Control of Thrips and the Cotton Fleahopper with Sprays in Central Texas in 19571

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The efficacy of several insecticides against thrips, Frankliniella sp., and the cotton fleahopper, Psallus seriatus (Reut.), infesting cotton was evaluated in field experiments. The addition of methyl parathion or malathion to toxaphene did not improve control of thrips over toxaphene alone. Toxaphene at 0.75 and 1.5 pounds, dieldrin at 0.1 pound, methyl parathion at 0.25 pound, Guthion at 0.13 and 0.26 pound, Sevin (l-naphthyl-N-methyl carbamate) at 0.5 pound, and .Monsanto CP-7769 (diethyl (ethylthiomethylidyne)tripos phonic acid) at 0.25 pound per acre were effective against these pests. Toxaphene at 0.75 and 1.5 pounds, Guthion at 0.25 pound, and Sevin at 0.5 pound per acre gave good control of the cotton fleahopper. Thiodan at 0.5 pound per acre gave poor control of both insects.

Document Type: Research Article

Publication date: August 1, 1958

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