{"id":49,"date":"2014-01-09T17:06:36","date_gmt":"2014-01-10T01:06:36","guid":{"rendered":"http:\/\/ext100.wsu.edu\/grant-adams\/?page_id=49"},"modified":"2026-02-25T09:20:32","modified_gmt":"2026-02-25T17:20:32","slug":"potato-vegetable-production-systems","status":"publish","type":"page","link":"https:\/\/extension.wsu.edu\/grant\/agriculture\/potato-vegetable-production-systems\/","title":{"rendered":"Vegetable &amp; Seed Crops"},"content":{"rendered":"<div class=\"wsu-hero wsu-width--full wsu-pattern--wsu-light-radial-left  wsu-hero--size-xsmall \">\n\t\n\t<div class=\"wsu-image-frame wsu-image-frame--fill\">\n\t<img decoding=\"async\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2024\/07\/Corn-Crops-2-Carries-Pic-scaled.jpg\"\n\t\tsrcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2024\/07\/Corn-Crops-2-Carries-Pic-scaled.jpg 2560w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2024\/07\/Corn-Crops-2-Carries-Pic-scaled.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2024\/07\/Corn-Crops-2-Carries-Pic-scaled.jpg 792w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2024\/07\/Corn-Crops-2-Carries-Pic-scaled.jpg 768w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2024\/07\/Corn-Crops-2-Carries-Pic-scaled.jpg 1536w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2024\/07\/Corn-Crops-2-Carries-Pic-scaled.jpg 2048w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2024\/07\/Corn-Crops-2-Carries-Pic-scaled.jpg 198w\"\n\t\tsizes=\"(max-width: 2560px) 100vw, 2560px\"\n\t\talt=\"A large corn field with tall, green stalks of corn with the blue sky and a couple white clouds in the back.\"\n\t\tstyle=\"object-position: 49% 39%\"\n\t\t\/>\n<\/div>\n\n\t<div class=\"wsu-overlay wsu-pattern-after wsu-overlay--light wsu-pattern--none\"><\/div>\n\t<div class=\"wsu-hero__content\">\n\t\t<div class=\"wsu-hero__caption\">\n\t\t\t\t\t\t\t\t\t<h1 id=\"title-id-69d2f51db61b7\" class=\"wsu-title wsu-hero__title\"><span>Vegetable &amp; Seed Crops<\/span><\/h1>\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n<\/div>\n\n\n<div class=\"wsu-row wsu-row--sidebar-right\" >\r\n    \n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<h2 class=\"wp-block-heading has-text-align-left  wsu-heading--style-marked wsu-heading--mark-color-crimson\">Regional Extension Specialist <em>Carrie H. Wohleb <\/em>Ph.D.<\/h2>\n\n\n\n<p class=\"has-text-align-left  wsu-align-item--center\">Specializes in the commercial production of vegetable and seed crops. She provides educational programs and conducts field studies to address management issues of commercial vegetable production, including <a href=\"http:\/\/potatoes.wsu.edu\/\">potatoes<\/a>, onions, peas, sweet corn, carrots, dry edible beans, alternative vegetable crops, and seed crops.<\/p>\n\n<\/div>\r\n\n\n<div class=\"wsu-column  wsu-color-background--gray-5 wsu-border--add-left wsu-border--color-crimson\"  style=\"\">\r\n\t\n\n<h2 class=\"wp-block-heading\">Quick Links<\/h2>\n\n\n    <nav class=\"wsu-navigation-vertical wsu-vertical-menu\">\n        <ul id=\"wsu-site-menu\" class=\"wsu-menu-collapse wsu-menu-collapse--style-vertical\"><li><a href=\"https:\/\/extension.wsu.edu\/grant\/agriculture\/potato-vegetable-production-systems\/\">Vegetable &amp; Seed Crops<\/a><\/li>\n<li><a href=\"https:\/\/extension.wsu.edu\/grant\/agriculture\/potato-vegetable-production-systems\/cbvsa-cbvsfra\/\">CBSA &amp; CBSFRA<\/a><\/li>\n<li><a href=\"https:\/\/extension.wsu.edu\/grant\/agriculture\/potato-vegetable-production-systems\/onion-cultivar-trial-results\/\">Onion Cultivar Trial Results<\/a><\/li>\n<li><a href=\"https:\/\/extension.wsu.edu\/grant\/agriculture\/potato-vegetable-production-systems\/sweet-corn-seed-treatment-trials\/\">Sweet