Insecticide susceptibility of Frankliniella intonsa (Trybom) from flat areas of Gifu Prefecture, Japan

Abstract

We investigated the susceptibility of second instar larvae and adult flower thrips (Frankliniella intonsa [Trybom]) collected from flat areas of Gifu Prefecture to 12 insecticides. Among the insecticides registered for controlling “thrips” on strawberries, spinosad, spinetoram, and fluxametamide demonstrated the highest efficacy against flower thrips. Conversely, spirotetramat and flometoquine were the least effective among the tested insecticides. Furthermore, among the insecticides not registered for thrips control on strawberries, emamectinbenzoate and chlorfenapyr show potential efficacy against flower thrips.