It has now been 11 years since the introduction of the Insecticide Resistance Management Strategy in the 1983/84 season.

The aim of this research is to define the best rotation/management combination whereby yields and quality of subsequent cotton crops can be maximized and sustained over the long-term.

Simulations were run to test the sensitivity of OZCOT to varietal differences in developmental characteristics known to influence fruiting dynamics in cotton.

In 1993 a series of experiments were established in the Namoi and Macquarie valleys to study the effects and benefits of rotation crops for subsequent cotton crops.

Pengelly Farming Pty. Ltd. is a family owned and operated business in the Bowenville area of the inner Downs.

At the 1992 Australian Cotton Research Conference, we reported on field trials of a prototype Heliothis ID kit that were held during the 1991-92 growing season (Trowell et al., 1992).

The distinctive dark glands covering most of the aelial parts of the cotton plant are well known to growers.

Cotton is but one of a number of fibers which the consumer can use to satisfy the need for clothing, household articles and industrial products.

This is a new project that aims to develop diagnostic molecular probes for the most threatening insecticide resistance mechanisms in Australian H. armigera

Host plant resistance has long been a focus of the CSIRO cotton breeding program.

The first process in facing up to a season without water is to set some rules and make certain assumptions. Assumptions can be based on previous experience, fact or fiction and can incorporate any degree of risk.

Insecticide resistance continues to be a major problem for the cotton grower. It also is the focus of much of the research into the use and management of transgenic plants.

There have been claims that the addition of lime to irrigated heavy textured clays have improved soil conditions and yields.

Quality of fiber has long been a concern to textile mills. Growing areas such as the San Joaquin Valley in California have historically been paid a premium for consistently high quality.

Resistance to some carbamate insecticides ( methomyl and carbaryl) in H. armigera is has been known since 1983. But at that time no resistance to thiodicarb (also a carbamate) was identified.

The diet incorporation technique has been used to detennine the variability in the baseline susceptible response to Bt in a number of field populations of both Helicoverpa armigera & Helicoverpa punctigera.

With the advent of new molecular genetic techniques, it is now possible to identify the particular pathogen strain in an outbreak of plant disease, to characterise it, and potentially, to isolate genes associated with

This CRDC-funded project is studying the effect of repeated wet/dry cycles, with drying by rotation crops, on the structure repair of a black, cracking clay.

My idea today, with Australian farmers achieving the highest yield in the world, is that fibre quality has to be addressed almost separately to yield.