This project examined genetic variation in Helicoverpa populations using variation in mitochondrial DNA (mtDNA) and variation in quantitative traits, and was supported by ARC as well as CRDC.

This project was initiated in 1991, following concern expressed by local cotton growers about suspected high insecticide resistance at St George.

The objectives of this project were to evaluate the potential of larval parasitoids, principally Microplitis, for use in biological control programs against Helicoverpa spp.

OBJECTIVES 1. To establish Helicoverpa species composition in the Macquarie Valley and to relate the data to that from other cotton growing areas in NSW and Queensland. 2.

An insecticide resistance management (IRM) strategy was introduced into the summer rainfall cropping areas of eastern Australia in the 1983/84 season.