Effect of different varieties maturity stages and spray schedules based management of Helicoverpa armigera (Hubner) on pigeonpea

Abstract

To study crop phenology based management of pod borer complex of pigeonpea in four different cultivars in split plot design, two consecutive sprays of emamectin benzoate 5% SG @ 4.4 gm/10 liter water followed by flubendiamide 39.3% SC @ 3.9 ml/10 liter water at 15 days interval were taken at various crop growth stages. Four cultivars of pigeon pea viz., BDN-711 (early), BSMR-736 (late), BSMR-853 (late) and BSMR-716 (mid-late) were observed under field condition. The results revealed that in BDN-711 spraying at 50% bud formation stage was superior treatment where as in BSMR-736, BSMR-853 and BSMR-716 minimum incidence of H. armigera was recorded at flower initiation stage. The incidence of E. atomosa was recorded minimum, when the crop was sprayed at 50% flowering stage in all four cultivars.