To study the response of cotton to varying nitrogen rates and times and , methods of application unde r different irrigation strategies . , To demonstrate. to cotton grower under commercial conditions.

The application of the chemical technique developed in DAQ27L in determining the age of field collected adults of Pectinophora scutigera (pinkspotted bollworm).

Heliothis armigera and H. punctigera are serious pests of cotton in Australia. Control of Heliothis is currently dependent on insecticides.

The overall aim of the soils research program based at Trangie has been to develop management strategies that maximise the profitability of irrigated cropping by: (i) correcting yield limiting soil physical problems;

The main aim of this trip was to report to the international scientific community on the progress of the Insecticide Resistance Management Strategy that has been implemented in Australia to contain pyrethroid and endo

Travel Daly Narrabri research conference

Not available

As major pests of cotton production, Heliothis spp. are of most concern to growers during the summer when they are active and damaging crops. Once autumn arrives and the crop is picked, Heliothis are soon forgotten.

The Cotton Council has been funding our project, for which we intend to identify cotton varieties with efficiency of dry matter production when irrigation is expensive, or relatively inexpensive.

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.

The two-spotted spider mite, Tetranychus urticae, ranks second to Heliothis in importance as a pest of cotton. Mites reduce profitability by reducing the yield and fibre quality of cotton.

Yield responses to increasing amounts of irrigation water have been demonstrated in the past by individual trials. In these trials watering occured at varying deficits of soil moisture below field capacity .

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

As most of you are aware, the Siratac Cotton Management Advisor computer program is being rewritten. There will be those amongst you who are unaware as to why this is being done.

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, if not all, entomologists involved in the development of cotton insect management systems agree that an essent1al part of a successful Integrated Pest Management (IPM) program is the ava;lability of an eff1cac1o

Irrigation scheduling in cotton using the water balance program WATERSCHED has been the subject of an extension development project in Queensland for two years. The project is funded by Cotton Research Council.

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.

Insecticides can poison insects in many ways. Insecticides r...:an interfere with metabolic processes , of energy production, cuticular growth and hormone production.

Irrigation trials have been conducted at Byee over the last two seasons as part of a Statewide project funded by the Cotton Research Council.