Evaluation of Chemical and Microbial Materials for Control of the Cabbage Looper1
A number of chemical insecticides and some formulations of commercially produced microbial preparations containing Bacillus thuringiensis var. thuringiensis Berliner were applied as spays and/or dusts to cabbage, cauliflower, and bead lettuce for control of the cabbage looper, Trichoplusia ni (Hbn.). Only one of the chemical materials, General Chemicals 3583® (diethyl- 1-(2,5-dichlorophenyl)-2-chlorovinyl phosphate) appeared to be comparable to the standards, DDT-toxaphene and parathion. However, several insecticides, including Dibrom® (1,2-dibromo- 2,2-dichloroethyl dimethyl phosphate), ethion Guthion® (O,O -dimethyl S-4-oxo-1,2,3-benzotriazin-3 (4H)-ylmethl phosphorodithioate), malathion, Perthane® (1,1-dichloro-2,2-bis (p-ethylphenyl)ethane), Thiodan® (6,7 ,8,9, 10, 10-hexachloro-1,5, 5a, 6,9,9a-hexahydro-6,9-methan0-2,4,3-henzodioxathiepin 3-oxide), and Sevin® (1-naphthyl methylcarbamate) gave fair results. The microbial materials from different manufacturers varied in their effectiveness. Two gave good control of all sizes of cabbage loopers and displayed satisfactory residual activity. At the dosages used, they were as effective in quickness of kill and residual activity as the best of the chemical insecticides.
Document Type: Research Article
Publication date: February 1, 1961
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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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