Pest management for Bt cotton: Need for conservation biological control

Cotton hybrids expressing various endotoxins of B. thruringiensis, per se fitting into genetic or host-plant resistance and biological tools of integrated pest management (IPM) have given a new dimension and impetus to the IPM philosophy that aims to reduce the massive reliance on insecticides for pest management on the conventional or non-Bt cotton. Being a target technology for saving yield loss due to bollworms, Bt cotton would still succumb to yield loss due to the