Corn Seed Treatment Trials<\/a><\/li>\n<\/ul>    <\/nav>\n\n<\/div>\r\n\n<\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n<div class=\"wsu-row wsu-spacing-top--xmedium wsu-spacing-before--xlarge wsu-row--sidebar-right\" >\r\n    \n<div class=\"wsu-column  wsu-border--color-crimson\"  style=\"\">\r\n\t\n\n<h2 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-crimson\">Potatoes<\/h2>\n\n\n\n<p>The insect pest monitoring network provides the potato industry with current information about the size and location of important insect pest populations in the Columbia Basin. Subscribe to receive \u201cWSU Potato Alerts\u201d by sending an e-mail to <a href=\"mailto:cwohleb@wsu.edu\">cwohleb@wsu.edu<\/a>.<\/p>\n\n\n<div class=\"wsu-overlap wsu-overlap-spotlight\">\r\n    <div class=\"wsu-overlap__container\">\r\n        <div class=\"wsu-overlap__column wsu-overlap--overlap-none\">\r\n            <div class=\"wsu-overlap__column-inner\">\r\n                <div class=\"wsu-overlap-spotlight__image  \">\r\n                    <div class=\"wsu-image-frame \">\r\n                        <img decoding=\"async\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2026\/02\/Trapping-Psyllids-2021-b-792x594.jpg\"\r\n                        srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2026\/02\/Trapping-Psyllids-2021-b-792x594.jpg 792w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2026\/02\/Trapping-Psyllids-2021-b-396x297.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2026\/02\/Trapping-Psyllids-2021-b-768x576.jpg 768w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2026\/02\/Trapping-Psyllids-2021-b-1536x1152.jpg 1536w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2026\/02\/Trapping-Psyllids-2021-b-2048x1536.jpg 2048w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2026\/02\/Trapping-Psyllids-2021-b-198x149.jpg 198w\"\r\n                        sizes=\"(max-width: 792px) 100vw, 792px\"\r\n                        alt=\"Field of potato plants\"\r\n                        style=\"object-position: 50% 50%\"\r\n                        \/>\r\n                    <\/div>\r\n                <\/div>\r\n            <\/div>\r\n        <\/div>\r\n        <div class=\"wsu-overlap__column wsu-overlap--surface-column wsu-overlap--overlap-none\">\r\n            <div class=\"wsu-overlap__column-inner\">\r\n                <div class=\"wsu-overlap-spotlight__caption  wsu-dropshadow--medium\">\r\n                    \n\n<ul>\n<li><a href=\"https:\/\/cpg.potatoes.wsu.edu\/\">Potato Crop Protection Guide<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/potatoes.decisionaid.systems\/articles\/wsu_potato_alerts\">Potato Decision Aid System<\/a> <\/li>\n\n\n\n<li><a href=\"https:\/\/www.growingproduce.com\/tag\/potato-pointers\/\">Potato Pointers<\/a><\/li>\n<\/ul>\n\n                <\/div>\r\n            <\/div>\r\n        <\/div>\r\n    <\/div>\r\n<\/div>\n<\/div>\r\n\n\n<div class=\"wsu-column  wsu-border--color-crimson wsu-color-background--gray-0 wsu-border--add-left\"  style=\"\">\r\n\t\n\n<p>Carrie also coordinates a&nbsp;<a href=\"https:\/\/potatoes.decisionaid.systems\/articles\/wsu_potato_alerts\">Potato Pest Monitoring Network<\/a> for the Columbia Basin of Washington. The insect pest network provides the potato industry with current information about the size and whereabouts of important insect pest populations in the Columbia Basin. The project targets key insect pests: green peach aphid, beet leafhopper, potato psyllid, lygus bug, and potato tuberworm.