Disease Du Jour (June 22, 2011)

I taught a Master Gardeners class in Avoyelles Parish yesterday evening and in appreciation Dr. Carlos Smith and members of the class presented me with this beautiful bouquet.

It’s not everyday that you get a bouquet of tomato flowers, especially one containing plants infected with TYLCV (tomato yellow leaf curl virus). Thanks all, you made my day!

Apparently TYLCV is fairly widespread in Avoyelles Parish this year and most likely it was introduced on infected transplants.  The virus is neither seed-borne nor transmitted mechanically to any extent. Once introduced the primary means of spread is by whiteflies, which, according to Dr. Rodrigo Valverde (our plant virologist), are extremely efficient vectors of this virus. So even though whitefly populations have been quite low to date, they may still be responsible for its introduction and spread. For more information on TYLCV, please see the Louisiana Plant Pathology fact sheet at http://tinyurl.com/44qrevn.


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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