The residual action of nine insecticides commonly used in cotton were assessed on the survival of the native egg parasitoid Trichogramma funiculatum by exposing adult wasps to sprayed cotton leaves 1, 3, 5, 7, 1 O and

During the past two seasons, cotton crops growing in Queensland have been surveyed for diseases. In March 1993 specimens of wilted cotton were collected from the Brookstead area of the Darling Downs.

The overall aim of the project is to examine the response of cotton to Pix (mepiquat chloride) under different growth rates in the Macquarie Valley.

A great proportion of the Helicoverpa eggs laid onto cotton never hatch. They are either eaten by predators, dislodged from the plant by wind and rain, killed by climatic extremes, or are infertile.

HOW IT RELATES TO THE CONCEPT OF BEST PRACTICE, WHAT ARE THE FEATURES OF THE TOP PERFORMERS

From a humanised viewpoint cotton may be thought of as a lazy plant. It "employs" microscopic fungi to do some of the hard work of collecting nutrients from the soil.

Pix is now in common use to manage vegetative growth of cotton in Australia. I presented a paper at the 1992 ACGRA Conference detailing how to evaluate potential responses to Pix.

The conference was held on the 23 - 27th of August, 1994 in Silsoe, UK.

Vertosols are the main soil type on which cotton is grown in Australia. Eighty percent of irrigated cotton is grown in retained hill.

OBJECTIVES: 1. To study sampling and control practices for mirlds in irrigated and dryland cotton.

Project Objectives: Part A: (i) To study the effect of wet/dry cycles with drying by evaporation alone in ameliorating degraded furrows in retained hill cotton (at the Fressor site).

A growth disorder of cotton ( Gossypium hirsutum) occurs in irrigated cracking clay soils in cotton growing regions of northern New South Wales.

This report summarises the findings from the CRDC funded project "Managing soils to avoid compaction problems in cotton growing". The project ran from 1989/90 to 1991192.

Annual Report 1994-1995

The cotton plant has two main sets of traits that contribute to its resistance to pests: (1) chemical (e.g. gossypol) and morphological defences (e.g. okra-leaf) and (2) compensatory mechanisms for regrowth (e.g.

Cotton fibres are differentiated from single ovule epidermal cells and grow synchronously, initiating at about the time of anthesis.

In March 1995 I attended two Keystone Symposia, "Frontiers of Plant Morphogenesis" and "Signal Transduction in Plants", held concurrently at Hilton Head Island, South Carolina, U.S.A.

Frontiers of Population Ecology Meeting program and abstracts

This report arises from a scoping brief presented to the author on 19th May 1995.

In March 1995 the Cotton Research and Development Corporation (CRDC) asked the Centre for International Economics to prepare a report on the cotton industry and its economic impact.