In response to requests by local grower organisations in CQ, the Cotton Research & Development Corporation (CRDC) commissioned research project DAQ81C to address GMAC and NRA concerns regarding the effectiveness of the national INGARD resistance management strategy in CQ. The challenges facing the CQ cotton industry for securing INGARD registration were manifold. First, the field parameters of the product had to be quantified for the local environment. The second and more difficult challenge was to develop a novel mechanism for end-of-season resistance management specific to CQ. Before such a mechanism could be developed, the ecology and population dynamics of heliothis spp. as related to INGARD cotton needed to be studied and quantified. The trials were designed to address the following main issues: I. The effectiveness of INGARD cotton, i.e., changes in insecticidal efficacy over the season. 1 For traditional reasons, the more familiar generic name Heliothis is retained here in preference over the correct name Helicoverpa. Confidential - DAQ81C Final report 3 2. Identification of suitable 'refuge' crops (crops that produce substantial numbers of heliothis pupae or moths) that could be planted with INGARD cotton as part of strategic resistance management. 3. The 'refuge value' of conventional cotton and non-cotton crops grown commercially within the irrigation area in terms of pupae or moths per hectare. 4. The extent of diapause in populations of heliothis across CQ. In addition to addressing the above four issues, the research protocols and plan of work were designed to provide some information on the distribution of native Gossypium species in the region and the impact of INGARD cotton on local invertebrate fauna relative to conventional cotton.