A vision guidance system has been designed, built and commissioned which steers a tractor relative to the rows of a crop such as cotton.

OBJECTIVES 1. To undertake a comprehensive sutvey of the Australian distribution of B. biotype B. tabaci . 2. To sutvey cotton for the presence of B, biotype B. tabaci 3. 4.

This project had two major aims consistent with the overall goal of controlling Verticillium wilt in cultivated cotton (Gossypium hirsutum).

OBJECTIVES Reason for Travel Dr Denholm is an international authority on the management of resistant Bemisia tabaci on cotton. 1.

The purpose of the tour was to study and experience through participation the development and extension methodologies and practices used in the transfer and adoption of new technology in the American cotton industry b

The aims of this trip were to initiate research on HaSV RNA designed to improve our ability to express insect viral genes in transgenic cotton, and to attend two important conferences relevant to the long-term biologi

Aim of Travel: To participate in the Vlth International Co11oquium on Invertebrate Pathology and Microbial Control. The Colloquium also incorporated the Second International Conference on Bacillus thuringiensis

From this visit I gained: 1. A good overview of the state of agricultural soil mechanics worldwide. I was struck by the lack of direction and novelty in some of the work in this field.

The objective of this study was to examine the distribution of tyre imposed stresses, soil displacements and soil mechanical properties as function of the soil surface geometry.

With CRDC permission, the travel award was transferred from Dr Skerritt to Ms A Hill, the diagnostics project leader; there was, however, not a change in itinerary.

The inaugural Australian Rural Leadership Program was conducted during 1993 and 1994.The rationale for this innovative concept was to form a strong bond between the 30participants, enrich their leadership capabilities

Objectives of visit: To attend the 13th Conference of the International Soil Tillage Research Organization (ISTRO) and present paper entitled "Effect of soil preparation method and cotton-based cropping system on

Field experiments at Narrabri in 1993, 1994 and 1995 have utilised overhead sprinklers and, portable rain-out shelters.

The comparative advantage1 of cotton production was examined for three production systems in the United States and four production systems within Australia.

A paper was presented at the fourth international Trichogramma and other egg parasitoid conference titled 'Evaluating egg parasitoids for integrated pest management in Australian raingrown cotton.' Highlight

Two fields of cotton on two nearby farms in the Macquarie Valley of NSW which had different histories of weed management were studied to determine if weed seeds were being introduced via irrigation water.

The aims of the CRDC project CSE 29C were: - to optimise the design of recombinant Helicoverpa viruses with increased insecticidal activity (Activities 1 and 2 of the overall program above), - to develop suitable larg

This project aimed to continue the steady improvements in developing improved cotton varieties adapted to Australian growing conditions and markets

The aim of this study was to complete the development of a mirid feeding bioassay to facilitate screening and characterization of proteinaceous toxins.

Disease surveys in November and March of each season have been undertaken on a regular basis since 1983.