{"id":3233,"date":"2021-11-13T15:36:18","date_gmt":"2021-11-13T23:36:18","guid":{"rendered":"http:\/\/stage.web.wsu.edu\/path-team\/?page_id=3233"},"modified":"2024-05-09T11:12:29","modified_gmt":"2024-05-09T18:12:29","slug":"june-2005-newsletter","status":"publish","type":"page","link":"https:\/\/mtvernon.wsu.edu\/path_team\/june-2005-newsletter\/","title":{"rendered":"June 2005 Newsletter"},"content":{"rendered":"<div class=\"wsu-row wsu-row--sidebar-right\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<p>Lindsey du Toit and Debra Inglis, editors<br>WSU Mount Vernon NWREC<br>16650 State Rte 536, Mount Vernon, WA 98273-4768<br>360-848-6140 (tel), 360-848-6159 (fax)<\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n<div class=\"wsu-cta  wsu-cta--width-full\" >\n\t<a \t\t\t\t\thref=\"https:\/\/mtvernon.wsu.edu\/path_team\/team-newsletter-archives\/\"\t\n\t\tclass=\"wsu-button \">\n\t\t\t\n\t\tNewsletter Archives \t\t\t<\/a>\n<\/div>\n\n<\/div>\r\n\n<\/div>\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">WSU Vegetable Pathology Team Newsletter<\/h2>\n\n\n\n<h2 class=\"wp-block-heading\">In this Issue<\/h2>\n\n\n\n<ul>\n<li><a href=\"#GREET\">Greetings &amp; welcome to new Team members<\/a><\/li>\n\n\n\n<li><a href=\"#EVENTS\">Vegetable events &amp; resources<\/a><\/li>\n\n\n\n<li><a href=\"#CARVY\">California Fresh Carrot Advisory Board expresses concern over&nbsp;<i>Carrot virus Y<\/i>&nbsp;(CarVY), a new disease in Australia<\/a><\/li>\n\n\n\n<li><a href=\"#PUBLICATIONS\">Recent vegetable publications of WSU Vegetable Pathology Team members<\/a><\/li>\n<\/ul>\n\n\n\n<h2 class=\"has-text-align-center wp-block-heading\" id=\"GREET\">Greetings &amp; Welcome to New Team Members!<\/h2>\n\n\n\n<p class=\"wsu-max-width--hero\">Welcome to the June 2005 newsletter of the WSU Vegetable Pathology Team! We hope you are having a productive season. We start this vegetable season feeling the loss of the tremendous expertise and skills of several extension educators who were members of the Team until they each retired in the past year: Dyvon Havens from Skagit Co., Gary Pelter from Grant and Adams Counties, and Erik Sorensen from Franklin Co. However, we are very pleased to introduce 5 new Team members who bring valuable expertise to our program:<\/p>\n\n\n\n<ul>\n<li><strong>Dr. Richard Larson<\/strong>:&nbsp;Rich is a USDA&nbsp;<b>virologist<\/b>&nbsp;located at WSU Prosser IAREC. Rich\u2019s program is focused on viruses of&nbsp;<b>legume crops<\/b>&nbsp;using both applied and molecular technology, and virus resistance in common bean. Rich also conducts research on soilborne diseasesof forage crops, including identification of resistance sources using real-time PCR. Rich can be contacted at&nbsp;<a href=\"mailto:rlarsen@pars.ars.usda.gov\">rlarsen@pars.ars.usda.gov<\/a>&nbsp;or 509-786-9259<\/li>\n\n\n\n<li><strong>Dr. Mark Pavek<\/strong>:&nbsp;Mark was hired by WSU in 2004 as an extension\/research&nbsp;<strong>horticulturalist<\/strong>&nbsp;located at WSU Pullman, and has responsibilities for&nbsp;<strong>potatoes and vegetable crops<\/strong>. Mark completed his BS degrees in plant science and ag. economics &amp; agribusiness at the University of Idaho, followed by an MS degree in plant science at the same institute. Mark completed his PhD degree in horticulture at WSU with his dissertation on potato agronomy. Mark has worked as Assistant Farm Manager for SSI Land &amp; Cattle in Idaho, Product Development Assistant for Syngenta\/Zeneca in Idaho, and PNW Field Research Manager for NatureMark Potatoes, a division of Monsanto. Mark brings experience in 11 years of commercial farming, 18 years of applied ag-research, and 7 years extension. Mark currently serves as chair of the Western Regional Potato Variety Development Team (WERA-27), University Advisor Board Member for the Pacific Northwest Vegetable Assoc., and is involved with the Potato Association of America. Mark can be contacted at&nbsp;<a href=\"mailto:mjpavek@wsu.edu\">mjpavek@wsu.edu<\/a>&nbsp;or 509-335-6861. See the <a href=\"https:\/\/potatoes.wsu.edu\/\">WSU potato website<\/a>.