MANAGEMENT OF MAJOR INSECT PESTS OF MAIZE IN RABI SEASON

Abstract

The study was conducted in the research field of Sher-e-Bangla Agricultural University, Dhaka in order to study the major insect pests of maize and their management. There were seven treatments and three replications used in a randomized complete block design (RCBD). The treatments were T 1 (Success @ 0.5 ml/L of water at 7 days interval); T (Matrine @ 1 ml/L of water at 7 days interval); T 3 (Virtaco @ 0.2 g/L of water at 7 days interval); T (Neem oil @ 5 ml/L of water with detergent at 7 days interval); T (Emamectin Benzoate @ 1 ml/L of water at 7 days interval); T 6 viii 5 (Seed treatment with Fortenza+Sunfezin @ 0.2 g/L of water at 7 days interval); and T 7 (untreated control). Treatment T showed the lowest fall armyworm infestation 0.11 larvae per plot during 3 days after spray, 0.17 larvae per plot during 7 days after spray. Similarly, Treatment T 6 6 showed the lowest aphid infestation 14.54 aphids per piot during 3 days after spray, 9.06 aphids per plot during 7 days after spray. Lowest plant infestation (1.91% per plot) of stem borer was obatained from treatment T . in case of % dead heart, Fortenza+Sunfezin showed the lowest infestation i.e. 1.60%. The lowest number of insects was observed in treatment T 6 6 and produced the maximum yield. Seed treatment with Fortenza+Sunfezin was the most effective insecticide against pest complex of maize.