MANAGEMENT OF VEGETABLE LEAF MINER IN TOMATO USING BIOPESTICIDES AND CHEMICAL INSECTICIDES

Abstract

The experiment was conducted in the experimental central field of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Bangladesh during the period from October 2018 to March, 2019 to evaluate the abundance of vegetable leaf miner and their control measures in the tomato. The experiment was comprised in a Randomized Complete Block Design ( RCBD) with three replications .The treatments, viz. T of water, T 2 = Avermectin 1.8EC @ 1.0 ml L -1 of water, T 3 1 = Tracer 45SC @ 0.5 ml L = Calden 45SC @ 2.0 ml L of

water, T 4 = Confidor 17.80 SL @ 0.5 ml L -1 of water,T 5 = Bombard 10EC @ 1.0 ml L of water, T 6 = Sevin 85WP @ 2.0 g L -1 of water, T 7 = Neem oil @ 3.0 ml L -1 = Untreated control were applied. Infestation status and number of mine leaf of water and T -1 due to attack of vegetable leaf miner (Lyriomyza sativa) was found in the experimental field. It was observed that T treatment was best in controlling vegetable leaf miner infestation in tomato based on the lowest percent of leaves infestation during early, mid and late stages 2.47%, 2.08%, 1.75% 4 was observed in T treatment where the highest percent of leaves infestation (15.16%, 13.41%, 12.18%) was observed in T 4 8 treatment. The lowest number of mine leaf was

observed in T 4 (spraying of 0.5 ml L -1 of Confidor 17. 80SL at 15 days interval) and the highest number of mine leaf -1 was observed in T (untreated control) treatment. The lowest total fruit yield (18.74 t ha -1 ) was observed T 8 8 treatment while the highest total fruit yield (22.20 t ha -1 ) was observed in T 4 treatment. In T treatment provided the best performance in yield production of the experiment.