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.

The Project The Galathera syndrome affects cotton growing in the Namoi Valley, north-western New South Wales.

Techniques for mass rearing egg parasites on eggs of the factitious host Sitotroga cerealella (Angoumois Grain Moth - AGM) were further developed and refined.

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