Project objectives To determine the nature and extent of migratory flight in Heliothis Armigera and punctigera and to estimate the significance of migration in the formation of outbreaks and in the spread of insectici

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

Objectives o Determine optimum nitrogen rates for cotton under a range of conditions. o Determine the best time to apply this nitrogen.

The aims of the project are to provide a basis for sound irrigation management of cotton through studies of: � (i) Crop response to a range of irrigation management options in terms of crop irrigation efficiency (yiel

Changes in Helicoverpa populations in non cropping areas

Project aims: (i) to investigate the spatial and temporal patterns of Heliothis adult and larval abundance, mortality and host use by each species and their dispersal from other crops into cotton.

This project started in 1981 funded by ACGRA. CRC assumed funding until the project terminated in 1986.

Large scale trials of SIRA TAC comparing standard and dynamic thresholds were done for three years on commercial farms along the length of the Namoi valley.

Advanced breeding selections initially selected at Biloela outyielded CSIRO selections initially selected at Narrabri. In contrast, the Biloela selections were low yielders when tested in New South Wales (NSW).

Three methods of determining levels of resistance in H.armigera were evaluated. These included: (i) a standard glass vial test (ii) a tropical application (iii) a leaf disc test

The objective for this project was to erect and operate a fibreglass greenhouse at Narrabri.

The objective of this project was to modify the weather station at our Breeza Australian Cotton Cultivar site to enable the use of the telephone system and the SIRATAC computer to collect the data.

Installation of a Halon gas fire suppression facility has been completed at a total cost of $12,970* including the linking of the warning system to the building's fire warning system.

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.

No report available

Travel Ent society conference

The project utilized a field trial established by Auscott Pty Ltd, on a grey-brown clay at Warren in June, 1984. The trial consists of 3 replicates of the following treatments: 1.

The objective of this project was to train Mr Brook in the correct use of new software tools at DEC's software education centre in Sydney.

To conduct a critical examination of the ACCT data from 1974/75 to 1985/86 and to learn more about the relative behaviour of cultivars over the testing sites and the effectiveness of location to evaluate cultivar diff

Equipment Grant