Toxicities of insecticides against flower thrips collected from strawberries in Nara Prefecture

Abstract

The effects of five insecticides were investigated on five populations of flower thrips, Frankliniella intonsa (Trybom), collected from strawberry greenhouses in Nara Prefecture. Spinosad was the most effective insecticide in terms of corrected mortality and leaf damage. Cyantraniliprole showed low corrected mortality but low leaf damage. Acetamiprid results differed in terms of corrected mortality and leaf damage according to thrip population. Flometoquin and spirotetramat showed low corrected mortality and high leaf damage. These results suggest that spinosad and cyantraniliprole are effective insecticides against flower thrips, F. intonsa, from strawberry plants in Nara Prefecture.