| Abstrakt: |
The pea weevil, Bruchus pisorum L. is a major insect pest of Pisum sativum L. worldwide and current control practices mainly depend on the use of chemical insecticides, but a considerable number of active substances of pyrethroids have shown insecticide resistance. Therefore, the aim of this study was to determine the risk of developing B. pisorum resistance to widely used pyrethroids in forage pea. The Method of testing of contact toxicity of the preparations in application to the substrate was used. It was found that the Fury, Karate Zeon, and Decis insecticides exhibited rapid initial action and high toxicity against pea weevil adults and are suitable for control before weevil oviposition. The cypermethrin and chlorpyrifos-ethyl- based Nurelle E showed unsatisfactory toxicity and the presence of resistance to pea weevil. The correlation coefficient equals 0.877, indicating a moderately strong relationship between toxicity effect and time. [ABSTRACT FROM AUTHOR] |
