Validation of IPM technology for rainfed cotton in western Orissa

摘要

Abio intensive IPM module against the insect pest complex of cotton (var. MCU 5) was validated over 50 ha under farmer's field conditions at village Gandhinagar in Nawarangpur district of Orissa during kharif, 2001-02. The major components of the 1PMmodule were seed treatment with imidacloprid @ 7 g/kg of seeds, monitroing of bollworms through pheromone traps, two releases of Trichogramma chilonis @ 1.5 lakh/ha at 55 DAG (days after germination) and 65 DAG, foliar sprays ofNeem seed kernel extract (NSKE) 5 per cent at 75 DAG and 105 DAG, foliar spray of HaNPV @ 500LE/ha at 90DAG, growing of maize and arhar as inter crop, installation of bird perches @ 20/ha, topping at 90 DAG, collection and destruction of harmful larvae at weekly interval, foliarspray of chlorpyrihos (0.05%) at 115DAG and monocrotophos (non 1PM). The IPM module registered significantly lower sucking pest population and bollworm damage with increasing activity of natural enemies and gave higher monetary return over the farmers' practices.