Mycorrhizas are symbiotic associations between the roots of plants and fungi. They come into existence when the plant's root system becomes infected with an appropriate fungus.

The SOILpak project so far has concentrated on the grey and brown cracking clay soils used for cotton production.

The potential for extensive adult movements is one of the key factors contributing to the success of Heliothis spp. as pests (Farrow & Daly 1987, Fitt 1989).

The aim of this project was to develop a mass screening technique for the selection of cotton plant antibiosis resistance (AR) to H. armigera.

A problem involving leaf death and fall before all bolls are adequately developed, has occurred in cotton growing areas for some years. Early reports of this date back to at least 1981.