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Cabbage Looper: Ovicidal Activity of Pesticides in the Laboratory

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Commercial formulations of 23 insecticides and fungicides were evaluated in the laboratory for ovicidal activity against 2 indigenous strains of the cabbage looper, Trichoplusia ni (Hübner). The laboratory strain had been reared continuously for ca. 3 yr while the field strain had been reared for 3–4 generations during the experiment. The field strain was more tolerant to the ovicides than the laboratory strain. Materials with most ovicidal activity were permethrin, Pydrin® (cyano (3-phenoxyphenyl) methyl-4-chloro-alpha-(l-methylethyl) benzeneacetate), methomyl, and chlordimeform.

Other pesticides with lesser ovicidal activity (from lowest to highest LC50 of the field strain) were Mobil 9087 (l-ethoxy-4-{ 1-[4-(I, I-dimethylethyl) phenyl]-2-nitrobutyl} benzene), UC 51762 (dimethylester of N, N-[thiobis [(methylimino)carbonyloxy]] bisethanimidothioic acid), mevinphos, sulprofos, monocrotophos, and profenofos.

Pesticides with no ovicidal activity were acephate, benomyl, chlorothionil, diflubenzuron, endosulfan, maneb, methamidophos, oxamyl, parathion, tetradifon, tetrasol, and triphenyl tin hydroxide.

Document Type: Research Article

Publication date: February 1, 1979

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  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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