Vol. 11, Issue 3 (2022)

Author(s):
Amin Kaushal K, Patel JR, Chavada KM, Vaghela Bhavyarajsinh B and Vora Pritam D

Abstract:
Investigation was carried out on management of Helicoverpa armigera (Hubner) on pigeon pea, during the kharif 2019-20 at Agronomy Instructional Farm, S. D. Agricultural University, Sardarkrushinagar to evaluate the efficacy of different eight insecticides. Among the various insecticides the lower larval population of H. armigera was observed when crop was treated with Chlorantraniliprole 18.5 SC (0.006%) which was remain at par with Flubendiamide 480 SC (0.050%), Emamectin benzoate 5 SG (0.003%) and Lambda-cyhalothrin 5% EC (0.005%). The higher pod yield was obtained when crop was treated with Chlorantraniliprole 18.5 SC (0.006%) however, it has remained at par with Flubendiamide 480 SC (0.050%). The lower pod yield was obtained in untreated crop, which was remained at par with Azadirachtin 1500 ppm (0.00075%), Beauveria basssiana 1.15 WP (2 x 10⁸ cfu/gm) (0.0046%) and HaNPV (1 x 10¹⁰ POB/ml) (250 LE/ha). The highest Protection Cost: Benefit Ratio (PCBR) was obtained in plots treated with Emamectin-benzoate 5 SG (0.003%) (PCBR=1:10.77) and quinalphos 25 EC (0.05%) (PCBR=1:9.20). The lowest (PCBR 1:0.98) was calculated in the treatment of Beauveria basssiana 1.15 WP [(2 x 10⁸ cfu/gm) (0.0046%)].