Bio-efficacy of multiple insecticides against shoot and fruit borer of brinjal (Leucinodes orbonalis Guenee) and their impact on fruit yield

Abstract

The experiment on the bioefficacy of six insecticidal treatments comprising Dimethoate 20% + Cypermethrin 3% EC at four different doses viz., 114.8, 123.6, 132.5 and 141.3 g a.i./ha along with single dose of Dimethoate 30% EC (200g a.i./ ha) and Cypermethrin 25% EC (50 g a.i./ ha) against shoot and fruit borer, Leucinodes orbonalis was conducted at I.G.K.V., Raipur during Rabi, 2017. Based on the two spray, it is concluded that the application of T4, Dimethoate 20% + Cypermethrin 3% EC @ 141.3 g a.i./ha found to be the most effective treatment. It was followed by T3, Dimethoate 20% + Cypermethrin 3% EC @ 132.5 g a.i./ha in terms of mean mortality of shoot and fruit borer, Leucinodes orbonalis and also recorded higher marketable yield.