<\/li>\n\n\n\n<li><strong>Dr. Lyndon Porter<\/strong>:&nbsp;Lyndon was hired as the USDA&nbsp;<strong>legume pathologist<\/strong>&nbsp;located at WSU Prosser IAREC in 2004, having completed his PhD in plant pathology at WSU. Lyndon\u2019s program conducts basic and applied research on the nature, cause, and control of soilborne diseases of edible legumes. The program investigates host-pathogen relations and disease interactions of significance in edible legumes, provides research on pea diseases in the Pacific Northwest and expertise on soil fungal interactions with other disease and non-disease organisms, and develops new methods and techniques to study resistance to soilborne diseases, pathogen variability, germplasm development and improvement, pest management practices, and the use of beneficial organisms to improve edible legume yield and quality. Lyndon can be contacted at&nbsp;<a href=\"mailto:lporter@pars.ars.usda.gov\">lporter@pars.ars.usda.gov<\/a>&nbsp;or 509-786-9237.<\/li>\n\n\n\n<li><img decoding=\"async\" loading=\"lazy\" width=\"194\" height=\"166\" class=\"alignleft wp-image-3238\" src=\"https:\/\/s3.wp.wsu.edu\/uploads\/sites\/2723\/2021\/11\/Naidu.jpg\" alt=\"Photo of Naidu\"><strong>Dr. Naidu Rayapati<\/strong>:&nbsp;Naidu serves as one of the<strong>&nbsp;virologists<\/strong> at WSU Prosser IAREC (since 2004), with a focus on grape virology, plant virology, biological and molecular aspects of viruses; virus-vector interactions; virus diagnostics; conventional and biotechnological approaches for virus and vector resistance; and international agriculture. Naidu can be contacted at <a href=\"mailto:naidu@mail.prosser.wsu.edu\">naidu@mail.prosser.wsu.edu<\/a>&nbsp;or 509-786-9215.<br><\/li>\n<\/ul>\n\n\n\n<ul>\n<li><img decoding=\"async\" loading=\"lazy\" width=\"155\" height=\"206\" class=\"alignleft wp-image-3239\" src=\"https:\/\/s3.wp.wsu.edu\/uploads\/sites\/2723\/2021\/11\/Katerina.jpg\" alt=\"photo of Katerina\"><strong>Dr. Ekaterini Riga<\/strong>:&nbsp;Katerina is the only&nbsp;<strong>nematologist<\/strong>&nbsp;in WA, with a combination of research, teaching, and extension responsibilities. Katerina\u2019s program is based out of WSU Prosser IAREC, and focuses on the biology, ecology, host-parasite relationships, and management of plant-parasitic nematodes on crops in WA. We appreciate having a nematologist contribute to the Team\u2019s expertise, as we have seen significant nematode problems on vegetable crops in WA. Contact Katerina at&nbsp;<a href=\"mailto:riga@wsu.edu\">riga@wsu.edu<\/a>&nbsp;or 509-786-9256.<br><br><\/li>\n\n\n\n<li><img decoding=\"async\" loading=\"lazy\" width=\"217\" height=\"163\" class=\"alignleft wp-image-3240\" src=\"https:\/\/s3.wp.wsu.edu\/uploads\/sites\/2723\/2021\/11\/MarkTrent.jpg\" alt=\"photo of Mark Trent\"><strong>Mark Trent<\/strong>:&nbsp;As of June 2005, Mark is&nbsp;<strong>extension educator<\/strong>&nbsp;for&nbsp;<strong>Grant &amp; Adams Counties<\/strong>&nbsp;in the Columbia Basin. Mark spent the previous 2 years at the University of Arkansas, running the soybean cultivar trial with Dr. Rick Cartwright. Mark completed his MS degree in plant pathology at Oklahoma State University, investigating white rust of spinach for his MS thesis. During this time, Mark also worked as a field research technician. Mark raised peanuts and cattle in Oklahoma prior to starting his graduate program. Mark\u2019s responsibilities as Extension Educator cover&nbsp;horticultural crops, including potatoes, vegetables, and vegetable seed crops. Mark can be contacted at&nbsp;<a href=\"mailto:trentm@wsu.edu\">trentm@wsu.edu<\/a>&nbsp;or 509-754-2011 ext. 413.