Resistance risks of Bt cotton and their management in Brazil.

This chapter focuses primarily on risk analysis prior to any field release of transgenic plants and addresses the risk that Lepidopteran pests associated with Bacillus thuringiensis (Bt) cotton may evolve resistance to Bt proteins in Brazil. It lays out a simple procedure for identifying the target species most at risk of resistance evolution, and proposes effective and potentially workable plans to manage this resistance risk to delay the occurrence of resistance to Bt cotton. It also considers approaches for developing a practical monitoring and response system to detect resistance and to adapt management appropriately.