FIELD EFFICACY OF BIO-PESTICIDES AGAINST THRIPS TABACI (LINDEMAN) IN ONION
Department of Entomology, College of Agriculture Junagadh Agricultural University Junagadh - 362001
U.S. JOSHI, M.N. KAPADIA AND G.M. PARMAR
Studies on the effect of three fungal and one bacterial bio-pesticide against onion thrips, T. tabaci were conducted at Agronomy Farm, Junagadh Agricultural University, Junagadh during 2006-07. Spinosad (0.009%), endosulfan (0.07%)Â andÂ spinosad (0.0045%) + endosulfan (0.035%) were the most effective in reducing the population of thrips. Combinations ofÂ B. bassiana @ 1.0 kg/ha + endosulfan (0.035%) and V. lecanii @ 1.0 kg/ha + endosulfan (0.035%) were next in order ofÂ efficacy, whereas, V. lecanii @ 2.0 kg/ha, B. bassiana @ 2.0 kg/ha and P. fumusoroseus @ 2.0 kg/ha alone were least effectiveÂ in reducing the population of thrips.