Field tests for control of grape leafhoppers resistant to insecticides
California Agriculture 15(7):13-14.
Published July 01, 1961
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The grape leafhopper in San Joaquin Valley vineyards has developed resistance to DDT, to malathion, and to Sevin. Resistance problems are most severe in the Orange Cove area, and extend beyond Orosi and Dinuba in Tulare County and beyond Reedley in Fresno County.