{"id":892,"date":"2026-05-19T18:46:28","date_gmt":"2026-05-19T18:46:28","guid":{"rendered":"https:\/\/blogs.oregonstate.edu\/coarecplantpathology\/?p=892"},"modified":"2026-05-19T18:46:28","modified_gmt":"2026-05-19T18:46:28","slug":"ergot-alert-update-central-oregon-may-19-2026","status":"publish","type":"post","link":"https:\/\/blogs.oregonstate.edu\/coarecplantpathology\/2026\/05\/19\/ergot-alert-update-central-oregon-may-19-2026\/","title":{"rendered":"Ergot Alert Update (Central Oregon): May 19, 2026"},"content":{"rendered":"\n<p>A sentinel plot of Kentucky bluegrass was established at the OSU Central Oregon Agricultural Research and Extension Center and artificially-infested with ergot sclerotia in Fall 2025. <strong>Today we observed sclerotia in various stages of germination in the sentinel plot, indicating that airborne ascospore production has started or will begin soon. <\/strong><\/p>\n\n\n\n<p>This timing is also coinciding with flowering in many Kentucky bluegrass cultivars. Protective fungicides should be applied at the onset of flowering and throughout anthesis to protect unfertilized ovaries from infection. Cultivars with prolonged flowering periods may require more than one application. More information on registered products for ergot control in grass grown for seed can be found in the <a href=\"https:\/\/pnwhandbooks.org\/plantdisease\/host-disease\/grass-seed-ergot\">PNW Plant Disease Management Handbook<\/a>.<\/p>\n\n\n\n<p>Established fields that experienced ergot in the previous year are at a higher risk for ergot than first-year fields or fields with no prior history of ergot infection. However, airborne ascospores can travel from one field to another, meaning that even first-year fields may become infected when located near infested fields.<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>A sentinel plot of Kentucky bluegrass was established at the OSU Central Oregon Agricultural Research and Extension Center and artificially-infested with ergot sclerotia in Fall 2025. Today we observed sclerotia in various stages of germination in the sentinel plot, indicating that airborne ascospore production has started or will begin soon. This timing is also coinciding&hellip; <a href=\"https:\/\/blogs.oregonstate.edu\/coarecplantpathology\/2026\/05\/19\/ergot-alert-update-central-oregon-may-19-2026\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":8969,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1269983],"tags":[],"class_list":["post-892","post","type-post","status-publish","format-standard","hentry","category-ergot-alerts"],"_links":{"self":[{"href":"https:\/\/blogs.oregonstate.edu\/coarecplantpathology\/wp-json\/wp\/v2\/posts\/892","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.oregonstate.edu\/coarecplantpathology\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.oregonstate.edu\/coarecplantpathology\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.oregonstate.edu\/coarecplantpathology\/wp-json\/wp\/v2\/users\/8969"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.oregonstate.edu\/coarecplantpathology\/wp-json\/wp\/v2\/comments?post=892"}],"version-history":[{"count":2,"href":"https:\/\/blogs.oregonstate.edu\/coarecplantpathology\/wp-json\/wp\/v2\/posts\/892\/revisions"}],"predecessor-version":[{"id":894,"href":"https:\/\/blogs.oregonstate.edu\/coarecplantpathology\/wp-json\/wp\/v2\/posts\/892\/revisions\/894"}],"wp:attachment":[{"href":"https:\/\/blogs.oregonstate.edu\/coarecplantpathology\/wp-json\/wp\/v2\/media?parent=892"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.oregonstate.edu\/coarecplantpathology\/wp-json\/wp\/v2\/categories?post=892"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.oregonstate.edu\/coarecplantpathology\/wp-json\/wp\/v2\/tags?post=892"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}