Effects of insecticides on the five species of rice bugs causing pecky rice in Shiga Prefecture

Abstract

The controlling effects of five insecticides on adult specimens of the five species of rice bugs that cause pecky rice in Shiga Prefecture, Japan, were investigated using a spraying system. Treatment with dinotefuran and ethiprole led to more than 85% mortality after 72 h for all 5 species. Treatment with MEP led to more than 95% mortality after 72 h, except in Cletus punctiger. Treatment with ethofenprox had limited effectiveness against Eysarcoris aeneus and Trigonotylus caelestialium. Sulfoxaflor showed slow-acting properties against Cletus punctiger, Leptocorisa chinensis, and Eysarcoris aeneus.