Evaluation of prallethrin aerosol to control stored product insect pests

Abstract

Three aerosol formulations containing either 0.75, 1.00 or 1.50% prallethrin as the active ingredient were tested on seven common stored product insect pest species. Application at 0.2 g AI per 28.3 m3 killed all adult Cadra cautella (Walker) and Plodia interpunctella (Hübner), and at least 99% of the adult Oryzaephilus surinamensis (L.), Trogoderma variabile (Ballion) and Tribolium castaneum (Herbst). An application rate of 0.3 g AI per 28.3 m3 killed at least 90% of the adult Stegobium paniceum (L.). An application rate of 0.5 g AI per 28.3 m3 killed approx. 93% of adult Tribolium confusum (Duv.) and approx. 73% of Attagenus megatoma (F.) larvae. All insects still alive when final mortality assessments were made were knocked down. All T. confusum that survived a single application at 0.5 g were killed by a second application 1, 2 or 3 days later.