MANAGEMENT PRACTICES ON THE INCIDENCE AND REDUCTION OF THE MAJOR INSECT PESTS OF SOYBEAN

The experiment was conducted at the experimental Field of Sher-e-Bangla Agricultural University, Dhaka during the Kharif season from April, 2012 to August, 2012 to study the effect of management practices on the incidence and reduction the major insect pests of soybean. The experiment comprised with six different treatments, viz., T₁: Neem oil @ 3ml/L water, T₂: Ripcord 10EC @ 2ml/L water, T₃: Aktara 25 WG @ 0.3 mg/L water, T₄: Sumialfa 5EC @ 2ml/L water, T₅: Marshal 20EC@ 2ml/L water, and T₆: Control. The experiment was done in Randomized Complete Block Design (RCBD) with three replications. Among the insect pests of soybean, whitefly, jassid, pod borer, and leaf roller were abundant than other pests. However, Sumialfa 5EC @ 2ml/L of water was supplementary efficient on major pests as well as the more reduction of major pests were recorded at different days after sowing on the basis of control treatment. Those results indicate that the Sumialfa 5EC @ 2ml/L of water showed the best performance to manage the major pest of soybean.