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"has-text-align-center wp-block-heading\" id=\"EVENTS\">Vegetable Events &amp; Resources<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Extension publications<\/h3>\n\n\n\n<p class=\"wsu-max-width--hero\"><em><strong>Drought Advisory<\/strong><\/em>: Vegetable Crops, WSU Extension publication EM4830E, might be valuable to growers in 2005 given the drought advisory conditions this season. The bulletin can be ordered from WSU Bulletins, PO Box 645912, Pullman, WA 99164-5912.<\/p>\n\n\n\n<p class=\"wsu-max-width--hero\"><em><strong>Potato Leaf Roll<\/strong><\/em>, WSU Extension publication EB1994E, prepared in 2005 by Dennis Johnson, plant pathologist at WSU Pullman, can be ordered from WSU Bulletins, PO Box 645912, Pullman, WA 99164-5912.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Field days<\/h3>\n\n\n\n<p class=\"wsu-max-width--hero\"><strong>WSU Vegetable Seed Field Day<\/strong>&nbsp;will be held at the WSU-NWREC in Mount Vernon on Thursday,&nbsp;<strong>16<sup>th<\/sup>&nbsp;June<\/strong>&nbsp;from&nbsp;<strong>3 \u2013 6&nbsp;pm<\/strong>. Weed control, disease management, and entomology field trials will be demonstrated. The WSDA has approved 3 pesticide license recertification credits for the field day. For more information contact Lindsey du Toit (<a href=\"mailto:dutoit@wsu.edu\">dutoit@wsu.edu<\/a>&nbsp;or 360-848-6140) or Tim Miller (<a href=\"mailto:twmiller@wsu.edu\">twmiller@wsu.edu<\/a>).<\/p>\n\n\n\n<p class=\"wsu-max-width--hero\"><em><strong>WSU Othello Potato Field Day<\/strong><\/em>&nbsp;will be on&nbsp;<strong>24<sup>th<\/sup>&nbsp;June 2005<\/strong>&nbsp;from&nbsp;<strong>8:30 am \u2013 1:00 pm<\/strong>&nbsp;at the WSU Othello REU. In addition, potato seed lot readings will take place on 7th June and 21st June at WSU Othello REU. For more information contact Mark Pavek at&nbsp;<a href=\"mailto:mjpavek@wsu.edu\">mjpavek@wsu.edu<\/a>&nbsp;or 509-335-686.<\/p>\n\n\n\n<p class=\"wsu-max-width--hero\"><em><strong>The Icebox Watermelon Field Day<\/strong><\/em>&nbsp;will take place on<strong> 24<sup>th<\/sup>&nbsp;August 2005<\/strong> from&nbsp;<strong>2 \u2013 4 pm<\/strong>&nbsp;at the WSU Vancouver REU. For more information contact Carol Miles at&nbsp;<a href=\"mailto:milesc@wsu.edu\">milesc@wsu.edu<\/a>&nbsp;or 360-576-6030 ext. 20.<\/p>\n\n\n\n<p class=\"wsu-max-width--hero\"><em><strong>The WSU Onion Cultivar Field Day<\/strong><\/em>&nbsp;will take place on&nbsp;<strong>26<sup>th<\/sup>&nbsp;August 2005<\/strong>&nbsp;from&nbsp;<strong>9 am \u2013 noon<\/strong>&nbsp;at L&amp;L Farms near Connell, WA. Replicated plots of 49 cultivars will be on display, with research updates on neck rot and&nbsp;iris yellow spot virus. A BBQ will follow, at the Scooteney Reservoir Recreational Area. For more information contact Lindsey du Toit at&nbsp;<a href=\"mailto:dutoit@wsu.edu\">dutoit@wsu.edu<\/a>&nbsp;or 360-848-6140, or Mark Trent at&nbsp;<a href=\"mailto:trentm@wsu.edu\">trentm@wsu.edu<\/a>&nbsp;or 509-754-2011 ext. 413.