Synergism Studies with Binary Mixtures of Permethrin plus Methyl Parathion, Chlorpyrifos, and Malathion on European Corn Borer Larvae12
- 1 February 1982
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Economic Entomology
- Vol. 75 (1) , 28-30
- https://doi.org/10.1093/jee/75.1.28
Abstract
Binary mixtures of permethrin with methyl parathion, chlorpyrifos, and malathion, respectively, in ratios of 9:1, 4:1, 2.3:1, and 1.5:1 insecticide: permethrin were tested for synergistic activity against larvae of Ostrinia nubilalis (Hübner). Statistically significant (P = 0.05) synergistic activity was exhibited by all tested mixtures of methyl parathion + permethrin and chlorpyrifos + permethrin. On the basis of LD50 values, mixtures of methyl parathion + permethrin were ca. 14- to 89-fold more toxic to the larvae than methyl parathion and ca. 5- to 34-fold more toxic than permethrin. Mixtures of chlorpyrifos + permethrin were ca. 25- to 29-fold more toxic than chlorpyrifos and ca. 5-fold more toxic than permethrin. Synergism was not exhibited by the mixtures of malathion + permethrin.This publication has 1 reference indexed in Scilit:
- Dosage-Mortality Data for Five Insecticides on Three European Corn Borer Ecotypes1234Journal of Economic Entomology, 1980