MEENA YADAV, N.Y. CHANU,A.K. MEENA, RAJENDRA NAGAR AND It SWAMINATHAN

A laboratory experiment was carried out to evaluate the anti-feeding activity of NSKE (5%) and Azadirachta indica oil (0.3%) on tobacco caterpillar, Spodoptera litura infesting different soybean varieties viz., MAUS-81, JS-335, RKS-24, JS-95-60, RKS-45, MAUS-47, RKS-113 and MAUS-61. NSKE (5%) showed relatively more pronounced anti-feeding activity ranging from 68.64 to 97.51 per cent as compared to that for Azadirachta indica oil (0.3%) ranging from 22.61 to 85.95 per cent. No adult moths emerged from the treatments conducted on varieties RtCS-45 and MAUS-61, which may be due to anti-feeding activity coupled with the varietal influence.