In my paper on the fundamentals of Classing I would like to outline both the traditional style classing and the modern high volume instrument classing.

This article presents some of the results of the weed survey, which was conducted in 1989, covering 67 600 ha, representing 48% of the NSW cotton area, and involving 52 growers.

Heliothis spp. are clearly the major pests of Australian cotton and consequently there has been considerable research on their biology, ecology and control (Zalucki et al 1986).

ARRIP is a national database of rural research in progress.