EVALUATION OF DIFFERENT TRAPS AND SOME NONCHEMICAL OPTIONS AGAINST THE INFESTATION OF FRUIT FLY AND RED PUMPKIN BEETLE ON RIDGE GOURD

Abstract

The experiment was conducted in the field of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka during rabi season from November, 2017 to April, 2018 to find out the efficacy of different traps and some nonchemical options against insect pest of ridge gourd. There were six treatments in

the

study comprising with T 0 = Control, T 1 =Poison bait trap, T 2 = Pheromone trap, T 3 = Banana pulp trap, T 4 = Neem oil, T 5 = Covering fruits with polythene. The experiment was laid out in Randomized Complete Block Design (RCBD) with four replications. Among the treatments, covering fruits with polythene (T 5 ) showed the lowest per cent of fruit infestation per plot (5.64%) over control followed by neem oil (T 4 ) (12.90%) and T 5 showed the highest yield of total fruit weight per plot (7.48 kg) over control followed by T 4 (6.12 kg). In case of per cent increase of healthy fruit weight over control T 5 showed the highest result (939.24 %) followed by T 4 (685.12 %) at late fruiting stage of ridge gourd against fruit fly and red pumpkin beetle. Finally, the highest yield increase over control was achieved in covering with polythene, whereas the lowest increase showed in banana pulp trap over control. All traps and non-chemical options have great impact on ridge gourd yield and significant impact on fruit fly and red pumpkin beetle reduction.

Key word: Ridge gourd, Fruit fly, Red pumpkin beetle, Poison bait, Banana pulp trap, Pheromone trap, Covering fruits with polythene.