{"id":2167,"date":"2019-10-21T09:22:15","date_gmt":"2019-10-21T13:22:15","guid":{"rendered":"https:\/\/site.extension.uga.edu\/colquittag\/?p=2167"},"modified":"2019-10-21T09:22:15","modified_gmt":"2019-10-21T13:22:15","slug":"tomato-spotted-wilt-virus-a-significant-problem-for-peanut-producers-in-2019","status":"publish","type":"post","link":"https:\/\/site.extension.uga.edu\/colquittag\/2019\/10\/tomato-spotted-wilt-virus-a-significant-problem-for-peanut-producers-in-2019\/","title":{"rendered":"Tomato spotted wilt virus a significant problem for peanut producers in 2019"},"content":{"rendered":"
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Published on 10\/18\/19<\/div>\n

Tomato spotted wilt virus a significant problem for peanut producers in 2019<\/h1>\n
By\u00a0Clint Thompson\u00a0for\u00a0CAES News<\/div>\n<\/div>\n<\/div>\n
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University of Georgia Cooperative Extension plant pathologist Bob Kemerait cautions Georgia peanut producers in the midst of harvesting this year\u2019s crop that it\u2019s never too early to look ahead to 2020, especially with regards to tomato spotted wilt virus (TSWV).<\/p>\n

The virus, which caused widespread devastation to Georgia\u2019s peanuts in the 1990s, had a major impact on this year\u2019s crop. Kemerait attributes rise in TSWV incidences in part to complacency on the part of Georgia farmers.<\/p>\n

\u201cI think our growers are forgetting about how bad spotted wilt can be. For that reason, rather than considering all of the management tactics in the Peanut Rx tool, they\u2019re sometimes taking easier, maybe cheaper options because of other financial considerations they might have,\u201d Kemerait said. \u201cIn 2020, I\u2019m encouraging growers to recognize that we had a significant problem with spotted wilt this past year.\u201d<\/p>\n

Fortunately for Georgia farmers, TSWV was not as bad this year as in 1997 when the value of the state\u2019s crop was reduced by more than 10%. But the potential is there for the virus to become widespread again if producers don\u2019t consider appropriate management strategies.<\/p>\n

Kemerait reminds farmers that all of their TSWV management decisions should be made once their 2020 seed has been planted.<\/p>\n

\u201cFor the next 140 days, they\u2019ve got to live with those decisions,\u201d Kemerait said. \u201cWhen they close the furrow, they\u2019ve already decided the planting date, the variety, the tillage, the seeding rate, what thrips management product to use. They\u2019ve got to live with that for the rest of the season.\u201d<\/p>\n

Most growers understand that TSWV is vectored by thrips, tiny insects that can spread the virus by feeding on infected plants. Infected thrips transmit the virus when they move to feed on healthy plants. The virus can dwarf plants and cause significant reductions in peanut yields.<\/p>\n

While there are several products that growers can use to manage thrips, Kemerait notes that Thimet, applied in furrow, is the only insecticide that can both manage thrips and reduce the incidence of TSWV.<\/p>\n

\u201cOnly one product, Thimet, has been shown to control thrips and also minimize the impact of the spotted wilt intensity. It activates the plant\u2019s defenses and the plant is able to fight spotted wilt better than others,\u201d he said.<\/p>\n

TSWV dates back 40 years to when it was first discovered in peanuts in Texas. It was later found in Louisiana and Alabama and was detected as a major problem in Georgia-grown peanuts, vegetables and tobacco in the 1990s.<\/p>\n

Resistant cultivars developed by UGA peanut breeder Bill Branch reduced the virus\u2019 impact on peanuts over the next decade, but there has been a change in recent years.<\/p>\n

\u201cI would say that 2019 has been a wake-up call for tomato spotted wilt. It\u2019s an alarm going off. Because of our new varieties and because of our management, we\u2019ve been able to keep this disease at bay, but 2019 has shown it has not gone anywhere. It is still there and we need to continue to be vigilant and protect ourselves against it,\u201d Kemerait said.<\/p>\n

For more information about TSWV, see\u00a0tswv.caes.uga.edu<\/a>.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Published on 10\/18\/19 Tomato spotted wilt virus a significant problem for peanut producers in 2019 By\u00a0Clint Thompson\u00a0for\u00a0CAES News University of Georgia Cooperative Extension plant pathologist Bob Kemerait cautions Georgia peanut producers in the midst of harvesting this year\u2019s crop that it\u2019s never too early to look ahead to 2020, especially with regards to tomato spotted […]<\/p>\n","protected":false},"author":281,"featured_media":2168,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2167","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/site.extension.uga.edu\/colquittag\/wp-json\/wp\/v2\/posts\/2167","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/site.extension.uga.edu\/colquittag\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/site.extension.uga.edu\/colquittag\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/site.extension.uga.edu\/colquittag\/wp-json\/wp\/v2\/users\/281"}],"replies":[{"embeddable":true,"href":"https:\/\/site.extension.uga.edu\/colquittag\/wp-json\/wp\/v2\/comments?post=2167"}],"version-history":[{"count":1,"href":"https:\/\/site.extension.uga.edu\/colquittag\/wp-json\/wp\/v2\/posts\/2167\/revisions"}],"predecessor-version":[{"id":2169,"href":"https:\/\/site.extension.uga.edu\/colquittag\/wp-json\/wp\/v2\/posts\/2167\/revisions\/2169"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/site.extension.uga.edu\/colquittag\/wp-json\/wp\/v2\/media\/2168"}],"wp:attachment":[{"href":"https:\/\/site.extension.uga.edu\/colquittag\/wp-json\/wp\/v2\/media?parent=2167"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/site.extension.uga.edu\/colquittag\/wp-json\/wp\/v2\/categories?post=2167"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/site.extension.uga.edu\/colquittag\/wp-json\/wp\/v2\/tags?post=2167"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}