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Rates of transmission of tomato spotted wilt tospovirus (TSWV) by tobacco thrips, Frankliniella fusca Hinds, to imidacloprid-treated and untreated tomato, pepper and tobacco were measured in greenhouse and small-plot field trials. The incidence of TSWV was reduced in greenhouse assays with all 3 crops receiving a soil application of imidacloprid at a rate of 9.9g [AI]/1000 plants. Levels of TSWV were...