<\/p>\n\n<\/div>\r\n\n<\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<div style=\"height:0px\" aria-hidden=\"true\" class=\"wp-block-spacer wsu-spacing-after--none\"><\/div>\n\n\n<div class=\"wsu-row wsu-row--sidebar-left\" >\r\n    \n<div class=\"wsu-column  wsu-border--color-crimson wsu-color-background--gray-5 wsu-border--add-right\"  style=\"\">\r\n\t\n\n<ul>\n<li><a href=\"https:\/\/extension.wsu.edu\/grant\/agriculture\/potato-vegetable-production-systems\/onion-cultivar-trial-results\/\">Onion Cultivar Trial Results<\/a> <\/li>\n\n\n\n<li><a href=\"https:\/\/extension.wsu.edu\/grant\/documents\/2024\/10\/2023-onion-cultivar-trial-presentation.pdf\">The WSU Onion Cultivar Trial : Onion Cultivar Performance 2013 &#8211; 2034 (pdf)<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/WSUOnionCultivarTrialOnionCultivarPerformance2008201211.pdf\">The WSU Onion Cultivar Trial: Onion Cultivar Performance 2008-2012 (pdf)<\/a>&nbsp;<\/li>\n<\/ul>\n\n<\/div>\r\n\n\n<div class=\"wsu-column  wsu-border--add-right wsu-border--color-crimson wsu-color-background--white\"  style=\"\">\r\n\t\n\n<h2 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-crimson\">Onions<\/h2>\n\n\n\n<p>The WSU Extension Onion Cultivar Trial and Storage Evaluations, which have been conducted since 1984, provide information about onion cultivars produced side-by-side under local growing conditions.<\/p>\n\n\n<div class=\"wsu-overlap wsu-overlap-spotlight  wsu-overlap-spotlight--style-left-middle\">\r\n    <div class=\"wsu-overlap__container\">\r\n        <div class=\"wsu-overlap__column wsu-overlap--overlap-none\">\r\n            <div class=\"wsu-overlap__column-inner\">\r\n                <div class=\"wsu-overlap-spotlight__image  \">\r\n                    <div class=\"wsu-image-frame wsu-image--ratio-1-1\">\r\n                        <img decoding=\"async\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2026\/02\/2004-Onion-Harvest-14-792x594.jpg\"\r\n                        srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2026\/02\/2004-Onion-Harvest-14-792x594.jpg 792w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2026\/02\/2004-Onion-Harvest-14-396x297.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2026\/02\/2004-Onion-Harvest-14-768x576.jpg 768w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2026\/02\/2004-Onion-Harvest-14-1536x1152.jpg 1536w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2026\/02\/2004-Onion-Harvest-14-2048x1536.jpg 2048w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2026\/02\/2004-Onion-Harvest-14-198x149.jpg 198w\"\r\n                        sizes=\"(max-width: 792px) 100vw, 792px\"\r\n                        alt=\"Group of red onions\"\r\n                        style=\"object-position: 50% 50%\"\r\n                        \/>\r\n                    <\/div>\r\n                <\/div>\r\n            <\/div>\r\n        <\/div>\r\n        <div class=\"wsu-overlap__column wsu-overlap--surface-column wsu-overlap--overlap-none\">\r\n            <div class=\"wsu-overlap__column-inner\">\r\n                <div class=\"wsu-overlap-spotlight__caption \">\r\n                    \n<div class=\"wsu-cta wsu-cta--width-full wsu-spacing-after--none\" >\n\t<a \t\t\t\t\thref=\"https:\/\/extension.wsu.edu\/grant\/agriculture\/potato-vegetable-production-systems\/onion-cultivar-trial-results\/\"\t\n\t\tclass=\"wsu-button \">\n\t\t\t\n\t\tColumbia Basin\u00a0Onion Cultivar Trial Results\t\t\t<\/a>\n<\/div>\n\n\n\n<p class=\"has-text-align-center wsu-spacing-before--xxmedium wsu-spacing-after--xxsmall\">This <a href=\"https:\/\/extension.wsu.edu\/grant\/documents\/2024\/10\/2023-onion-cultivar-trial-presentation.pdf\">presentation(pdf)<\/a> compares cultivars entered in the trial from 2013-2023.