Field testing of insecticides against spotted wing drosophila (SWD) in viticulture

Abstract: Management strategies to control spotted wing drosophila (SWD) in viticulture are currently under investigation. In South Tyrol, Drosophila suzukii (Matsumura) is responsible of considerable damages on the local variety Vernatsch. Field trials with the active ingredients spinosad, cyantraniliprole and chlorpyrifos-methyl have been carried out to evaluate the insecticides efficacy in a vineyard with high pest pressure. Both spinosad and chlorpyrifos-methyl showed a good efficacy in controlling the pest. The results confirm the importance of monitoring the oviposition on grapes for a correct timing of treatments.