Disease Du Jour (April 14, 2011)

Received the first sample of the season of tomato spotted wilt virus from northern Livingston Parish. It was found in two locations several miles apart. Both samples were of Celebrity tomatoes that had not even set fruit yet. This virus is transmitted by thrips and generally acquires the virus from weed hosts like the pasture buttercup, which has been abundant this year because of the early warm weather. Only the immature thrips can acquire the virus, which is then transmitted by the adults once they develop. Chemical control of the thrips is not particularly effective in reducing spread because by the time the adult contacts enough of the insecticide to kill it, it has already transmitted the virus. 

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About Don Ferrin

I am an associate professor and extension specialist in the Department of Plant Patholgy & Crop Physiology with the LSU AgCenter in Baton Rouge. I have statewide responsibility for issues and educational programs related to diseases of all horticultural crops in Louisiana.
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2 Responses to Disease Du Jour (April 14, 2011)

  1. Leslie Lightbourne says:

    great resource! Thanks, L

  2. R Jones says:

    I was doing a search for information on the Tomato Spotted Wilt Virus when I found your blog . This was very helpful. Thank you.

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