\/a>. Washington State Chapter: Vegetables, Section: Tomato Part2: Fleabeetle to Wireworm.<\/li>\n\n\n\n<li><a href=\"https:\/\/hortsense.cahnrs.wsu.edu\/fact-sheet\/tomato-tomato-hornworm\/\">Vegetables: Tomato: Tomato hornworm<\/a>. Washington State University Hortsense.<\/li>\n\n\n\n<li><a href=\"https:\/\/www2.ipm.ucanr.edu\/agriculture\/tomato\/hornworms\/\">UC Pest Management Guidelines: Tomato Hornworms<\/a>. UC IPM Online, University of California.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Tuberworm\">Tuberworm<\/h3>\n\n\n\n<p><strong>Common Name<\/strong>:&nbsp;Tuberworm<br><strong>Latin binomial<\/strong>:&nbsp;<i>Phthorimaea operculella<\/i><\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-tuberworm-1l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-tuberworm-1L.jpg\" alt=\"Adult tuberworm\" class=\"wp-image-2696\" width=\"198\" height=\"149\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-tuberworm-1L.jpg 800w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-tuberworm-1L-396x297.jpg 396w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Tuberworm adults. Female on left, male on right.<br><strong>Photo Source: <\/strong>Silvia Rondon<\/figcaption><\/figure><\/div>\n\n\n<figure class=\"wp-block-image alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-tuberworm-5l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-tuberworm-5L-396x263.jpg\" alt=\"tuberworm larva on a potato\" class=\"wp-image-2700\" width=\"198\" height=\"132\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-tuberworm-5L-396x263.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-tuberworm-5L.jpg 800w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Tuberworm larva.<br><strong>\nPhoto Source: <\/strong>Lynn Ketchum<\/figcaption><\/figure>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-tuberworm-2l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-tuberworm-2L-396x264.jpg\" alt=\"tuberworm damage on potato\" class=\"wp-image-2697\" width=\"198\" height=\"132\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-tuberworm-2L-396x264.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-tuberworm-2L.jpg 800w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Potato tuberworm larval damage to potato tubers.<br><strong>Photo Source: <\/strong>Silvia Rondon<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-tuberworm-3l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-tuberworm-3L-396x264.jpg\" alt=\"damaged potato by tuberworm\" class=\"wp-image-2698\" width=\"198\" height=\"132\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-tuberworm-3L-396x264.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-tuberworm-3L.jpg 800w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Potato tuberworm larval damage to potato tubers.<br><strong>Photo Source: <\/strong>Silvia Rondon<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-tuberworm-4l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-tuberworm-4L.jpg\" alt=\"potato got effected by tuberworm\" class=\"wp-image-2699\" width=\"198\" height=\"149\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-tuberworm-4L.jpg 800w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-tuberworm-4L-396x297.jpg 396w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Potato tuberworm larval damage to potato tubers.<br><strong>Photo Source: <\/strong>Silvia Rondon<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/pubs.extension.wsu.edu\/biology-and-management-of-the-potato-tuberworm-in-the-pacific-northwest\">Biology and Management of the Potato Tuberworm in the Pacific Northwest<\/a>. PNW 594.<\/li>\n\n\n\n<li>New Emerging Pests in the Pacific Northwest. The Potato Association of America.<\/li>\n\n\n\n<li><a href=\"https:\/\/uspest.org\/pnw\/insects\">Pacific Northwest Insect Management Handbook<\/a>. Chapter: Irish Potatoes, Section: Tuberworm to Wireworm.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"thrips\">Western flower thrips<\/h3>\n\n\n\n<p class=\"wsu-max-width--hero\"><strong>Common Name<\/strong>:&nbsp;Western flower thrips<br><strong>Latin binomial<\/strong>:&nbsp;<i>Frankliniella occidentalis<\/i>.