Efficacy of certain biorationals against shoot and fruit borer (Leucinodes orbonalis Guenee) of brinjal (Solanum melongena L.)

An experimental field was carried out at the Central field, Department of Entomology SHUATS, Allahabad during Kharif of 2016. Eight treatments were evaluated against Leucinodes orbonalis i.e., Cypermethrin 25% EC @ 2 ml/lit, Spinosad 45% SC @ 0.5 ml/lit, Neem oil @ 20 ml/lit, Pongamia oil @ 30 ml/lit, NSKE @ 50 gm/lit, Garlic bulb extract @ 50 ml/lit, Neem leaf extract @ 50 ml/lit and Untreated control. Three sprays were carried out which revealed that among the chemical insecticides and biopesticides Spinosad 45 SC, Cypermethrin 25 EC, Neem oil, NSKE, Pongamia oil recorded the minimum shoot infestation i.e. ( 6.87), (8.57), (9.27), (9.60), and (10.93) percent respectively. The highest yield and benefit cost ratio was recorded in Spinosad 45 SC (195.22 q/ha and 1:7.06 respectively).