<\/p>\n\n                <\/div>\r\n            <\/div>\r\n        <\/div>\r\n    <\/div>\r\n<\/div>\n\n\n<p class=\"has-text-align-center wsu-spacing-after--medium wsu-spacing-before--xxmedium\"><em>WSU Onion Alert Newsletter Archive Coming Soon<\/em><\/p>\n\n<\/div>\r\n\n<\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<div style=\"height:0px\" aria-hidden=\"true\" class=\"wp-block-spacer wsu-spacing-after--none\"><\/div>\n\n\n<div class=\"wsu-row  wsu-color-background--white wsu-row--halves\" >\r\n    \n<div class=\"wsu-column  wsu-border--add-left wsu-border--color-crimson wsu-color-background--gray-0\"  style=\"\">\r\n\t\n\n<h2 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-crimson\">Sweet Corn<\/h2>\n\n\n\n<p class=\"wsu-spacing-after--small\">The Seed Treatment Committee of the International Sweet Corn Development Association (ISCDA) organizes a multi-location seed treatment trial each year. Researchers from across the country evaluate the selected treatments for their effectiveness against seed-borne and soil-borne diseases that affect sweet corn stand and vigor.<\/p>\n\n\n<div class=\"wsu-cta wsu-text-align--center wsu-spacing-after--none wsu-spacing-before--xxmedium\" >\n\t<a \t\t\t\t\thref=\"https:\/\/extension.wsu.edu\/grant\/agriculture\/potato-vegetable-production-systems\/sweet-corn-seed-treatment-trials\/\"\t\n\t\tclass=\"wsu-button \">\n\t\t\t\n\t\tSweet Corn Seed Treatment Trials\t\t\t<\/a>\n<\/div>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" loading=\"lazy\" width=\"792\" height=\"362\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2026\/02\/2012-ISCDA-Trial-WA-2-TRTS-12-3-19-792x362.png\" alt=\"Three images of a corn field looking down the rows\" class=\"wp-image-13865\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2026\/02\/2012-ISCDA-Trial-WA-2-TRTS-12-3-19-792x362.png 792w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2026\/02\/2012-ISCDA-Trial-WA-2-TRTS-12-3-19-396x181.png 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2026\/02\/2012-ISCDA-Trial-WA-2-TRTS-12-3-19-768x351.png 768w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2026\/02\/2012-ISCDA-Trial-WA-2-TRTS-12-3-19-1536x701.png 1536w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2026\/02\/2012-ISCDA-Trial-WA-2-TRTS-12-3-19-198x90.png 198w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2026\/02\/2012-ISCDA-Trial-WA-2-TRTS-12-3-19.png 1958w\" sizes=\"(max-width: 792px) 100vw, 792px\" \/><\/figure>\n\n<\/div>\r\n\n\n<div class=\"wsu-column  wsu-border--add-right wsu-border--color-crimson wsu-color-background--gray-0\"  style=\"\">\r\n\t\n\n<h2 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-color-crimson\">Dry Beans<\/h2>\n\n\n\n<p>There are several Bacterial Diseases of Phytosanitary Significance for Bean Crops in Washington State.<\/p>\n\n\n<div class=\"wsu-cta  wsu-text-align--center\" >\n\t<a \t\t\t\t\thref=\"https:\/\/apps.leg.wa.gov\/wac\/default.aspx?dispo=true&#038;cite=16-301-365\"\t\n\t\tclass=\"wsu-button \">\n\t\t\t\n\t\tWashington Bean, Seed Quarantine\t\t\t<\/a>\n<\/div>\n\n<\/div>\r\n\n<\/div>\n\n\n<div style=\"height:4px\" aria-hidden=\"true\" class=\"wp-block-spacer wsu-spacing-after--none\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading has-text-align-center  wsu-heading--style-marked wsu-font-size--xlarge wsu-heading--mark-centered wsu-heading--mark-color-crimson\"><strong> Seed Crops<\/strong><\/h2>\n\n\n<div class=\"wsu-row wsu-row--single\" >\r\n    \n<div class=\"wsu-column  wsu-color-background--gray-0 wsu-border--add-bottom wsu-border--color-crimson\"  style=\"\">\r\n\t\n<div class=\"wsu-overlap wsu-overlap-spotlight wsu-overlap-spotlight--style-right-middle wsu-spacing-after--large\">\r\n    <div