EVALUATION OF SOME PROMISING MANAGEMENT APPROACHES AGAINST SUCKING INSECT PESTS OF BRINJAL

Abstract

A field experiment was conducted in the experimental field of Sher-e-Bangla Agricultural University to find out some new dimension management approaches against sucking insect pests of brinjal, cultivated during Rabi season (November, 2021 to February, 2022). The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. The experimental treatments were T 1 = Fenpropathrin (Danitol 10EC) @ 1ml/L of water + Clean cultivation; T 2 = Abamectin (Vertimec 1.8 EC) 1.2 ml/ L of water+ alternating spray of detergent mixed soapy water @ 5g/L of water; T 3 = Imidacloprid (Admire 20 SL) @ 0.5 ml/L of water+ alternating spray of Bioneem Plus @ 1m/L of water; T 4 = Diafenthiuron (Polo 500 SC) @ 1ml/L of water + Clean cultivation; T 5 = Untreated control. Treatment T 3 contributed to reduce the highest number of leaf hopper, aphid, whiteflies, mealybug, percent leaf infestation and plant infestation by leaf hopper, aphid, whiteflies and mealybug were 5.72 leaf hopper/plant, 2.79 aphid/plant, 1.14 whitefly/plant, 2.12 mealybug/plant, 13.45% leaf/ five plant, 9.20% leaf/five plants, 5.66% leaf/five plants, 13.89% plant/plot, 13.89% plant/plot, 8.33% plant/plot, 8.33% plant/plot respectively. T 3 also showed the best performance for single fruit weight (34.66 g) and yield (25.57 ton/ha) of brinjal.