ECO-FRIENDL Y MANAGEMENT OF SHOOT AND FRUIT BORER (Earias vittella FAB.) USING BOTANICALS AND BIO-CONTROL AGENT

Abstract

A study was conducted at the Sher-e-Bangla Agricultural University, Bangladesh during May 2011 10 August 20 II to evaluate the effectiveness of botanicals and parasitoid for the management of okra shoot and fruit borer (Earias vittella Fab.). The experiment was laid out in a Randomized Complete Block Design (RCBD) comprising eight treatments viz., TI ; Neem oil @ 4mlll of water sprayed at 7 days interval, T2; Neem seed kernel extract @50 g/l of water sprayed at 7 days interval, TJ; Neem leaf extract @ 200gll of water at 7 days interval, T. ; Trichogramma evanescens @ 0.5g1plot at 7 days interval, T, ; Trichogramma evanescens @ 0.25g1plot at + neem oil @ 4mlll of water sprayed at 7 days interval, T6 ; Trichogramma evanescens @ 0.25g1plot + neem seed kernel extract @ 50gll sprayed at 7 days interval, T7; Trichogramma evanescells @ 0.25g1plot + neem leaf extract @ 200gll of water at 7 days interval, Ts ; Untreated control. Among the treatments T, (Spraying of neem oil @ 4mlll of water + release of Trichogramma evanescens egg parasitoid @ 0.25g1plot at 7 days interval) performed the best in terms of percent reduction of shoot infestation (96.50), flower bud infestation (83.33%) and fruit infestation by weight (86.90%).