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Conferences<\/h3>\n\n\n\n<p class=\"wsu-max-width--hero\"><em>31<sup>st<\/sup>&nbsp;International Carrot Conference<\/em>&nbsp;at the Sandman Hotel Montreal in Longueuil, Quebec, Canada on 11-14 September 2005. <\/p>\n\n\n\n<p class=\"wsu-max-width--hero\"><em>Pacific Northwest Vegetable Association Annual Convention &amp; Trade Show<\/em>&nbsp;at the Red Lion Hotel in Pasco, WA on 17\u201318 November 2004. Visit the <a href=\"https:\/\/www.pnva.org\/\">PNVA website<\/a>.<\/p>\n\n\n\n<p class=\"wsu-max-width--hero\"><em>31<sup>st<\/sup>&nbsp;Annual Washington Tilth Producers\u2019 Convention<\/em>&nbsp;on 11\u201313 November 2005 at the Wenatchee Convention Center in Wenatchee, WA. There will be a pre-conference symposium titled \u2018Alternative Energy on the Farm\u2019 on Friday 11th November from 10 am \u2013 5 pm, with keynote speaker Fred Provenza from Utah State University. Call Nancy Allen at 206-442-7620.<\/p>\n\n\n\n<p class=\"wsu-max-width--hero\"><em>Annual meeting of the Western WA Horticulture Association, Puget Sound Seed Growers\u2019 Association, and the Northwest Bulb Growers\u2019<\/em> Association&nbsp;at the Marriott Hotel in SeaTac, WA on 4\u20135 January 2006. <\/p>\n\n\n\n<p class=\"wsu-max-width--hero\"><em>The Organic Seed Conference&nbsp;in <\/em>Troutdale, OR on 10\u201312 January 2006. For more information contact the <a href=\"https:\/\/seedalliance.org\/\">Organic Seed Alliance<\/a> or PO Box 772, Port Townsend, WA 98368 or 360-385-7192.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Digital photography resources<\/h3>\n\n\n\n<p class=\"collapse_bottom\">For helpful hints on digital photography, including taking microscopic images, take a look at the following websites:<\/p>\n\n\n\n<ol type=\"1\">\n<li>UK Plant Pathology webpage \u2018Digital Imaging and Microscope Information\u2019<\/li>\n\n\n\n<li>Richard Drees&#8217; webpage \u2018Digital Imaging for Microscopy\u2019<\/li>\n<\/ol>\n\n\n\n<h2 class=\"has-text-align-center wp-block-heading\" id=\"CARVY\">California Fresh Carrot Advisory Board Expresses Concern over Carrot Virus Y (Carvy), a New Disease in Australia <\/h2>\n\n\n\n<p class=\"wsu-max-width--hero\">In April 2005, the CA Fresh Carrot Advisory Board (CFCAB) released a letter to some Pacific Northwest seed companies expressing concern over a new virus disease of carrots,&nbsp;<strong><em>Carrot virus Y&nbsp;(CarVY)<\/em><\/strong>, which has been detected in Australia since 1997. CarVY has not been found in the US, but the CFCAB stated their concern about the possibility of the virus being introduced into the US, after preliminary research in Australia suggested the possibility the virus might be transmitted from carrot seed at a very low rate. The CFCAB proposed that carrot seed produced in Australia not be accepted into the US unless the seed has been certified to be \u201cfree of CarVY\u201d and the seed lot indexed for the disease. However, Roger Jones, virologist in Western Australia, recently stated in an email correspondence to Lindsey du Toit that&nbsp;\u201c<strong>exhaustive tests involving grow out of many thousands of seedlings from plants infected with the virus and testing the seedlings by ELISA failed to confirm that seed transmission occurs\u201d<\/strong>.<\/p>\n\n\n\n<p class=\"wsu-max-width--hero\">The following is a brief summary of information on CarVY published in Farmnote No. 29\/2003 by the Department of Agriculture, Government of Western Australia (the farmnote, including photos of infected plants.