01 Oca 2026 Perşembe
Evaluation of various ipm packages against tobacco caterpillar, Spodoptera litura (Fabricius) on mungbean in southern region of Bangladesh
Abstract : The experiment was conducted during 2021-22 at southern region of Bangladesh to evaluate the efficacy of various IPM packages against Tobacco caterpillar, Spodoptera litura (Fabricius) on mungbean using a randomized complete block design (RCBD) with three replications. The treatments comprised 5 treatments, viz. T1 = IPM package-1: Installing sex pheromone trap + Success 2.5 SC (Spinosad) + SNPV, T2 = IPM package-2: Installing sex pheromone trap + Antario (Bacillus thuringiensis + Abamectin) + SNPV, T3 = IPM package-3: Installing sex pheromone trap + Siena 6 WG (Abamectin + Emamectin benzoate) + SNPV, T4 = Farmers’ practice (Recommended practice): Voliam flexi 300 SC (Thiamethoxam + Chlorantraniliprole) and T5 = Untreated control. IPM packages showed significantly different performance against Spodoptera litura on mungbean. Results indicated that the highest percent reduction of Spodoptera litura population (71.54% at vegetative, 69.45% at flowering and 70.60% at podding stage) was found in IPM package-1 and over control, the highest (58.17%) reduction of pod infestation observed by the same package while the lowest (43.92%) reduction of pod infestation was found in Farmers’ practice. The highest yield (1.63 t ha-1) was also obtained from IPM package-1 which was statistically similar to all the IPM packages followed by farmer’s practice and untreated control. Maximum (1.54) marginal benefit cost ratio (MBCR) was returned from Farmers’ practice followed by (1.01) IPM package-1. Although IPM package-1 provided the highest yield and return followed by IPM package-3 but farmer’s practice gave maximum MBCR because of high cost of IPM components reduced the profit margin of IPM packages. So, considering environment eco-friendliness, IPM package-1 would be the best package for controlling Spodoptera litura of mungbean.