All insecticide management decisions require a solid platform of reliable data and this can only be achieved by a long term committment to pesticide studies, obtaining baseline susceptibility data and monitoring of ch

Four cotton breeding programs have been operating in Australia, three i n New South Wales and one in Queensland .

The frequency of resistance to synthetic pyrethroids in Heliothis armigera has been monitored in the Namoi Valley since the introduction of the insecticide resistance management strategy in 1983.

The objective of the cotton breeding programme is to breed cultivars which are adapted to central Queensland environments.

Host Plant resistance is one such method and has been adopted in developing plant resistance to a range of plant problems. Plants posses both natural physiological and chemical defence mechanisms.

in the Gwydir Valley where the water resource has been over committed to such an extent that a full allocation of water will only be realized only SO years out of every 100 years.

Currently in Australia there are approximately 700 cotton germplasm accessions located with CSIRO, QDPI and a few private seed companies.

This review of the literature referring to A. macrospora indicates the extent of current knowledge about the pathogen and the disease it causes.

To investigate soil response to compaction, a range of cracking clay soils (Vertisols) were collected from major cotton growing areas in Queensland and subjected to a uni-axial-compression.

Nematodes are regarded as a major pest of cotton in many parts of the world. It has been claimed that "nematodes cause economic losses to cotton everywhere it is grown" (Watkins. 1981).

The presence of right-angle bending in cotton tap roots clearly shows the restrictions which degradation of soil structure imposes on cotton growth.

In recent times cotton growers have seen the need to adopt new land preparation practices. In the Macquarie Valley alone, only 35% of the 1987/88 cotton crop was prepared using conventional techniques.

Proper nutrition is one of the many factors necessary in achieving the high yield and quality standards we have set for our cotton crop.

It rained a lot, and much cotton was picked on wet soil - but how much damage was, or will be, done to the soil? It is worth bearing in mind the description given in the handbook on Soil Management by Davies et al.

Having outlined the complexity of this topic, I now intend to summarise the soil and plant mineral relations during waterlogging, followed by a brief review of the scientific principles to improve understanding of the

This paper address why there are differences in the soils of the lower Namoi Valley.

In addressing this topic I have been asked to consider the development of management strategies for farmers faced with a shortage of irrigation water, a situation that appears endemic in the Gwydir Valley.

The successful application of Agrochemicals involves an understanding of the:- target, product, equipment, droplet behaviour, and the environment.

One of the aims of this project is to assess the N fertiliser requirements of cotton under more enlightened tillage systems currently being adopted.

Dr Daly Travel Australian Cotton Conference