<\/p>\n\n\n\n<p><strong>Distribution<\/strong>: All carrot producing regions of Australia<\/p>\n\n\n\n<p class=\"wsu-max-width--hero\"><strong>Symptoms<\/strong>: Leaf symptoms include a chlorotic mottle, marginal necrosis, increased subdivision of leaflets (feathery appearance to the foliage), and stunting. Root symptoms range from mild (when infection occurs later in the season) to severe (when infection occurs on seedlings up to 6 weeks after germination), and include shortened, stubby, knobby roots that are unmarketable. Mild symptoms may include thinner carrots that are only slightly distorted. The virus has been dubbed \u2018Michelin virus\u2019 because severely infected roots resemble the Michelin man.<\/p>\n\n\n\n<p class=\"wsu-max-width--hero\"><strong>Aphid transmission<\/strong>: CarVY is transmitted non-persistently by aphids, i.e., aphids acquire the virus rapidly when feeding on infected plants, and lose the virus rapidly from their mouthparts after feeding on healthy or non-host plants. Roger Jones and his team in Western Australia have conducted greenhouse tests on the relative ability of different aphid species to transmit the virus. The following colonizing aphid species transmitted the virus, in order of decreasing effectiveness:&nbsp;<em>Myzus persicae<\/em>&nbsp;(green peach aphid),&nbsp;<em>Dysaphis foeniculus<\/em>, <em>Aphis spiraecola, D. apiifolia, Hyadaphis foeniculi, Cavariella aegopodii,<\/em> and&nbsp;<em>H. coriandri<\/em>. Non-colonizing aphid species that transmitted the virus, in order of decreasing effectiveness, included:&nbsp;<em>Lipaphis erysimi, Hyseroneura setariae, Brevicoryne brassicae, Acrthosiphon kondoi, Sitobion miscanthi, Rhopalosiphum maidis,<\/em> and&nbsp;<em>R. padi<\/em>.<\/p>\n\n\n\n<p class=\"wsu-max-width--hero\"><strong>Host range<\/strong>: Narrow \u2013 only carrots have been found infected in the field, but greenhouse studies in Australia have shown that CarVY can infect several other members of the Apiaceae, including anise, Bishop&#8217;s weed, chervil (<em>Anthriscus sylvestris<\/em>), coriander, cumin, dill, and parsnip. CarVY did not infect celery, fennel, parsley, and several related herbs.<\/p>\n\n\n\n<p><strong>Carrot cultivar susceptibility<\/strong>: All carrot cultivars that have been tested in Australia have proven susceptible.<\/p>\n\n\n\n<p class=\"wsu-max-width--hero\"><strong>Seed transmission<\/strong>: As stated above by Roger Jones,&nbsp;\u201c<strong>exhaustive tests involving grow out of many thousands of seedlings from plants infected with the virus and testing the seedlings by ELISA failed to confirm that seed transmission occurs<\/strong>\u201d. The Farmnote states that similar viruses belonging to the same virus family are seedborne at very low levels, but seed transmission of this virus has not been demonstrated.<\/p>\n\n\n\n<p class=\"wsu-max-width--hero\">Management recommendations: In areas where CarVY becomes established, the recommendations for managing the disease include:<\/p>\n\n\n\n<ol type=\"1\">\n<li>Avoid adjacent plantings of carrot, and grow non-host crops between carrot crops;<\/li>\n\n\n\n<li>Destroy volunteer carrots and plow residues into the ground after harvest;<\/li>\n\n\n\n<li>Monitor aphid populations and protect recently-planted carrot crops with approved insecticides if aphids are numberous.<\/li>\n\n\n\n<li>Use a \u201ccarrot-free\u201d period in the growing season (this could be a difficulty in areas with biennial seed crops in the same areas as annual root crops).