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ARS Home » Southeast Area » Tifton, Georgia » Crop Protection and Management Research » Research » Publications at this Location » Publication #147371
Title: PRELIMINARY RESULTS OF SURVEY OF WEEDS AS HOSTS OF TOMATO SPOTTED WILT VIRUS AND IMPATIENS NECROTIC SPOT VIRUS AROUND TOBACCO FIELDS IN GEORGIA: 2002 GROWING SEASON

Author
item MARTINEZ, N - UNIVERSITY OF GEORGIA
item CSINOS, A - UNIVERSITY OF GEORGIA
item Webster, Theodore
item BERTRAND, P - UNIVERSITY OF GEORGIA
item WALDNER, M - UNIVERSITY OF GEORGIA
item WHIDDON, J - UNIVERSITY OF GEORGIA
item DUFFIE, W - UNIVERSITY OF GEORGIA
item FLANDERS, T - UNIVERSITY OF GEORGIA
item COOK, M - UNIVERSITY OF GEORGIA

Submitted to: University of Georgia Research Report
Publication Type: Abstract Only
Publication Acceptance Date: 4/1/2003
Publication Date: 10/1/2003
Citation: Martinez, N., Csinos, A.S., Webster, T.M., Bertrand, P., Waldner, M.V., Whiddon, J., Duffie, W., Flanders, T., Cook, M.J. 2003. Preliminary results of survey of weeds as hosts of tomato spotted wilt virus and impatiens necrotic spot virus around tobacco fields in Georgia: 2002 growing season [abstract]. 2002 University of Georgia Research and Extension Report. p.318-319.

Interpretive Summary:

Technical Abstract: Spotted wilt caused by tomato spotted wilt virus (TSWV) was one of the most severe diseases in Georgia during the 2002 growing season in field crops such as tobacco and peanut. Impatiens necrotic spot virus (INSV) is closely related to TSWV and is also vectored by thrips. INSV has been documented to infect peanut in Georgia and Texas, and infect tobacco in Virginia and South Carolina. Wild plant (weed) hosts are likely to contribute to disease spread by serving as reproductive hosts for the thrip vectors. A survey was conducted around 10 tobacco fields throughout Georgia to determine which weeds were naturally infected with TSWV and INSV. Each site was randomly sampled every month starting in February 2002. A total of 720 samples were collected each month. Leaf and root tissues of each plant were tested with commercial antisera by DAS-ELISA. A total of 6,030 weeds were collected between February and September 2002, comprising 114 plant species in 57 genera and 18 families. Virginia pepperweed, Carolina geranium, and common chickweed were the most common weeds infected with TSWV between February and April. Smallflower morningglory, Florida pusley, and Florida beggarweed were the most common weeds infected with TSWV between May and September.