<br><strong>Host Crops<\/strong>:&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/basil\/#Thrips\">Basil<\/a>&nbsp;, <a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/brassicaceae\/broccoli\/#Western\">Broccoli<\/a>,&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/cabbage\/#Western\">Cabbage<\/a>,&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/brassicaceae\/cauliflower\/#Western\">Cauliflower<\/a>,&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/cucurbits\/cucumber\/#Western\">Cucumber<\/a>,&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/onion-allium\/#Thrips\">Onion<\/a>,&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/cucurbits\/pumpkin\/#thrips\">Pumpkin<\/a>,&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/cucurbits\/squash\/#thrips\">Squash<\/a>,&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/tomato\/#thrips\">Tomato<\/a>&nbsp;and&nbsp;<br><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/cucurbits\/watermelon\/#thrips\">Watermelon<\/a>.<\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-full is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-thrips-2l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-thrips-2L.jpg\" alt=\"thrips-1\" class=\"wp-image-2701\" width=\"198\" height=\"155\" \/><\/a><figcaption class=\"wp-element-caption\">Closeup of thrips.<br><strong>\nPhoto Source: <\/strong>Silvia Rondon<\/figcaption><\/figure>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-thrips-1l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-thrips-1L-396x265.jpg\" alt=\"thrips-2\" class=\"wp-image-2702\" width=\"198\" height=\"133\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-thrips-1L-396x265.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-thrips-1L.jpg 800w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Thrips damage on potato leaf.<br><strong>\nPhoto Source: <\/strong>Silvia Rondon<\/figcaption><\/figure>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/uspest.org\/pnw\/insects\">Pacific Northwest Insect Management Handbook<\/a>. Chapter: Irish Potatoes, Section: Lygus bug to Thrips.<\/li>\n\n\n\n<li>See&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/diseases-pests-and-other-problems-common-to-many-vegetables\/#thrips\">Diseases, pests, and other problems common to many vegetables: Western flower thrips<\/a>.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Wireworm\">Wireworm<\/h3>\n\n\n\n<p class=\"wsu-max-width--hero\"><strong>Common Name(of damaging stage)<\/strong>:&nbsp;Wireworm<br><strong>Latin binomial<\/strong>: Pictured are&nbsp;<i>Limonius<\/i>&nbsp;spp. (including&nbsp;<i>L. canus<\/i>&nbsp;and&nbsp;<i>L. californicus<\/i>). Other wireworm species including&nbsp;<i>Agriotes<\/i>&nbsp;spp. and&nbsp;<i>Ctenicera<\/i>&nbsp;spp. can be pestiferous.<br><strong>Host Crops<\/strong>: Potato,&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/onion-allium\/#Wireworm\">onion<\/a>,&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/carrot\/#Wireworm\">carrot<\/a>, beet,&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/spinach\/#Wireworm\">spinach seed crops<\/a>&nbsp;and radish. Other crops, like corn,&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/bean\/#Wireworm\">beans<\/a>&nbsp;and peas can be impacted by high densities of wireworms feeding on seedlings resulting in poor crop stands.<\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-wireworm1l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-wireworm1L-396x326.jpg\" alt=\"wireworm adult\" class=\"wp-image-567\" width=\"198\" height=\"163\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-wireworm1L-396x326.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-wireworm1L.jpg 467w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Adult wireworm is commonly known as a click beetle. Beetle size 3\/8 to 1\/2 inch (8\u201312 mm).<br><strong>Photo Source: <\/strong>David Horton, USDA-ARS, Wapato<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-wireworm2l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-wireworm2L-396x296.jpg\" alt=\"dark orange wireworm larva\" class=\"wp-image-568\" width=\"198\" height=\"148\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-wireworm2L-396x296.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-wireworm2L.jpg 600w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Wireworm larva is dark orange or brown and mature larvae are 3\/8 to 1\/2 inch in length.