class=\"wsu-overlap__container\">\r\n        <div class=\"wsu-overlap__column wsu-overlap--overlap-none\">\r\n            <div class=\"wsu-overlap__column-inner\">\r\n                <div class=\"wsu-overlap-spotlight__image  \">\r\n                    <div class=\"wsu-image-frame wsu-image--ratio-16-9\">\r\n                        <img decoding=\"async\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2026\/02\/Screenshot-2025-12-19-080051.png\"\r\n                        srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2026\/02\/Screenshot-2025-12-19-080051.png 253w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2026\/02\/Screenshot-2025-12-19-080051-198x144.png 198w\"\r\n                        sizes=\"(max-width: 253px) 100vw, 253px\"\r\n                        alt=\"A bee on a plant\"\r\n                        style=\"object-position: 50% 50%\"\r\n                        \/>\r\n                    <\/div>\r\n                <\/div>\r\n            <\/div>\r\n        <\/div>\r\n        <div class=\"wsu-overlap__column wsu-overlap--surface-column wsu-overlap--overlap-none\">\r\n            <div class=\"wsu-overlap__column-inner\">\r\n                <div class=\"wsu-overlap-spotlight__caption  wsu-dropshadow--medium wsu-border--add-left\">\r\n                    \n\n<p>The Columbia Basin Seed Association was established in 1987 to promote the collaboration of seed growers, seed companies, university researchers, and government agencies for the greater good of the local seed industry.<\/p>\n\n\n<div class=\"wsu-cta  wsu-text-align--center\" >\n\t<a \t\t\t\t\thref=\"https:\/\/extension.wsu.edu\/grant\/agriculture\/potato-vegetable-production-systems\/cbvsa-cbvsfra\/\"\t\n\t\tclass=\"wsu-button \">\n\t\t\t\n\t\tColumbia Basin Seed Association\t\t\t<\/a>\n<\/div>\n\n                <\/div>\r\n            <\/div>\r\n        <\/div>\r\n    <\/div>\r\n<\/div>\n\n<div class=\"wsu-overlap wsu-overlap-spotlight wsu-overlap-spotlight--style-left-middle wsu-spacing-after--large wsu-align-item--center\">\r\n    <div class=\"wsu-overlap__container\">\r\n        <div class=\"wsu-overlap__column wsu-overlap--overlap-none\">\r\n            <div class=\"wsu-overlap__column-inner\">\r\n                <div class=\"wsu-overlap-spotlight__image  \">\r\n                    <div class=\"wsu-image-frame wsu-image--ratio-6-4\">\r\n                        <img decoding=\"async\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2024\/10\/Carrie-Sunflowers-792x594.jpg\"\r\n                        srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2024\/10\/Carrie-Sunflowers-792x594.jpg 792w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2024\/10\/Carrie-Sunflowers-396x297.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2024\/10\/Carrie-Sunflowers-768x576.jpg 768w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2024\/10\/Carrie-Sunflowers-1536x1152.jpg 1536w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2024\/10\/Carrie-Sunflowers-198x149.jpg 198w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2024\/10\/Carrie-Sunflowers.jpg 2048w\"\r\n                        sizes=\"(max-width: 792px) 100vw, 792px\"\r\n                        alt=\"Rows of bright green growing Parsley in a vast appearing crop. \"\r\n                        style=\"object-position: 50% 50%\"\r\n                        \/>\r\n                    <\/div>\r\n                <\/div>\r\n            <\/div>\r\n        <\/div>\r\n        <div class=\"wsu-overlap__column wsu-overlap--surface-column wsu-overlap--overlap-none\">\r\n            <div class=\"wsu-overlap__column-inner\">\r\n                <div class=\"wsu-overlap-spotlight__caption  wsu-dropshadow--medium wsu-border--add-right\">\r\n                    \n\n<p>The procedures for isolating seed crops in the Columbia Basin of Washington are provided here, including the dates that seed company representatives may reserve fields for seed production, and field isolation standards for each crop. Seed crops for which there are isolation standards include carrot, parsley, coriander, radish, canola, other crucifers, onion, chives, leeks, beets, sugar beets, and sunflowers.