Effects of Chemicals on European Corn Borer Eggs1

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The toxic effects of chemicals on the eggs of the European corn borer (Ostrinia nubilalis( (Hübner)) (Lepidoptera: Pyralidae) were studied. The organic -phosphate insecticides Diazinon® ((0,0- diethyl 0-(2-isopropyl-4-methyl-6-pyrimidinyl) phosphorothioate), Dibrom® (1,2-dibromo-2,2-dichloroethyl dimethyl phosphate), Dylox® (O,O-dimethyl 2,2,2-trichloro-1-hydroxyethyl phosphonate), ethion, Guthion® (O,O-dimethyl S-(4-oxo-1,2,3- benzotriazin-3-( 4H)-ylmethyl) phosphorodithioate), parathion, Phosdrin® (a mixture of the alpha isomer of 2-carbomethoxy-1- methylvinyl dimethyl phosphate (not less than (60%) and related compounds (not more than 40%)), and oil, when used at various rates were found to affect hatching of the eggs under laboratory conditions. When Diazinon, Dibrom, and Guthion were later used alone and in various combinations with DDT, Sevin® (1- naphthyl N-methylcarbamate) and Thiodan® (6,7,8,9,10,10- hexachloro-1 , 5,5a, 6,9, 9a-hexahydro-6, 9-methano-2, 4,3- benzodioxathiepin- 3-oxide) on green peppers in the field, DDT, Guthion, and Sevin significantly reduced the corn borer infestation.

Document Type: Research Article

Publication date: October 1, 1962

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