<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"PUBLICATIONS\">Some Recent Vegetable Publications of WSU Vegetable Pathology Team Members <\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Websites<\/h3>\n\n\n\n<ul>\n<li> Mark&nbsp;<span class=\"SpellE\" style=\"font-size: 1.125rem\">Pavek has developed a <a href=\"https:\/\/potatoes.wsu.edu\/\">WSU potato website<\/a><\/span><\/li>\n\n\n\n<li> Results of vegetable field trials in Carol Miles\u2019 program at WSU Vancouver REU: <\/li>\n<\/ul>\n\n\n\n<ol>\n<li>Icebox watermelon production&nbsp;https:\/\/agsyst.wsu.edu\/Watermelon.htm<\/li>\n\n\n\n<li>Winter lettuce production&nbsp;https:\/\/agsyst.wsu.edu\/WinterLettuce.htm<\/li>\n\n\n\n<li>Alternatives to plastic mulch&nbsp;https:\/\/agsyst.wsu.edu\/AltMulch.htm<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">Agroindustria<\/h3>\n\n\n\n<ul>\n<li>Riga, E., and Collins, H.P. 2004. Green manure effects on&nbsp;<em>Meloidogyne<\/em><em>&nbsp;chitwoodi&nbsp;<\/em>and&nbsp;<em>Paratrichodorus<\/em><em>&nbsp;allius<\/em>, economically important nematodes of&nbsp;<strong>potatoes<\/strong>&nbsp;in the&nbsp;Pacific Northwest&nbsp;of the&nbsp;USA.&nbsp;Agroindustria&nbsp;3:321-322.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Biological &amp; Cultural Tests:<\/h3>\n\n\n\n<ul>\n<li>du&nbsp;Toit, L.J., and&nbsp;Pelter, G.Q. 2005. Susceptibility of storage&nbsp;<strong>onion<\/strong>&nbsp;cultivars to iris yellow spot in the Columbia Basin of Washington, 2004. B&amp;C Tests 20:V006.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Fungicide &amp;&nbsp;Nematicide&nbsp;Tests:<\/h3>\n\n\n\n<ul>\n<li>du&nbsp;Toit, L.J., and&nbsp;Derie, M.L. 2005. Evaluation of&nbsp;Actigard, bactericides, and compost teas for control of bacterial blight in&nbsp;<strong>carrot seed crops<\/strong>, 2004. F&amp;N Tests 60:V046.<\/li>\n\n\n\n<li>du&nbsp;Toit, L.J., and&nbsp;Derie, M.L. 2005. Evaluation of fungicides and compost teas for control of Botrytis&nbsp;scape&nbsp;and umbel blight in&nbsp;<strong>onion seed crops<\/strong>, 2004. F&amp;N Tests 60:V045.<\/li>\n\n\n\n<li>du&nbsp;Toit, L.J.,&nbsp;Derie, M.L., and Hernandez-Perez, P. 2005. Evaluation of fungicides for control of leaf spot in&nbsp;<strong>spinach seed crops<\/strong>, 2004. F&amp;N Tests 60:V044.<\/li>\n\n\n\n<li>du&nbsp;Toit, L.J.,&nbsp;Derie, M.L., and Hernandez-Perez, P. 2005. Evaluation of yield loss caused by leaf spot fungi in&nbsp;<strong>spinach seed crops<\/strong>, 2004. F&amp;N Tests 60:V047.<\/li>\n\n\n\n<li>du&nbsp;Toit, L.J.,&nbsp;Derie, M.L., and Morrison, R.H. 2005. Evaluation of fungicide seed treatments for control of black leg of&nbsp;<strong>cauliflower<\/strong>, 2004. F&amp;N Tests 60:ST011.<\/li>\n\n\n\n<li>Gundersen, B. and&nbsp;Inglis, D. A. 2005. Evaluation of in-furrow treatments for control of pink rot on&nbsp;<strong>potato<\/strong>, 2004. F&amp;N Tests 60.<\/li>\n\n\n\n<li>Inglis, D. A. and&nbsp;Gundersen, B. 2005. Evaluation of seed, in-furrow and foliar treatments for control of root rot on&nbsp;<strong>peas<\/strong>, 2003. F&amp;N Tests 60.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Plant Disease:&nbsp;<\/h3>\n\n\n\n<ul>\n<li>du&nbsp;Toit, L.J., Crowe, F.J.,&nbsp;Derie, M.L., Simmons, R.B., and&nbsp;Pelter, G.Q. 2005. Bacterial blight in&nbsp;<strong>carrot seed crops<\/strong>&nbsp;in the&nbsp;Pacific Northwest. Plant Disease:&nbsp;<em>in press<\/em>.<\/li>\n\n\n\n<li>du&nbsp;Toit, L.J.,&nbsp;Derie, M.L., and Hernandez-Perez, P. 2005.&nbsp;Verticillium&nbsp;wilt in&nbsp;<strong>spinach seed crops<\/strong>. Plant Disease 89:4-11.<\/li>\n\n\n\n<li>du&nbsp;Toit, L.J.,&nbsp;Derie, M.L., and&nbsp;Pelter, G.Q. 2004.&nbsp;<em>Botrytis&nbsp;<\/em>species in&nbsp;<strong>onion seed crops<\/strong>&nbsp;in Washington Plant Disease 88:1061-1068.<\/li>\n\n\n\n<li>du&nbsp;Toit, L.J.,&nbsp;Pappu, H.R.,&nbsp;Druffel, K.L., and&nbsp;Pelter, G.Q. 2004. Iris yellow spot virus in&nbsp;<strong>onion bulb and seed crops<\/strong>&nbsp;in Washington Plant Disease 88:222.