To understand, and predict, Heliothis dynamics on cotton, along with changes in resistance levels, we must understand their dynamics on other hosts and the patterns of movement from these to cotton.

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

SIRATAC users have the option early in the season of using standard thresholds or dynamic thresholds which vary between the standard level and an upper limit.

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

Chemical Farming implies the use of chemicals for the control of insects, weeds and diseases.

The Siratac system when it was originally conceived had no database system included in the workings of the system.

You are all aware that currently there are three varieties available commercially: Siokra 1-2, Sicala 3-1 and DP90 (Deltapine - Acala) .

This can cover an enormous area because not only does technology intrude into every aspect of growing a crop, by the view of it can change drastically with each different farmer.

Seedling diseases include seed rots, pre and post emergent damping 9ff and root pruning. Numerous fungi can be responsible although Rhizoctonia sp., Pythiwn spp. and Fusarium spp. are the most important.

I have to tell you now that I will not be presenting such a perspective.

This Overview has been compiled after talking with a limited number of growers from most districts, and as could be expected there were some opposite opinions expressed.

Genetic engineering involves the agronomic improvement of crop plants through the introduction of new genetic information (genes) originating from other organisms.

The actual decision regarding which seed variety to plant had to be made some months -ago by growers through CSD, this decision is mostly based upon a number of factors, viz: 1: Yield 2: Resistance to insects and dise

Your committee has asked me particularly to focus on the technological needs of the industry. As a background to this it's worth talking briefly about the research councils and their evolution.

The major Australian cotton yarn spinners are encouraged by the improvements the researchers and the growers have managed to obtain in the newer varieties.

Most herbicides are complex molecules and their decomposition often requires several different chemical conversions, each mediated by a variety of organisms.

There are increasing areas of cotton grown in regions which are prone to cool seasons, eg. the Darling Downs, the upper Namoi and upper Macquarie valleys.

The fungus Colletotrichum orbiculare(Berk. et Mont.) v. Arx (Walker and Nikandrow, unpublished data) was found causing anthracnose on X.

It is now two years since we advi sed the previous conference on the progress of the trials so will take this opportunity for a further update.

As the first presentation on this topic I would like to very briefly outline the major advantages of producing an early crop.