Toxicological Studies on the Egyptian Cotton Leaf worm, Prodenia litura. VI. Potentiation and Antagonism of Organophosphorus and Carbamate Insecticides1

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The toxicity of 11 organophosphorus and 2 carbamate insecticides was determined by topical application to 3rd in star larvae of the Egyptian cotton leaf worm, Prodenia litura F. Several organophosphorus insecticides were potentiated when pairs were applied jointly. Most of the potentiated pairs contained I strong and another weak inseccticide. There were also antagonistic pairs as well as other pairs producing only additive effect when jointly applied. Most pairs that showed potentiation hy contact showed it also when applied as stomach poisons.

Several pairs of 1 organophosphorus and 1 carbamate insecticide, either carbaryl or UC 10854® (m-isopropylphenyl methyl carbamate) , were potentiated as well.

Document Type: Research Article

Publication date: April 1, 1966

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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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