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Influence of Treatment Technique on the Temperature-Toxicity Relationships of cis- and trans-Permethrin in the Cabbage Looper (Lepidoptera: Noctuidae)

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Abstract:

The toxicity of cis- and trans-permethrin to third instar cabbage loopers, Trichoplusia ni (Hübner), was determined at 15.6, 26.7, and 37.8°C by two treatment techniques. Whether applied topically or incorporated into the diet of the larvae, both isomers showed a negative temperature coefficient of toxicity between 15.6 and 37.8°C. However, temperature coefficients between 15.6 and 26.7°C and between 26.7 and 37.8°C varied. Data indicate that the method of application of a pyrethroid can affect its temperature-toxicity relationship.

Document Type: Research Article

Publication date: February 1, 1988

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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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