EFFECT OF SOME 1PM TOOLS FOR THE SUPPRESSION OF POD BORER (Euehrysops cnejus) ATTACKING YARD LONG BEAN

Abstract

A study was undertaken to evaluate the effectiveness of some 1PM tools for the suppression of pod borer (Euchrysops enejus) attacking yard long bean. The experiment was conducted at Shc-c-Ilangla agricultural University. Sher-e-Bangla Nagar Dhaka. during March to September 2007 & comprised of nine treatments. Those were Tj: Mechanical control ()land picking of larvae) at 7 days interval: T2: Neem oil @ Sm!!I. of water at 7 days interval: T3 Neeni oil i 5 nil IL. of water + Mechanical control at 7 days interval: T4 Suntap 50 SP@ 3 g /1. of water at7 days interval; T5 suntap 50 SP a 3 g IL of water +Mechanical control at 7days interval; Tf, Shohicron 425 EC @2 nil / 1. of water at 7 days inrterval ; T7: Shohicron 425 EC @2 nil !!. of water +Mechanical control at 7 days interval: Tg: Neem seed kernel rit, lOg IL of water ± Mechanical control at 7 days interval & 'l'c: Untreated control. Data recorded oil infestation level , yield contributing characters & yield of yard long bean revealed that performance of treatment T3 (Ncem oil. 5 nil IL of water Mechanical control at 7 days interval) was superior throughout the season as compared to others: the lowest perlbrmance in the control treatment (Tv). The highest healthy pods in number (59.80) & weight (993.87 g). similarly the lowest infestation per plant in number (7.06 0%,) & weight (72.62 g) was recorded in 'Ii treatment. The highest healthy pod length (54.20 cm) the height length of edible portion (48.64 cm) of partially infested pod, the highest yield (22.15 ton Tha) was recorded in the 1' treatment; while the lowest healthy pod length (44.60 cm), lowest edible portion (30.11cm) oF partially infested pod and the lowest yield (14.74 ton / ha) was recorded in the control treatment (TI)). The highest benefit cost ratio (3.53) was recorded in the T treatment while the lowest benefit cost ratio (1.23) in T8 treatment.