Though there is a great deal of variability in the expected performance of Bt cotton depending on the environment, the regulation and marketing of the hybrids reflects a uniformity of approach that is inexplicable. Academic studies continue to talk of the importance of studying toxicity and monitoring resistance build-up even as initial resistance management plans at the farm level fail. It is clear that all possible options for managing bollworms have not been assessed before zeroing in on Bt cotton.
