Bioefficacy of insecticides against maize stem borers

Bioefficacy of ten insecticides viz., dichlorvos 76 EC, dimethoate 30 EC, acephate 75 WP, chlorofluzuron 25 EC, fipronil 5 SC, chlorantraniliprole 20 SC, phorate 10 G, neemazal (1.2%), carbofuran 3G and emamectin benzoate 5 SG were evaluated against maize stem borers, Chilo partellus and Sesamia inferens during kharif, 2013. The observations based on leaf injury, pest infestation, stem tunneling and grain yield revealed that whorl application of carbofuran 3G @ 7.5 kg ha⁻¹ and phorate 10G @ 7.5 kg ha⁻¹ proved best followed by emamectin benzoate 5SG (0.2g l⁻¹) were found highly effective and economical in reducing the stem borers damage in maize.