Peanut (Arachis hypogaea L.) leaf with concentric ring spots caused by tomato spotted wilt tospovirus (TSWV).
Photograph courtesy Albert Culbreath, Jim Todd, and Herb PilcherDepartment of Plant PathologyThe University of Georgia, Coastal Plain Experiment StationP.O. Box 748, Tifton GA 1793-0748
Background: During the last 10 years, thrips-vectored tomato spotted wilt tospovirus (TSWV) has become a major limiting factor in the production of peanut in the southeastern United States. TSWV causes a range of symptoms on peanut, from mild mottling and bronzing to striking geometric rings on foliage to severe stunting of the entire plant and, in severe cases, to plant death. Peanut pegs, pods, and kernels also may be stunted, deformed, and discolored. Management of spotted wilt is dependent largely upon an integrated regime of using moderately resistant cultivars, manipulating planting dates, and establishing good stands of rapidly growing seedlings. Additional images of spotted wilt symptoms on peanut and information on management of spotted wilt in peanut are available at http://sacs.cpes.peachnet.edu/spotwilt
APS publication number: IW00005
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