Field Evaluation of Ecofriendly Insecticides Against Brinjal Shoot and Fruit Borer, Leucinodes orbonalis Guen*

Nine insecticides were evaluated against brinjal shoot and fruit borer, Leucinodes orbonalis Guen. The treatment of cypermethrin (0.007%) proved most effective followed by carbaryl (0.20%) and endosulfun (0.07%). Nimbecidine (1.51/ha) was found least effective in reducing shoot and fruit infestation followed by Neemgold (1.21/ha) and Bacillus thruingiensis (B.t.) alone (0.012%), whereas, B.t. + carbaryl (0.012 + 0.10%), B.t. + endosulfan (0.012 + 0.035%) and malathion (0.05%) existed in middle order of efficacy. The maximum yield of marketable brinjal fruit and minimum avoidable loss were obtained in cypermethrin followed by carbaryl and endosulfuan, whereas, minimum yield was recorded in the treatment of Nimbecidine. The highest benefit/cost ratio was computed in cypermethrin (21.18) and lowest (2.82) in the treatment of B.t. + carbaryl.