The present study was carried out to determine the synergistic effects of edible oils (Palm, sunflower, cotton seed, rice bran, castor, sesame) and non-edible oils (Neem, pongamia, citronella, rosemary, thyme, jatropha and lemongrass) in the suppression of malathion resistance Sitophilus oryzae (L.) and Tribolium castaneum (Herbst.) by adopting residual film method. Among edible oils, sesamum exhibited high level of malathion resistance suppression in S. oryzae with SR of , followed by pongamia, rosemary, rice bran, thyme and neem oils exhibited moderate level of synergistic activity with suppression rate (SR) of , , , and per cent, respectively. |
