On the Effect of DDVP Strip to Stored Product Pests on Semi-field Condition

Abstract

Under three rooms with different conditions of air, the effects of DDVP resin strips, containing 18.5% DDVP, were estimated te both larvae and adults of the flour beetle, Tribolium castaneum and larvae of the Indian-meal moth, Plodia interpunctella. Adults of the northern house mosquito, Culex pipiens were also employed as a test insect. To the adults of them the strips showed sufficient effects even on the condition of regular ventilation, while the efficacy of strips to larvae was unsatisfactory even on the condition of air-tight.