<br><strong>Photo Source: <\/strong>David Horton, USDA-ARS, Wapato<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-wireworm3l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-wireworm3L.jpg\" alt=\"monitoring wireworm density\" class=\"wp-image-569\" width=\"198\" height=\"149\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-wireworm3L.jpg 400w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-wireworm3L-396x297.jpg 396w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Wireworm larvae density can be monitored with oatmeal bait.<br><strong>Photo Source: <\/strong>David Horton, USDA-ARS, Wapato<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-wireworm4l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-wireworm4L.jpg\" alt=\"damaged potato caused by wireworm\" class=\"wp-image-2704\" width=\"198\" height=\"149\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-wireworm4L.jpg 600w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-wireworm4L-396x297.jpg 396w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Wireworm damage to potato tuber visible as &lt;1\/16 inch holes that lead to tunnels beneath the surface.<br><strong>Photo Source: <\/strong>Andy Jensen, WA Potato Commission<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n<\/div>\n\n<div class=\"wsu-row wsu-row--thirds\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/wireworm-clickbeetle-1l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/wireworm-clickbeetle-1L-396x667.jpg\" alt=\"click beetle-1\" class=\"wp-image-573\" width=\"99\" height=\"167\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/wireworm-clickbeetle-1L-396x667.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/wireworm-clickbeetle-1L.jpg 505w\" sizes=\"(max-width: 99px) 100vw, 99px\" \/><\/a><figcaption class=\"wp-element-caption\">A click beetle of the species <i>Agriotes obscurus<\/i>, the larvae of which are wireworms.<br><strong>Photo Source: <\/strong>Oregon State University \u2013<a href=\"https:\/\/osac.science.oregonstate.edu\">Oregon State Arthropod Collection<\/a>.<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-large is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/wireworm-clickbeetle-2l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/wireworm-clickbeetle-2L.jpg\" alt=\"click beetle-2\" class=\"wp-image-571\" width=\"118\" height=\"213\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/wireworm-clickbeetle-2L.jpg 472w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/wireworm-clickbeetle-2L-396x713.jpg 396w\" sizes=\"(max-width: 118px) 100vw, 118px\" \/><\/a><figcaption class=\"wp-element-caption\">A click beetle of the species <i>Limonius californicus<\/i>, the larvae of which are wireworms.<br><strong>Photo Source: <\/strong>Oregon State University \u2013 <a href=\"https:\/\/osac.science.oregonstate.edu\">Oregon State Arthropod Collection<\/a>.<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-large is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/wireworm-clickbeetle-3l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/wireworm-clickbeetle-3L.jpg\" alt=\"click beetle-3\" class=\"wp-image-572\" width=\"121\" height=\"213\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/wireworm-clickbeetle-3L.jpg 484w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/wireworm-clickbeetle-3L-396x695.jpg 396w\" sizes=\"(max-width: 121px) 100vw, 121px\" \/><\/a><figcaption class=\"wp-element-caption\">A click beetle of the species <i>Limonius canus<\/i>, the larvae of which are wireworms.<br><strong>Photo Source: <\/strong>Oregon State University \u2013 <a href=\"https:\/\/osac.science.oregonstate.edu\">Oregon State Arthropod Collection<\/a>.<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/ippc2.orst.edu\/potato\/wireworms.pdf\">WIREWORMS Coleoptera: Elateridae, Pacific Coast Wireworm&nbsp;<i>Limonius canus<\/i>, Sugarbeet Wireworm&nbsp;<i>L. californicus<\/i>, Great Basin Wireworm&nbsp;<i>Ctenicera pruinina (pdf)<\/i><\/a>. Integrated Plant Protection Center of Oregon State University.<\/li>\n\n\n\n<li><a href=\"https:\/\/catalog.extension.oregonstate.edu\/pnw607\">Wireworm Biology and Nonchemical Management in Potatoes in the Pacific Northwest<\/a>. Extension Bulletin PNW 607.<\/li>\n\n\n\n<li><a href=\"https:\/\/uspest.org\/pnw\/insects\">Pacific Northwest Insect Management Handbook<\/a>. Chapter: Irish Potatoes, Section: Tuberworm to Wireworm.