Evaluation of some nonconventional insecticides against whitefly Bemisia tabaci in black gram Taggar G K*, Singh Ravinder Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana, 141004 *Email: gauravtaggar@pau.edu (corresponding author)
Online published on 21 July, 2020. Abstract The efficacy of some indigenous and non-conventional insecticides as foliar sprays for the management of whitefly, Bemisia tabaci (Gennadius) was evaluated in black gram during kharif 2018. The treatments included detergent soap, Neem Kavach 1500 ppm, Indoneem 1500 ppm, buttermilk, lisapol detergent, Actara 25 WDG (thiamethoxam)) and an untreated control. Results revealed that after 7 days of second spray, the number of whiteflies varied from 7.56–24.11 in treatments against 37.11/trifoliate leaf in untreated control. Actara 25 WDG (thiamethoxam) @ 100 g ha−1 was the most promising with 71.17% reduction in population. The non-conventional ones such as butter milk @ 13.3% v/v, lisapol detergent @ 0.5%v/v and detergent soap @ 0.4%w/v led to 26.50–27.35% reduction. Slight, but significant, reduction in adult population (compared to untreated control) was observed with the non-conventional ones suitable enough to secure satisfactory grain yields. Top Keywords Bemisia tabaci, black gram, non-conventional insecticides, butter milk, detergent, soap, thiamethoxam, neem, grain yield. Top |