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Relative toxicity of some insecticides to the adult of melon fruit fly dacus cucurbitae

, : Relative toxicity of some insecticides to the adult of melon fruit fly dacus cucurbitae. Journal of Entomological Research (New Delhi) 2(1): 114-116

Toxicity of residual films of 7 insecticides, i.e., carbaryl, DDT, endosulfan, fenthion, malathion, trichlorfon and tetrachlorvinphos was evaluated against the adult melon fly, D. cucurbitae Coq. Order of toxicity in the case of fresh residues was: fenthion, malathion, tetrachlorvinphos, trichlorfon and endosulfan. Carbaryl and DDT were practically ineffective. Toxicity of endosulfan residues was lost after 24 h. Trichlorfon was fairly toxic up to 72 h but lost toxicity on day 7. The order of remaining toxic insecticides was approximately the same as obtained in fresh residues.


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