Key factors in managing transgenic Bt cottons for the future are to have an effective resistance management strategy. An essential component of any such strategy is to establish a resistance monitoring program.

Field trial examining the use of Bacillus thuringiensis (Bt) foliar sprays on transgenic and conventional cotton varieties showed various levels of Helicoverpa control and impacts on beneficial insects.

H. armigera and H. punctigera are important pests of cotton in Australia.

The focus of much of the research in the Australian Cotton industry is to reduce the industry's dependence on synthetic insecticides.