author(s)
Md. Nur Alam Miah, Md. Ramiz Uddin Miah, Md. Zinnatul Alam, Md. Mofazzal Hossain and Md. Enamul Haque

abstract
The field experiment was carried out at Bangabandhu Sheikh Mujibur Rahman Agricultural University farm, Gazipur during 2015-16 with four replications and six treatments of biopesticides against scale insects and mealybugs of sugarcane. The package P₆ (Sungor 40EC @ 1ml 5 l^-1 of water applied) produced maximum tillers (288.25 x10³ ha^-1), millable cane (148.50 x10³ ha^-1) and yield (118.80 t ha^-1) followed by P₅ (seed treated with 30% fermented cattle urine and 15% neem seed kernel extract solution and sprayed at fortnight interval starting from vegetative stage to harvesting + detrashing of older leaves) 286.00 x10³ ha^-1, 145.50 x10³ ha^-1 and 116.40 t ha^-1, respectively. Among the packages, the efficacy might be ranked as P₆>P₅>P₂.The highest benefit cost ratio (BCR) was obtained from package P₆ (3.47) followed by P₅ (3.42). The study revealed that, the package P₅ was the most profitable considering non-chemical management, yield, low cost, environmental safety and BCR.