OBJECTIVES OF VISIT: * To attend the 1992 Beltwide Cotton Production Research Conferences organised by the National Cotton Council o. America which included the 52nd Cotton Disease Council.

The aim of the project was to produce more virulent strains of a naturally occurlng entomopathogenlc nuclear polyhedrosls virus of Heliothis species.

This project identified a method of evaluating crop growth to predict yield response to Pix. * Two nutritional disorders were examined.

To develop, validate and implement a regional model of Helicoverpa population dynamics which considers the abundance, movement, oviposition, development and mortality of H.armigera and H.punctigera on all major hosts

Disease Surveys. Commercial cotton (Gossypium hirsutum L.) fields in the Mcintyre, Gwydir, Namol and Macquarie valleys of New South Wales were inspected in November and March each season.