Formamidine synergism of pyrethroid toxicity to twospotted spider mites (Acari:Tetranychidae) [Tetranychus urticae]

The toxicity of binary mixtures of formamidines and pyrethroids to Tetranychus urticae was investigated and compared with the toxicity of their individual components. A synergistic interaction was observed with 85 of the 104 formamidines examined in binary mixtures with cypermethrin; 29 of these imp...

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Veröffentlicht in:Journal of economic entomology 1984-01, Vol.77 (1), p.23-30
Hauptverfasser: El-Sayed, Galal N., Knowles, Charles O.
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container_title Journal of economic entomology
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creator El-Sayed, Galal N.
Knowles, Charles O.
description The toxicity of binary mixtures of formamidines and pyrethroids to Tetranychus urticae was investigated and compared with the toxicity of their individual components. A synergistic interaction was observed with 85 of the 104 formamidines examined in binary mixtures with cypermethrin; 29 of these improved toxicity 5-fold or greater. With regard to the different pyrethroids, there was evidence for suggesting that formamidine with fluvalinate, flucythrinate, and fenpropathrin, and least with fenvalerate and permethrin.
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source Oxford University Press Journals Digital Archive Legacy
subjects Biological and medical sciences
Control
Fundamental and applied biological sciences. Psychology
Generalities
Phytopathology. Animal pests. Plant and forest protection
Protozoa. Invertebrates
Tetranychidae
Tetranychus urticae
title Formamidine synergism of pyrethroid toxicity to twospotted spider mites (Acari:Tetranychidae) [Tetranychus urticae]
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