<\/li>\n\n\n\n<li><a href=\"https:\/\/s3.wp.wsu.edu\/uploads\/sites\/2723\/2021\/06\/wireworm_syngenta_booklet_2010_web.pdf\">Wireworm Field Guide (pdf)<\/a>&nbsp;&#8211; A guide to the identification and control of wireworms, Syngenta Crop Protection Canada, Inc.<\/li>\n\n\n\n<li><a href=\"https:\/\/pubs.extension.wsu.edu\/wireworm-biology-and-nonchemical-management-in-potatoes-in-the-pacific-northwest\">Wireworm Biology and Nonchemical Management in Potatoes in the Pacific Northwest<\/a>, N. Andrews, M. Ambrosino, G. Fisher, and S.I. Rondon, Pacific Northwest Extension Publication no. PNW607<\/li>\n\n\n\n<li>See&nbsp;<a href=\"http:\/\/stage.web.wsu.edu\/path-team\/diseases-pests-and-other-problems-common-to-many-vegetables\/#Wireworm\">Diseases, pests, and other problems common to many vegetables: Wireworm<\/a>.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-centered\" id=\"Abiotic\">Abiotic Problems Common to Potato<\/h2>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"herbicide\">2,4-D herbicide drift injury<\/h3>\n\n\n\n<p class=\"collapse_bottom\"><b>Common name<\/b>: 2,4-D herbicide drift injury<br><b>Cause<\/b>: Drift of the broadleaf herbicide 2,4-D into potato crops.<br><b>Host Crops<\/b>: Most broadleaf plants are susceptible to injury by 2,4-D.<\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-2-4-d-drift-1l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-2-4-d-drift-1L-rotated-1-396x296.jpg\" alt=\"potato-2-4-d-drift-\" class=\"wp-image-2707\" width=\"198\" height=\"148\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-2-4-d-drift-1L-rotated-1-396x296.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-2-4-d-drift-1L-rotated-1.jpg 640w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Symptoms of injury from drift of the herbicide 2,4-D into a potato crop.<br><strong>\nPhoto Source: <\/strong>Carrie H. Wohleb, Washington State University<\/figcaption><\/figure>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-2-4-d-drift-2l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-2-4-d-drift-2L-rotated-1-396x530.jpg\" alt=\"potato herbicide injury\" class=\"wp-image-2708\" width=\"198\" height=\"265\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-2-4-d-drift-2L-rotated-1-396x530.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-2-4-d-drift-2L-rotated-1.jpg 478w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Symptoms of injury from drift of the herbicide 2,4-D into a potato crop.<br><strong>\nPhoto Source: <\/strong>Carrie H. Wohleb, Washington State University<\/figcaption><\/figure>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>Online Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/www.extension.purdue.edu\/extmedia\/id\/id-453-w.pdf\">2,4-D- and Dicamba-tolerant Crops\u2014 Some Facts to Consider (pdf)<\/a>.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Herbicidecarryover\">Herbicide carryover in potato seed<\/h3>\n\n\n\n<p><strong>Problem<\/strong>: Herbicide carryover in potato seed<br><strong>Crops affected<\/strong>: Most, if not all, crops can be affected by herbicides used to control weeds.<\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-full is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-herbicide-carryover-1l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-herbicide-carryover-1L.jpg\" alt=\"excessive sprouting caused by carrover on potato seed\" class=\"wp-image-2709\" width=\"228\" height=\"227\" \/><\/a><figcaption class=\"wp-element-caption\">Excessive sprouting caused by herbicide carryover on potato seed.<br><strong>Photo Source: <\/strong>Carrie Wohleb, WSU<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-full is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-herbicide-carryover-2l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-herbicide-carryover-2L.jpg\" alt=\"Potato field having blank areas in a field\" class=\"wp-image-2710\" width=\"183\" height=\"235\" \/><\/a><figcaption class=\"wp-element-caption\">Blank areas in a field due to herbicide carryover on potato seed tubers. Rows on the right are plants from seed not contaminated with herbicide.<br><strong>Photo Source: <\/strong>Carrie Wohleb, WSU<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-herbicide-carryover-3l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-herbicide-carryover-3L-396x454.jpg\" alt=\"excessive root production on potato\" class=\"wp-image-2711\" width=\"198\" height=\"227\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-herbicide-carryover-3L-396x454.