<\/p>\n\n\n<div class=\"wsu-cta  wsu-text-align--center\" >\n\t<a \t\t\t\t\thref=\"https:\/\/extension.wsu.edu\/grant\/agriculture\/potato-vegetable-production-systems\/cbvsa-cbvsfra\/\"\t\n\t\tclass=\"wsu-button \">\n\t\t\t\n\t\tColumbia Basin Seed Field Representatives Association\t\t\t<\/a>\n<\/div>\n\n                <\/div>\r\n            <\/div>\r\n        <\/div>\r\n    <\/div>\r\n<\/div>\n<\/div>\r\n\n<\/div>\n\n\n<div style=\"height:4px\" aria-hidden=\"true\" class=\"wp-block-spacer wsu-spacing-after--none\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading  wsu-heading--style-marked wsu-heading--mark-centered wsu-heading--mark-color-crimson\">Brassica Seed Crops in Washington<\/h2>\n\n\n<div class=\"wsu-row  wsu-color-background--white wsu-row--sidebar-left\" >\r\n    \n<div class=\"wsu-column wsu-spacing-after--default wsu-spacing-bottom--default wsu-border--add-right wsu-border--color-crimson wsu-color-background--white\"  style=\"\">\r\n\t\n<div class=\"wsu-cta  wsu-cta--width-full\" >\n\t<a \t\t\t\t\thref=\"https:\/\/www.arcgis.com\/home\/webmap\/viewer.html?webmap=04941fb46ba8447e842a31d845d72a24&#038;extent=-125.7211,44.532,-114.7897,49.6216\"\t\n\t\tclass=\"wsu-button \">\n\t\t\t\n\t\t A Map of the Brassica Production Districts\t\t\t<\/a>\n<\/div>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2024\/09\/Rapeseed.jpg\" alt=\"A close up of bright yellow flower buds, with a long green stem, bloomed Rapeseed plant in the middle of a crop of Rapeseed also known as a Brassica Seed Crop. \" class=\"wp-image-11044\" width=\"290\" height=\"436\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2024\/09\/Rapeseed.jpg 640w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2024\/09\/Rapeseed-396x595.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2024\/09\/Rapeseed-132x198.jpg 132w\" sizes=\"(max-width: 290px) 100vw, 290px\" \/><\/figure><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n<div class=\"wsu-cta wsu-text-align--center wsu-cta--width-inline wsu-spacing-after--default\" >\n\t<a \t\t\t\t\thref=\"https:\/\/apps.leg.wa.gov\/wac\/default.aspx?cite=16-326&#038;full=true\"\t\n\t\tclass=\"wsu-button \">\n\t\t\t\n\t\tBrassica Seed Production Districts\t\t\t<\/a>\n<\/div>\n\n<\/div>\r\n\n\n<div class=\"wsu-column  wsu-border--add-right wsu-border--color-crimson wsu-color-background--white\"  style=\"\">\r\n\t\n\n<p class=\"wsu-spacing-after--xxsmall\">There are rules regarding the production of Brassica seed crops in Washington (WAC 16-326). These rules are meant to support oilseed production while protecting established vegetable seed industries. <\/p>\n\n\n\n<p class=\"wsu-spacing-after--xxsmall\">Two Brassica seed production districts are designated; District 1 includes areas in Northwestern Washington, and District 2 includes portions of Grant and Adams counties. District 2 is further subdivided into two sub-districts: designated 2A and 2B. The rule specifies requirements for growing, transporting, and processing Brassica crops within the Brassica seed production districts. It sets a minimum isolation distance of 2 miles between Brassica crops.