Toxicological studies on cutworms. 8. Toxicity of three insecticides to the various stages in the development of the darksided cutworm.
1971
Laboratory tests were conducted to determine the toxicity of 3 insecticides. DDT, Dursban® ( O,O -diethyl O -(3,5,6-trichloro-2-pyridyl) phosphorothioate), and galecron® ( N′ -(4-chloro- O -tolyl) N′,N′ -dimethylformamidine), to the various stages in the life cycle of Euxoa messoria (Harris). The insecticides were applied topically using a Potter spray tower. The results indicated that DDT was effective against the early larval stages, but ineffective against the later larval stages, eggs, pupae, and adults. Dursban was effective against eggs, early larval stages, and adults, but ineffective against the later larval stages and pupae. Galecron was highly selective and was effective only against the eggs.
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