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-herbicide-carryover-3L.jpg 443w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Potato sprouts branching underground (arrow) and excessive root production caused by herbicide carryover on the seed tubers<br><strong>Photo Source: <\/strong>Carrie Wohleb, WSU<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-herbicide-carryover-4l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/Potato-herbicide-carryover-4L.jpg\" alt=\"stunted potato plant by herbicide-carryover\" class=\"wp-image-2712\" width=\"198\" height=\"163\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/Potato-herbicide-carryover-4L.jpg 644w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/Potato-herbicide-carryover-4L-396x325.jpg 396w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Stunted potato plant with deformed leaves due to herbicide carry-over on seed.<br><strong>Photo Source: <\/strong>Carrie Wohleb, WSU<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/s3.wp.wsu.edu\/uploads\/sites\/2723\/2021\/08\/Case-study-4b-Herbicide-carryover-in-potato-seed.pdf\">Herbicide Carryover in Potato Seed (pdf)<\/a>. Identification &amp; Management of Emerging Vegetable Problems in the Pacific Northwest, Pacific Northwest Vegetable Extension Group.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Airpollution\">Air pollution or ozone injury<\/h3>\n\n\n\n<p class=\"wsu-max-width--hero\"><b>Common name<\/b>: Air pollution or ozone injury<br><b>Cause<\/b>: During very hot conditions, combined with the presence of excessive air particulate matter, e.g., from wildfires, symptoms of air pollution and\/or ozone injury have been observed in center-pivot irrigated potato crops east of the Cascade Mountains in the Pacific Northwest USA.<br><b>Host Crops<\/b>: Potato and other vegetables, e.g., bean and corn.<\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-full is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-ozone-injury-1l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-ozone-injury-1L-rotated-1.jpg\" alt=\"Potato-ozone-injury\" class=\"wp-image-2715\" width=\"120\" height=\"160\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-ozone-injury-1L-rotated-1.jpg 478w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-ozone-injury-1L-rotated-1-396x530.jpg 396w\" sizes=\"(max-width: 120px) 100vw, 120px\" \/><\/a><figcaption class=\"wp-element-caption\">Possible symptoms of ozone or air pollution injury to potato crops.<br><strong>\nPhoto Source: <\/strong>Carrie H. Wohleb, Washington State University Extension<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image alignleft size-full is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-ozone-injury-5l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-ozone-injury-5L-rotated-1.jpg\" alt=\"symptoms of ozone-injury on a potato plant\" class=\"wp-image-2719\" width=\"120\" height=\"125\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-ozone-injury-5L-rotated-1.jpg 478w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-ozone-injury-5L-rotated-1-396x415.jpg 396w\" sizes=\"(max-width: 120px) 100vw, 120px\" \/><\/a><figcaption class=\"wp-element-caption\">Possible symptoms of ozone or air pollution injury to potato crops.<br><strong>\nPhoto Source: <\/strong>Carrie H. Wohleb, Washington State University Extension<\/figcaption><\/figure>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-full is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-ozone-injury-2l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-ozone-injury-2L-rotated-1.jpg\" alt=\"symptoms of Potato-ozone-injury\" class=\"wp-image-2716\" width=\"160\" height=\"120\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-ozone-injury-2L-rotated-1.jpg 640w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-ozone-injury-2L-rotated-1-396x296.jpg 396w\" sizes=\"(max-width: 160px) 100vw, 160px\" \/><\/a><figcaption class=\"wp-element-caption\">Possible symptoms of ozone or air pollution injury to potato crops.