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Tomato Spotted Wilt Virus

Tomato Spotted Wilt Virus in TobaccoPhoto: Tobacco leaf

     Tomato spotted wilt was first reported in Georgia tobacco in 1986, but was not considered a problem in the crop until 1989.  The incidence of this tospovirus was light in tobacco from 1989-1994.  However, from 1995 to present, the statewide percentages of tobacco stand losses and crop losses due to spotted wilt have steadily increased, peaking in 2002, with 41% stand loss and 20% crop loss ($19.4 million loss to the Georgia tobacco crop) (see Figure below).  The 2006-2008 growing seasons have shown a general trend in lower spotted wilt infection in tobacco.  Whether this trend continues is uncertain at this time. 
     The tobacco thrips is the most common vector of spotted wilt on the tobacco foliage each year; however, the western flower thrips, another reported vector species, occurs annually in tobacco blooms.  Both of these thrips vectors are commonly collected from numerous plant hosts in the tobacco farmscape throughout the entire year, and are collected from yellow sticky traps every month of the year, as well. 

Tobacco losses due to TSWV

For TSWV and thrips management information in tobacco, visit the following link

Tospoviruses in Solanaceae and Other Crops in the Coastal Plain of Georgia

 

More Information

Link to the UGA Tobacco Commodity web site for more information on TSWV of tobacco.