PNW-VEG Objectives (Poster)
- Assist with diagnoses of vegetable diseases, pests, and other problems
- Coordinate vegetable disease, pest, and production research and extension activities in the Pacific Northwest
- Provide growers and gardeners with resources to manage vegetable diseases, pests, and abiotic problems in environmentally-sound ways
- Publish new information about vegetable pathogens, pests and other problems; and their biology and management
- Serve the region’s fresh vegetable, processing vegetable, and vegetable seed crop industries

The Pacific Northwest Vegetable Extension Group received the 2012 Interdisciplinary Team award from the WSU College of Agriculture, Human, and Natural Resource Sciences (CAHNRS); from left, Carol Miles (horticulturist), Dan Bernardo (CAHNRS Dean), Debbie Inglis (plant pathologist), and Lindsey du Toit (plant pathologist).
Alert
Potato Insect Monitoring Report: September 12–18, 2012
This weekly report provides the potato industry with current information about the size and whereabouts of important insect pest populations in the Columbia Basin. The project targets three key insect pests: green peach aphid, beet leafhopper, and potato tuberworm. Read the full report.
Potato Wart and White Heath Scale

Potato wart on potato
Potato wart, found in Prince Edward Island, Canada, and white heath scale found recently in Montana are currently listed on the North American Plant Protection Organization’s Phytosanitary Alert System website. Both of these pests/pathogens can be tuberborne. Much of the potato seed coming into the Pacific Northwest is from both of these areas. These two pests have not yet been detected in Washington, Oregon, or Idaho. Read the report on potato wart from WSU Whatcom County Extension.
Potato trap reports, Oregon State University Hermiston Agricultural Research and Extension Center
Zebra Chip
Several PNW-VEG team members were recently on NPW and OPB radio discussing zebra chip. Zebra chip found near Hermiston in Eastern Oregon, August 2, 2012
Zebra Chip, a disease seriously impacting potatoes produced in Texas and other Southwest states in recent years, has been found impacting potatoes in the southern Columbia Basin in 2011. See the message from Phil Hamm, Oregon State University, to the Washington Potato Growers and allied industries: Phil Hamm’s message to industry. Included here are informational items about this disease and its vector. Please contact Andy Jensen, 509-765-8845 or Phil Hamm Phillip.B.Hamm@oregonstate.edu with questions.
Information on the disease and recent research:
History in the Making: Potato Zebra Chip Disease Associated with a New Psyllid-borne Bacterium – A Tale of Striped Potatoes, Texas Agrilife Research and Extensioin Center at Amarillo.
Vegetable Resource Highlights
- Bacterial Ring Rot on Potatoes. Washington State University Extension Bulletin. This publication provides information on the bacterial ring rot pathogen, its disease cycle, and ring rot management on potatoes.
- Production of Brassica Seed Crops in Washington State: A Case Study on the Complexities of Coexistence. Washington State University Extension Bulletin. The document was developed in response to the numerous controversial issues surrounding production of brassica vegetable seed crops, brassica oilseed crops, brassica oilseed seed crops, brassica cover crops, etc. in proximity given the risks of cross-pollination, introduction of seedborne, quarantine pathogens into some areas that are highly conducive to these pathogens, the prevalence of GMO traits in some brassica crops like canola vs. the zero-tolerance for GMO traits by many of the markets that buy brassica vegetable seed from the PNW, etc.
- Brown Marmorated Stink Bug (BMSB). Oregon State University Department of Horticulture. Information on BMSB which is widespread in the Willamette Valley, and its possible damage to crops including vegetables.
- News From the Field. August 14, 2012 issue of Onion ipmPIPE newsletter. Featuring the latest field observations from onion researchers around the country, this newsletter is designed to educate and inform growers, consultants, buyers, shippers and other onion industry stakeholders about the Onion ipmPIPE initative.
- Grafting in Vegetable Production. Vegetable grafting is relatively new to the U.S. but is quickly gaining use, especially in greenhouse tomato production. Learn about vegetable grafting from these Extension publications and presentations.
- Biology and Management of Aphids in Organic Cucurbit Production Systems. This article by Mary Barbercheck, Penn State University, provides an overview of the biology and life cycles, damage from, and management of the most common aphid pests in organic cucurbit crops.
- Weed Management Strategies for Organic Cucurbit Crops in the Southern United States. Mark Schonbeck, Virginia Association for Biological Farming describes how to manage some of the most troublesome weeds of cucurbit crops in the South.
- MSU’s Research results for bacterial canker in tomatoes. Research indicates it is best to manage canker before field planting tomatoes.
- Bacterial canker ravages processing tomatoes. Learn how to recognize bacterial canker now to manage this disease in the future.
Latest Photo Gallery Additions
from the Onion ipmPIPE
Diagnostic Pocket Series
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Xanthomonas Leaf Blight
of Onion
Upcoming Events
- 11th International Verticillium Symposium, May 5–8, Göttingen, Germany.
- Grass Seed Field Day, May 9, Hermiston, Oregon.
- The X International Symposium on Thysanoptera and Tospoviruses (ISTT 10), May 20–24, Brasilia, Brazil.
- Irrigated Wheat Field Day, June 5, Hermiston, Oregon.
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Potato Seed Lot Readings, June 11, Othello, Washington.
Contact: Mark Pavek, mjpavek@wsu.edu or 509-335-6861. -
Potato Seed Lot Readings, June 25, Othello, Washington.
Contact: Mark Pavek, mjpavek@wsu.edu or 509-335-6861. - 2013 Potato Field Day, June 26, Hermiston, Oregon.
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WSU Potato Field Day, June 27, Othello, Washington.
Contact: Mark Pavek, mjpavek@wsu.edu or 509-335-6861.
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