Abstract
In this study, effects of five different insecticides used in orchards on mortality of the parasitoid Itoplectis maculator of the leafroller pests [Archips rosana (Linnaeus, 1758) (Lepidoptera: Tortricidae)] were evaluated. Insecticides were applied to adult parasitoids in particular doses using a petri dish bioassay technique. Experiments were performed in five replicates and observed deaths were recorded periodically for 24 hours. Diazinon, Dichlorvos and Deltamethrin caused a 100% mortality rate at the end of the first 8-hour period, whereas Lambda-cyhalothrin and Alpha-cypermethrin caused the same mortality at the end of 24 hours. The ranking according to their effects on duration of mortality was Dichlorvos>Diazinon>Deltamethrin>Alpha-cypermethrin>Lambda-cyhalothrin. All these information will contribute to the development of biological control methods in orchards against leafroller pests.
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