This project aimed to identify factors that could substantially influence Bt efficacy in transgenic cotton. Cry1Ac protein concentration in cotton leaves was measured quantitatively using a commercial ELISA assay.

Cotton aphid (Aphis gossypii Glover) is a late season pest of cotton, with the potential to

reduce the value of lint by contaminating it with sticky honeydew secretions. Recently, cotton

To establish if the spider communities in cotton at different locations around Australia are similar, we sampled, using beatsheets and pitfall traps, over 4500 spiders from seven locations extending from the tropical

The significance of transgenic cotton in the pest control strategy adopted by the

Australian industry makes the management of resistance to the Cry1Ac toxin of Bacillus

In growing their crops Australian cotton farmers need to comply with Australian regulations.

This project examined how and when individual Helicoverpa armigera carrying a resistant allele (BX) were favoured in field-grown cotton, particularly on Ingard®.

Aims, * To co-ordinate the adoption of research into sound management, practices in the Gwydir Valley cotton-growing region., The position has contributed to this general aim through most extension, activities which a

Shielded sprayers have been widely and quickly adopted by cotton growers for weed control

in the inter-row. In the last three seasons, the increase in area sown to RoundUp Ready®

It is evident from experience with the resistance of H.

Regular disease surveys have highlighted the changing status of cotton diseases over time and

provided valuable insights into the factors affecting their distribution and severity.

Fusarium wilt is considered by many growers, ginners, consultants and other industry personnel as the most important constraint to sustainable cotton production to have developed in recent years.

The emergence of multiple resistance to insecticides in Helicoverpa populations has had a significant impact on the production of most major field crops in Australia.

Cotton Bunchy Top is a disease of cotton that was first reported in the 1998-99 cotton season. Symptoms of the disease include shortening of internodes and petioles, .

Trichogramma limit pest damage to Ord River Irrigation Area (ORIA) cotton crops by killing the developing embryo of their insect host at the egg stage, effectively reducing the number of emergent pests ingesting trans

This report aims to review the literature, particularly past and current cotton-funded research,, to:, 1. describe biodiversity and the role of biodiversity in cotton production systems;, 2.

The research into aphid bio-control in cotton has documented the agents attacking cotton aphid in southern and central Queensland, and provided an indication of their relative importance.

List the project objectives and the extent to which these have been achieved., ?

Final Report as participant in the 2004 Australian Rural Leadership Program

ABSTRACT

Fusarium wilt, caused by Fusarium oxysporum f. sp. vasinfectum (Fov), is a destructive disease of cotton (Gossypium hirsutum L) in almost all cotton producing countries of the world.