EFFECTIVENESS OF TRAPS AND INSECTICIDES FOR THE MANAGEMENT OF CUCURBIT FRUIT FLY

Abstract

A field experiment was carried out during December 2016 to March 2017 at Sher-e-Bangla Agricultural University farm to find out the comparative effect of traps and insecticides for the management of cucurbit fruit fly, Bactrocera cucurbitae on cucumber. Eight treatments, viz. T1 (bait trap), T2 (pheromone trap), T3 (spraying Voliam flexi @ 0.5 ml/liter water at 10 days interval), T4 (bait trap + pheromone trap), T5 (bait trap + insecticide), T6 (pheromone trap + Voliam flexi), T7 (bait trap + pheromone trap + Voliam flexi) and T8 (untreated control) were used for the management of cucurbit fruit fly infesting cucumber. Sevin 85SP was used with mashed sweet gourd in bait trap. The experiment was laid out in Randomized Block Design (RCBD) with three replications. Results revealed that the highest healthy and total fruit yield (18.24 t ha-1 and 21.22 t ha-1 respectively) was found from T7 (bait trap + pheromone trap + Voliam flexi) and the lowest healthy and total fruit yield (5.21 and 14.44 t ha-1 respectively) was found from control treatment (T8). The lowest infested fruit yield (2.68 t ha-1) was obtained from T7 (bait trap + pheromone trap + Voliam flexi). In case of percent reduction of infestation over untreated control, T7 consisting bait trap + pheromone trap + Voliam flexi, gave the best performance at all growth stages. Spraying voliam flexi 300SC @ 0.5 ml/liter water at 10 days interval in combination with bait and pheromone traps (T7) was the most effective treatment for the management of cucurbit fruit fly infesting cucumber.