The aim of the project was to test the feasibility of using DNA probes to enumerate microorganisms involved in the degradation .of herbicides in soil.

This project was concerned with providing fibre quality data on research, especially breeding, samples. It was run by the Division of Textile Industry at Geelong, Victoria.

This project continued the major study of waterlogging on heavy clay soils after furrow irrigation or heavy rainfall.

The VAX cluster at Myall Vale is an important and essential facility for research and for the use of SIRA TAC by the industry.

The new truck for plant breeding use has been purchased.

This study determined the genetic basis of pyrethroid resistance in Heliothis annigera and characterised those factors that lead to cyclical fluctuations in the frequency of resistance in field populations.

The objective for this project was to field test the basic pest management version of SIRA TAC Plus and to educate SIRATAC Ltd field staff in the use of SIRATAC Plus.

The objective of this project was to provide enhancements to a partially established network of Apple Macintosh microcomputers and central VAX. microcomputers.

To provide adequate access to computing facilities for SIRATAC, Trichogramma and Heliothis Ecology/Modelling projects at the Toowoomba Laboratory

Australian Insecticide resistance mangement Strategy

The project DAN 33L involved studies of insecticide resistance in the major cotton pests Helicoverpa armigera and Helicovera. punctigera.

The use of pyrethroid insecticides on Helicoverpa armigera susceptible crops has been restricted to only 6 weeks each summer since 1983, when resistance to pyrethroids was diagnosed.

Summary of Key Results 1 Most promising techniques for use by advisory staff in the field are penetrometers and root morphological characteristics. 2 Soil smearing may not have significant effects on plant growth.

This article presents some of the results of the weed survey, which was conducted in 1989, covering 67 600 ha, representing 48% of the NSW cotton area, and involving 52 growers.

Rainfed cotton has been grown in Central Queensland since the 1920's but the total area has fluctuated in response to variable seasonal conditions as well as changing prices and market trends for cropping options

ARRIP is a national database of rural research in progress.

Regulations over the use of pesticides in cotton production have been in existence ever since that industry emerged in Australia.

In dealing with nitrogen and Pix, points to put the issues in context are that nitrogen is the most important because it can increase yield by much more than a growth regulator such as Pix can.

Numerous alternative control techniques have been available In various forms for many years. Unfortunately none of these alternatives have been regarded as practically or economically viable.

In New South Wales the relationship between the cotton industry and waterways is a feature of the industry.