<\/li>\n\n\n\n<li>Ingham, R.E., Hamm, P.B., Riga, A., and Merrifield, K.J. 2005. First report of stunting and root rot of&nbsp;<strong>potato<\/strong>&nbsp;associated with&nbsp;<em>Pratylenchus&nbsp;penetrans<\/em>&nbsp;in the Columbia Basin of Washington. Plant Disease 89:207.<\/li>\n\n\n\n<li>Johnson, D. A.,&nbsp;Inglis, D. A., and Miller, J. S.&nbsp; 2004.&nbsp;Control of&nbsp;<strong>potato<\/strong>&nbsp;tuber rots caused by&nbsp;oomycetes&nbsp;with foliar applications of phosphorous acid. Plant Disease 88:1153-1159.<\/li>\n\n\n\n<li>Porter, L. D.,&nbsp;Inglis, D. A., and Johnson, D. A. 2004. Identification and characterization of resistance to&nbsp;<em>Phytophthora&nbsp;infestans<\/em>&nbsp;in commercial&nbsp;<strong>potato<\/strong>&nbsp;cultivars and advanced breeding lines. Plant Disease 88:965-972<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Plant Health Progress<\/h3>\n\n\n\n<ul>\n<li>du&nbsp;Toit, L.J.,&nbsp;Glawe, D.A., and&nbsp;Pelter, G.Q. 2004. First report of powdery mildew of&nbsp;<strong>onion<\/strong>&nbsp;(<em>Allium&nbsp;cepa<\/em>) caused by&nbsp;<em>Leveillula&nbsp;taurica&nbsp;<\/em>in the Pacific Northwest Online. Plant Health Progress doi:10.1049\/PHP-2004-1129-01-HN.<\/li>\n\n\n\n<li>Glawe, D.A.,&nbsp;du&nbsp;Toit, L.J., and&nbsp;Pelter, G.Q. 2004. First report of powdery mildew on&nbsp;<strong>potato<\/strong>&nbsp;caused by&nbsp;<em>Leveillula&nbsp;taurica&nbsp;<\/em>inNorth America. Online. Plant Health Progress doi:10.1094\/PHP-2004-1214-01-HN.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Abstracts for posters or oral presentations:<\/h3>\n\n\n\n<ul>\n<li>Chilvers, M.I.,&nbsp;du&nbsp;Toit, L.J., and&nbsp;Peever, T.L. 2005. RFLP differentiation of neck rot&nbsp;<em>Botrytis&nbsp;<\/em>spp. present in&nbsp;<strong>onion seed crops<\/strong>&nbsp;in&nbsp;Washington&nbsp;State, and development of a real-time&nbsp;PCR&nbsp;assay for detection of these fungi in onion seed. 23<sup>rd<\/sup>&nbsp;Fungal Genetics Conference, 15-20 March 2005, Pacific Grove, CA.<\/li>\n\n\n\n<li>Coyne, C. J.,&nbsp;Grunwald, N. J.,&nbsp;Inglis, D. A.,&nbsp;McPhee, K. E., and&nbsp;Pilet-Nayel, M. L. 2004.&nbsp;Inheritance of&nbsp;Fusarium&nbsp;root rot&nbsp;resistance in&nbsp;<strong>pea<\/strong>&nbsp;using&nbsp;RILs. 5th European Grain Legume Conference, Dijon, France (Poster Abstract 7-11).<\/li>\n\n\n\n<li>Coyne, C. J., Watt, C., McManus, S.,&nbsp;Grunwald, N. J.,&nbsp;Inglis, D. A.,&nbsp;McPhee, K. E., and&nbsp;Pilet-Nayel, M. L. 2004. Preliminary identification of QTL associated with&nbsp;Fusarium&nbsp;root rot resistance in&nbsp;<strong>pea<\/strong>. Poster 6067. Ann. Mtg. ASA-CSSA-SSSA,&nbsp;Seattle.<\/li>\n\n\n\n<li>Glawe, D.A., Dugan, F.M.,&nbsp;Cerkauskas, R.F.,&nbsp;du&nbsp;Toit, L.J., Mohan, S.K., and Liu, Y. 2005.&nbsp;<em>Leveillula&nbsp;taurica<\/em>: An emerging plant pathogen in the Pacific Northwest&nbsp;<em>Inoculum<\/em>&nbsp;56:<em>in&nbsp;press<\/em><\/li>\n\n\n\n<li>Glawe, D.A., Dugan, F.M.,&nbsp;du&nbsp;Toit, L.J.,&nbsp;Liu,Y., and Rogers, J.D. 2005.&nbsp;<em>Leveillula&nbsp;taurica<\/em>&nbsp;in Washington State. Annual Meeting of the Pacific Division of the APS, 28 June \u2013 1 July 2005, Portland, OR.&nbsp;Phytopathology&nbsp;95:<em>accepted<\/em>.<\/li>\n\n\n\n<li>Inglis, D. A. and&nbsp;Gundersen, B. 2004. Evaluation of seed, in-furrow and foliar treatments for control of damping-off and root rot on&nbsp;<strong>green pea<\/strong>.&nbsp;Ann.&nbsp;Wash.&nbsp;Tilth&nbsp;Mtg.,&nbsp;Vancouver,&nbsp;WA&nbsp;(poster presentation).