<br><strong>\nPhoto Source: <\/strong>Carrie H. Wohleb, Washington State University Extension<\/figcaption><\/figure>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-full is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-ozone-injury-3l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-ozone-injury-3L-rotated-1.jpg\" alt=\"Potato-ozone-injury to potato crop\" class=\"wp-image-2717\" width=\"120\" height=\"160\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-ozone-injury-3L-rotated-1.jpg 478w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-ozone-injury-3L-rotated-1-396x530.jpg 396w\" sizes=\"(max-width: 120px) 100vw, 120px\" \/><\/a><figcaption class=\"wp-element-caption\">Possible symptoms of ozone or air pollution injury to potato crops.<br><strong>\nPhoto Source: <\/strong>Carrie H. Wohleb, Washington State University Extension<\/figcaption><\/figure>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-full is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-ozone-injury-4l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-ozone-injury-4L-rotated-1.jpg\" alt=\"Potato-ozone-injury symptoms\" class=\"wp-image-2718\" width=\"120\" height=\"160\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-ozone-injury-4L-rotated-1.jpg 478w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-ozone-injury-4L-rotated-1-396x530.jpg 396w\" sizes=\"(max-width: 120px) 100vw, 120px\" \/><\/a><figcaption class=\"wp-element-caption\">Possible symptoms of ozone or air pollution injury to potato crops.<br><strong>\nPhoto Source: <\/strong>Carrie H. Wohleb, Washington State University Extension<\/figcaption><\/figure>\n\n<\/div>\r\n\n<\/div>\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Herbicideinjury\">Herbicide injury<\/h3>\n\n\n\n<p class=\"wsu-max-width--hero\"><b>Common name<\/b>: Herbicide injury<br><b>Cause<\/b>: Accidental exposure of potato to the herbicides Goal (oxyfluorfen) and Buctril (bromoxynil) applied by chemigation to an adjacent onion crop.<br><b>Host Crops<\/b>: Most broadleaf plants are susceptible to injury by the herbicides Goal and Buctril.<\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/herbicide-goal-buctril-l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/herbicide-Goal-Buctril-L-396x585.jpg\" alt=\"Herbicide-damaged potato leaves\" class=\"wp-image-2713\" width=\"198\" height=\"293\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/herbicide-Goal-Buctril-L-396x585.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/herbicide-Goal-Buctril-L.jpg 1012w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Potato plant injured after accidental exposure to the herbicides Goal (oxyfluorfen) and Buctril (bromoxynil) applied by chemigation to an adjacent onion crop.<br>\n<strong>Photo Source: <\/strong>Tim Waters, Washington State University<\/figcaption><\/figure>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n<\/div>\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Physiological\">Physiological leaf roll<\/h3>\n\n\n\n<p><strong>Problem<\/strong>:&nbsp;Physiological leaf roll<br><strong>Cause<\/strong>:&nbsp;Various environmental conditions and management practices<br><strong>Crops affected<\/strong>:&nbsp;<a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/photo-gallery-of-vegetable-problems\/tomato\/#Physiological\">Tomato<\/a>&nbsp;and Potato.<\/p>\n\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/s3.wp.wsu.edu\/uploads\/sites\/2723\/2021\/08\/Case-Study-9-Leaf-roll-tomato-potato.pdf\">Physiological Leaf Roll of Tomato\/Potato (pdf)<\/a>, Identification &amp; Management of Emerging Vegetable Problems in the Pacific Northwest. Pacific Northwest Vegetable Extension Group.<\/li>\n\n\n\n<li><a href=\"https:\/\/s3.wp.wsu.edu\/uploads\/sites\/2723\/2021\/08\/PhysiologicalLeafRollOfTomato-PNW_VEG_FactSheet.pdf\">Physiological Leaf Roll of Tomato (pdf)<\/a>,&nbsp;A Fact Sheet prepared by The Pacific Northwest Vegetable Extension Group.