RELATIVE EFFICACY OF ENTOMO-PATHOGENS AND BOTANICALS AGAINST MAJOR INSECT PESTS OF SOYBEAN
Department of Entomology, Rajasthan College of Agriculture, Maharana Pratap University of Agriculture & Technology, Udaipur, 313001
B. S. RANAWAT, B. S. RANA, O.P. AMETA, S.K. JAT, AND M.K. JAT
The relative efficacyof entmopathogens and botanicals against major insect pests of soybean [Glycine max (L.) Merrill] was evaluated in field trials laid out at Instructional Farm, Rajasthan College of Agriculture, Udaipur during kharif 2011. Among different treatments tested, quainalphos at 1250 ml/ha (standard check) caused maximum reduction in population of aphids, jassids, whiteflies and was significantly superior over other treatments followed by Chrysoperla zastrowi at 5000/ha and Metarhizium anisopliae at 1 x 1013 cfu/gm /ha. Quainalphos at 1250 ml/ha also gave significant reduction of tobacco caterpillar, followed by SNPV at 1.5 x 1012 POB/ha and Bacillus thuringiensis var. kurstaki at 1 kg/ha. The maximum net profit (Rs. 31980), and the highest cost benefit ratio, (1:2.00), was recorded for quainalphos at 1250 ml/ ha.