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47th TWC, Tob. Work. Conf., 2016, abstr. 63

Management of tomato spotted wilt virus with imidacloprid in Lowndes County from 2012-2015

DAWSON J.; KICKLIGHTER J.; PRICE J.; MOORE J.M.; BERTRAND P.
University of Georgia, Valdosta GA USA

Tomato Spotted Wilt Virus (TSWV) is a major pathogen of tobacco plants that is spread by the feeding activity of thrips. There are various symptoms of this disease. Some of the more common symptoms seen are: necrotic banding along and around the main veins, young leaves turning yellow then reddish brown, distortion of buds, concentric ringspots on leaves that merge to form larger areas of dead tissue, and death to the entire plant after a couple of days. Since TSWV is vectored by thrips, it is important to control thrips populations among the tobacco plants. Imidacloprid (Admire Pro) seedling drenches have been found to be an effective way to control thrips populations. From 1998-2014, 180 research trials conducted in Georgia found the average reduction of spotted wilt was 32 percent. The purpose of this research is to confirm that Admire Pro is controlling the occurrence of spotted wilt throughout tobacco fields in Lowndes County. Over the past years, test plots have been conducted on four different tobacco farm locations in Lowndes County for a total of 16 research trials. The results showed that 9 out of the 16 trials had control equal to or better than 32% control. (Reprinted with permission)