EFFECTIVENESS OF SOME INSECTICIDES ON INFEST ATION AND YIELD AGAINST BRINJAL SHOOT AND FRUIT BORER

Abstract

An experiment was conducted at the Sher-e-Bangia Agricultural University, Bangladesh during December 2005 to May 2006 to evaluate one organophosphate. one carbamate and two synthetic pyrethroid insecticides for their effectiveness to control brinjal shoot and fruit borer (Leucinodes orbonalis Guenee). The study comprising five treatments including a control and laid out in a Randomized Complete Block Design (ReBD). Among the treatments, T, (marshal 20EC applied at 28 days after transplanting and applied at 7 days interval) performed best in terms of reduction of shoot and fruit infestation, on the other hand it increased fruit yield. It gave 65.18% reduction in shoot infestation and 95.38% reduction in fruit infestation over control with the highest yield of24.55 t/ha.