<\/li>\n<\/ul>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-full\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/plr1l\/\"><img decoding=\"async\" loading=\"lazy\" width=\"185\" height=\"278\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/plr1L.jpg\" alt=\"Physiological leaf roll on tomato\" class=\"wp-image-2720\" \/><\/a><figcaption class=\"wp-element-caption\"><strong>Photo Source: <\/strong>PNW VEG members<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-full\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/plr2l\/\"><img decoding=\"async\" loading=\"lazy\" width=\"151\" height=\"278\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/plr2L.jpg\" alt=\"Tomato Physiological leaf roll\" class=\"wp-image-2721\" \/><\/a><figcaption class=\"wp-element-caption\"><strong>Photo Source: <\/strong>PNW VEG members<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-full\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/plr3l\/\"><img decoding=\"async\" loading=\"lazy\" width=\"163\" height=\"278\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/plr3L.jpg\" alt=\"Physiological leaf roll symptoms\" class=\"wp-image-2722\" \/><\/a><figcaption class=\"wp-element-caption\"><strong>Photo Source: <\/strong>PNW VEG members<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n<\/div>\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-vineyard\" id=\"Toxic\">Toxic seed piece syndrome<\/h3>\n\n\n\n<p><strong>Problem<\/strong>:&nbsp;Toxic seed piece syndrome<br><strong>Crop affected<\/strong>: Potato<\/p>\n\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-toxic-seed-piece-syndrome-1l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-toxic-seed-piece-syndrome-1L-396x293.jpg\" alt=\"infected Potato seed\" class=\"wp-image-2723\" width=\"198\" height=\"147\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-toxic-seed-piece-syndrome-1L-396x293.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-toxic-seed-piece-syndrome-1L.jpg 470w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">A typical potato seed piece associated with TSPS.<br><strong>Photo Source: <\/strong>Phil Hamm, OSU<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-toxic-seed-piece-syndrome-2l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-toxic-seed-piece-syndrome-2L-396x240.jpg\" alt=\"potato-toxic-seed-piece-syndrome symptoms\" class=\"wp-image-2724\" width=\"198\" height=\"120\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-toxic-seed-piece-syndrome-2L-396x240.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-toxic-seed-piece-syndrome-2L.jpg 581w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Remnant of a potato seed piece still attached to the stem.<br><strong>Photo Source: <\/strong>Carrie Wohleb, WSU<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-full is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-toxic-seed-piece-syndrome-3l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-toxic-seed-piece-syndrome-3L.jpg\" alt=\"discolored potato plant stem\" class=\"wp-image-2725\" width=\"106\" height=\"236\" \/><\/a><figcaption class=\"wp-element-caption\">Vascular discoloration in the potato stem just above where the seed piece was attached.<br><strong>Photo Source: <\/strong>Phil Hamm, OSU<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-medium is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-toxic-seed-piece-syndrome-4l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-toxic-seed-piece-syndrome-4L-396x296.jpg\" alt=\"discolored potato leaves\" class=\"wp-image-2726\" width=\"198\" height=\"148\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-toxic-seed-piece-syndrome-4L-396x296.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-toxic-seed-piece-syndrome-4L.jpg 526w\" sizes=\"(max-width: 198px) 100vw, 198px\" \/><\/a><figcaption class=\"wp-element-caption\">Potato leaves showing interveinal chlorosis and bronzing.<br><strong>Photo Source: <\/strong>Carrie Wohleb, WSU<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n<\/div>\n\n<div class=\"wsu-row wsu-row--quarters\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-full is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-toxic-seed-piece-syndrome-5l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-toxic-seed-piece-syndrome-5L.jpg\" alt=\"symptomatic potato plant showing wilting symptoms\" class=\"wp-image-2727\" width=\"106\" height=\"197\" \/><\/a><figcaption class=\"wp-element-caption\">Potato leaves showing interveinal chlorosis and bronzing.<br><strong>Photo Source: <\/strong>Carrie Wohleb, WSU<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-full is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-toxic-seed-piece-syndrome-6l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-toxic-seed-piece-syndrome-6L.jpg\" alt=\"wilt symptoms on potato plants\" class=\"wp-image-2728\" width=\"185\" height=\"160\" \/><\/a><figcaption class=\"wp-element-caption\">Symptomatic plant showing wilt symptoms.