Laboratory Insecticide Tests Against the Fall Webworm1

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Microbial and chemical insecticides were tested as sprays on Hyphantria cunea (Drury). Zectran® (4-dimethyl- amino-3,5-7.ylyl methylcarbamate), pyrethrins, and DDT were significantly more effective than 4 other compounds when applied directly to the larvae. Gardona® (2-chloro- I- (2,4,5-tridllorophenyl) vinyl dimethyl phosphate) was moderately toxic. Mortality from malathion, dimethoate, and carbonyl was no different from that in the checks. Significantly higher kill was obtained with Herbicide® 90 TS (Bacillus thuringiensis Berliner) and DDT than with Biotrol®25-w (B. thuringiensis) and carbaryl in residual tests where insecticides were sprayed on foliage.

Document Type: Research Article

Publication date: June 1, 1969

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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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