Aims 1. Promote awareness of the importance of soil management 2. Collate existing research results and practical knowledge of the management of irrigated cracking clays. 3.

Aims: *Use data which relates mite numbers to yield loss in order to derive and test action thresholds.

Okay, so what should I talk about?

Heliothis spp.

Again, as for previous conferences, we are providing an update of the ACCT results over the last two seasons. In both seasons 30 entries were tested at each of 12 sites (Warren, Breeza.

The purpose of our four-year study on the Darling Downs was 1) to investigate the population dynamics of heliothis and to quantify the significance of the major controlling influences (parasites, predators, pathogens,

The fungal disease Verticillium wilt has been of sporadic importance in irrigated cotton for many years.

The Bureau of Rural Resources has estimated the area in central Queensland potentially suitable for raingrown cotton production at 60-80,000 ha.

The most outstanding features of recent seasons have been the relatively dry conditions experienced in most areas during growth and boll setting followed by unprecedently wet harvests.

Small parasitic wasps, scientifically known as Trichogramma, are used as biological control agents of moth pests in overseas countries, thereby reducing the need to use insecticides.

Agenda Fifth Australian Cotton Conference ,Hotel Conrad and Jupiters Casino,Broadbeach, Gold Coast, Queensland

A disease can only occur when a virulent pathogen contacts a susceptible host under favourable environmental conditions. The incidence and severity of a disease reflects the occurence of these three factors.

The Australian Field Crops Resistance Management Strategy has been in place now for 7 seasons.

When it comes to varieties 1 don't believe that the growers needs will ever be totally met, we are always looking for improvement in varieties to satisfy, not only the ever tightening cost-return squeeze, but we

Mycorrhizas are symbiotic associations between the roots of plants and fungi. They come into existence when the plant's root system becomes infected with an appropriate fungus.

A complex of pests attacks the Australian cotton crop, none more important than the cotton bollworm, Heliothis armigera. and insecticides are considered necessary for its control. H.

A problem involving leaf death and fall before all bolls are adequately developed, has occurred in cotton growing areas for some years. Early reports of this date back to at least 1981.

Last year I spent several months at Rothamsted Experimental Station in the U.K., as a Churchill Fellow, studying biochemical toxicology in H.

This paper is aimed at presenting some aspects of this debate and seeks to answer the following questions: *Are the dryland industrys needs being met by the spin-offs from the current breeding program?