<br><strong>Photo Source: <\/strong>Phil Hamm, OSU<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-full is-resized\"><a href=\"https:\/\/mtvernon.wsu.edu\/path_team\/potato-toxic-seed-piece-syndrome-7l\/\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-toxic-seed-piece-syndrome-7L.jpg\" alt=\"TSPS symptoms of a potato field TSPS symptoms\" class=\"wp-image-2729\" width=\"280\" height=\"117\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-toxic-seed-piece-syndrome-7L.jpg 560w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/31\/potato-toxic-seed-piece-syndrome-7L-396x165.jpg 396w\" sizes=\"(max-width: 280px) 100vw, 280px\" \/><\/a><figcaption class=\"wp-element-caption\">Potato field with several plants showing TSPS symptoms.<br><strong>Photo Source: <\/strong>Carrie Wohleb, WSU<\/figcaption><\/figure><\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n<\/div>\r\n\n<\/div>\n\n\n<p><strong>On-Line Resources<\/strong>:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/s3.wp.wsu.edu\/uploads\/sites\/2723\/2021\/08\/Case-study-5-Toxic-Seed-Piece.pdf\">Toxic Seed Piece Syndrome (TSPS) (pdf)<\/a>. Identification &amp; Management of Emerging Vegetable Problems in the Pacific Northwest, Pacific Northwest Vegetable Extension Group.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"#home\">Return to the Top<\/a><\/p>\n\n\n<div class=\"wsu-callout  wsu-border--add-top\" >\r\n        \n<div class=\"wsu-note\">\n\t\n\t\t\t<div class=\"wsu-note__title\">\n\t\t\tPDF Accessibility\t\t<\/div>\n\t\t\n\t\n\n<p class=\"wsu-max-width--hero\">If you need the content provided on this site in an alternate format or for further information on the Vegetable Seed Pathology program, <\/p>\n\n\n\n<p class=\"wsu-max-width--hero\">please contact:&nbsp;<strong>Lindsey du Toit at&nbsp;<a href=\"mailto:dutoit@wsu.edu\">dutoit@wsu.edu<\/a>&nbsp;or at 360-848-6140<\/strong>.<\/p>\n\n<\/div>\n\n<\/div>\r\n\n\n<section  class=\"wsu-section wsu-width--full\"  >\r\n    <div class=\"wsu-section__inner wsu-width--content\">    \n\n<p class=\"wsu-max-width--hero wsu-spacing-after--none wsu-spacing-bottom--none wsu-spacing-before--default\">Our pages provide links to external sites for the convenience of users. WSU Extension does not manage these external sites, nor does Extension review, control, or take responsibility for the content of these sites. These external sites do not implicitly or explicitly represent official positions and policies of WSU Extension.<\/p>\n\n    <\/div><\/section>","protected":false},"excerpt":{"rendered":"<p>[action label=&quot;Insect\/Mite Pests&quot; link=&quot;https:\/\/stage.web.wsu.edu\/path-team\/photo-gallery-of-vegetable-problems\/potato\/#Insect\/Mite Pests&quot; style=&quot;in-page-action&quot; ]DiseasesAster yellows Bacterial soft rot Black dot Black leg Black scurf Corky ring spot Curly top Early blight Early dying ErwiniaNematodes Root knotInsect\/Mite PestsFusarium Dry Rot Late Blight Leaf&amp;hellip;<\/p>\n","protected":false},"author":4,"featured_media":0,"parent":52,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_expiration_date":""},"categories":[],"tags":[],"_links":{"self":[{"href":"https:\/\/mtvernon.wsu.edu\/path_team\/wp-json\/wp\/v2\/pages\/182"}],"collection":[{"href":"https:\/\/mtvernon.wsu.edu\/path_team\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/mtvernon.wsu.edu\/path_team\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/mtvernon.wsu.edu\/path_team\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/mtvernon.wsu.edu\/path_team\/wp-json\/wp\/v2\/comments?post=182"}],"version-history":[{"count":33,"href":"https:\/\/mtvernon.wsu.edu\/path_team\/wp-json\/wp\/v2\/pages\/182\/revisions"}],"predecessor-version":[{"id":8375,"href":"https:\/\/mtvernon.wsu.edu\/path_team\/wp-json\/wp\/v2\/pages\/182\/revisions\/8375"}],"up":[{"embeddable":true,"href":"https:\/\/mtvernon.wsu.edu\/path_team\/wp-json\/wp\/v2\/pages\/52"}],"wp:attachment":[{"href":"https:\/\/mtvernon.wsu.edu\/path_team\/wp-json\/wp\/v2\/media?parent=182"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mtvernon.wsu.edu\/path_team\/wp-json\/wp\/v2\/categories?post=182"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mtvernon.wsu.edu\/path_team\/wp-json\/wp\/v2\/tags?post=182"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}