<\/li>\n\n\n\n<li>Hernandez-Perez, P., and&nbsp;du&nbsp;Toit, L.J. 2005. Efficacy of hot water and chlorine for eradication of&nbsp;<em>Cladosporium&nbsp;variabile<\/em>,&nbsp;<em>Stemphylium&nbsp;botryosum<\/em>, and&nbsp;<em>Verticillium<\/em>spp. from&nbsp;<strong>spinach<\/strong>&nbsp;seed. &nbsp;Phytopathology&nbsp;95:S41.<\/li>\n\n\n\n<li>Hernandez-Perez, P., and&nbsp;du&nbsp;Toit, L.J. 2005. Prevalence of&nbsp;<em>Cladosporium&nbsp;variabile<\/em>&nbsp;and<em>&nbsp;Stemphylium&nbsp;botryosum<\/em>&nbsp;in commercial&nbsp;<strong>spinach<\/strong>&nbsp;seed, and the potential for seed transmission of these fungi.&nbsp;Phytopathology&nbsp;95:S41.<\/li>\n\n\n\n<li>Lee, I.,&nbsp;Bottner, K.,&nbsp;Munyaneza, J.,&nbsp;Davis, R.,&nbsp;Croslin, J.,&nbsp;du&nbsp;Toit, L., and&nbsp;Crosby, T. 2005. Carrot purple leaf: A new&nbsp;<strong>carrot<\/strong>&nbsp;disease associated with&nbsp;<em>Spiroplasma&nbsp;citri&nbsp;<\/em>and phytoplasmas in Washington.&nbsp;Phytopathology&nbsp;95:S57.<\/li>\n<\/ul>\n\n\n\n<p>(Please contact individual WSU Vegetable Pathology Team members if you would like further information on a specific paper.)<\/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        <div id=\"cahnrs-back-to-top\" class=\"cahnrs-back-to-top\" hidden aria-hidden=\"true\">\n            <a id=\"cahnrs-back-to-top-btn\" class=\"cahnrs-back-to-top__btn\" href=\"#product-top\" aria-label=\"Back to top\">\n                <span class=\"cahnrs-back-to-top__icon\" aria-hidden=\"true\">\u2191<\/span>\n                <span class=\"cahnrs-back-to-top__label\">Back to top<\/span>\n            <\/a>\n        <\/div>\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>\n        <div id=\"cahnrs-back-to-top\" class=\"cahnrs-back-to-top\" hidden aria-hidden=\"true\">\n            <a id=\"cahnrs-back-to-top-btn\" class=\"cahnrs-back-to-top__btn\" href=\"#product-top\" aria-label=\"Back to top\">\n                <span class=\"cahnrs-back-to-top__icon\" aria-hidden=\"true\">\u2191<\/span>\n                <span class=\"cahnrs-back-to-top__label\">Back to top<\/span>\n            <\/a>\n        <\/div>\n\n\n<p><\/p>\n\n        <div id=\"cahnrs-back-to-top\" class=\"cahnrs-back-to-top\" hidden aria-hidden=\"true\">\n            <a id=\"cahnrs-back-to-top-btn\" class=\"cahnrs-back-to-top__btn\" href=\"#product-top\" aria-label=\"Back to top\">\n                <span class=\"cahnrs-back-to-top__icon\" aria-hidden=\"true\">\u2191<\/span>\n                <span class=\"cahnrs-back-to-top__label\">Back to top<\/span>\n            <\/a>\n        <\/div>","protected":false},"excerpt":{"rendered":"<p>Lindsey du Toit and Debra Inglis, editors WSU Mount Vernon NWREC 16650 State Rte 536, Mount Vernon, WA 98273-4768 360-848-6140 (tel), 360-848-6159 (fax) Newsletter Archives WSU Vegetable Pathology Team Newsletter IN THIS ISSUE Greetings &amp;amp;&amp;hellip;<\/p>\n","protected":false},"author":4,"featured_media":0,"parent":0,"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\/3233"}],"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=3233"}],"version-history":[{"count":1,"href":"https:\/\/mtvernon.wsu.edu\/path_team\/wp-json\/wp\/v2\/pages\/3233\/revisions"}],"predecessor-version":[{"id":7947,"href":"https:\/\/mtvernon.wsu.edu\/path_team\/wp-json\/wp\/v2\/pages\/3233\/revisions\/7947"}],"wp:attachment":[{"href":"https:\/\/mtvernon.wsu.edu\/path_team\/wp-json\/wp\/v2\/media?parent=3233"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mtvernon.wsu.edu\/path_team\/wp-json\/wp\/v2\/categories?post=3233"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mtvernon.wsu.edu\/path_team\/wp-json\/wp\/v2\/tags?post=3233"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}