Impact of different Insecticides used for Bollworm Control on the Population of Jassid and Whitefly in Cotton

The impact of insecticides used for controlling bollworms was evaluated on sucking pests such as jassid and whitefly. Imidacloprid was found to be the most effective insecticide in suppressing jassid population up to next spray, whereas, its continuous use invited more whitefly population. The population reduction of jassid was also better in monocrotophos and endosulfan treated plots. Neem treated plots recorded relatively less whitefly population, whereas, continuous use of cypermethrin induced 10-fold resurgence. Recommended schedule maintained both jassid and whitefly below economic threshold level.