<\/p>\n\n\n\n<p> It also requires that the locations of all Brassica crops produced for seed or oil within the districts be identified during the pinning process (in District 2 at the WSU Grant County Extension office). The strictest provisions apply to district 1 and sub-district 2A, where Brassica crops are limited to those grown for seed for planting. Rapeseed crops intended for oil or fuel production in districts 1 and 2A may only be grown under conditions of a Brassica production agreement (RCW 15.51.040). Such agreements must be developed by the applicant and the WSDA in consultation with an advisory committee.<\/p>\n\n<\/div>\r\n\n<\/div>\n\n\n<h2 class=\"wp-block-heading  wsu-heading--style-marked wsu-font-size--xlarge wsu-heading--mark-centered wsu-heading--mark-color-crimson\"><strong>Relevant Links &amp; Information<\/strong><\/h2>\n\n\n<div class=\"wsu-row  wsu-color-background--white wsu-row--single\" >\r\n    \n<div class=\"wsu-column  wsu-border--color-crimson wsu-border--add-left\"  style=\"\">\r\n\t\n\n<p><\/p>\n\n\n<div class=\"wsu-row wsu-row--sidebar-right\" >\r\n    \n<div class=\"wsu-column  wsu-border--color-crimson wsu-border--add-bottom\"  style=\"\">\r\n\t\n\n<ul class=\"wsu-spacing-after--sxxsmall wsu-spacing-before--xmedium\">\n<li><a href=\"https:\/\/pnwhandbooks.org\/plantdisease\">PNW Pest and Disease Management Handbooks<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/picol.cahnrs.wsu.edu\/\">Pesticide Information Center Online (PICOL) Database<\/a><\/li>\n<\/ul>\n\n<\/div>\r\n\n\n<div class=\"wsu-column\"  style=\"\">\r\n\t\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"776\" height=\"423\" src=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2026\/02\/Potatoes-in-June-2.jpg\" alt=\"Potato plants with blooms\" class=\"wp-image-13871\" srcset=\"https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2026\/02\/Potatoes-in-June-2.jpg 776w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2026\/02\/Potatoes-in-June-2-396x216.jpg 396w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2026\/02\/Potatoes-in-June-2-768x419.jpg 768w, https:\/\/wpcdn.web.wsu.edu\/extension\/uploads\/sites\/34\/2026\/02\/Potatoes-in-June-2-198x108.jpg 198w\" sizes=\"(max-width: 776px) 100vw, 776px\" \/><\/figure>\n\n<\/div>\r\n\n<\/div>\n<\/div>\r\n\n<\/div>\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>Seed Crops Brassica Seed Crops in Washington Relevant Links &amp; Information \u2191 Back to top<\/p>\n","protected":false},"author":10,"featured_media":0,"parent":31,"menu_order":3,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_expiration_date":""},"categories":[7],"tags":[],"_links":{"self":[{"href":"https:\/\/extension.wsu.edu\/grant\/wp-json\/wp\/v2\/pages\/49"}],"collection":[{"href":"https:\/\/extension.wsu.edu\/grant\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/extension.wsu.edu\/grant\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/extension.wsu.edu\/grant\/wp-json\/wp\/v2\/users\/10"}],"replies":[{"embeddable":true,"href":"https:\/\/extension.wsu.edu\/grant\/wp-json\/wp\/v2\/comments?post=49"}],"version-history":[{"count":179,"href":"https:\/\/extension.wsu.edu\/grant\/wp-json\/wp\/v2\/pages\/49\/revisions"}],"predecessor-version":[{"id":13891,"href":"https:\/\/extension.wsu.edu\/grant\/wp-json\/wp\/v2\/pages\/49\/revisions\/13891"}],"up":[{"embeddable":true,"href":"https:\/\/extension.wsu.edu\/grant\/wp-json\/wp\/v2\/pages\/31"}],"wp:attachment":[{"href":"https:\/\/extension.wsu.edu\/grant\/wp-json\/wp\/v2\/media?parent=49"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/extension.wsu.edu\/grant\/wp-json\/wp\/v2\/categories?post=49"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/extension.wsu.edu\/grant\/wp-json\/wp\/v2\/tags?post=49"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}