The fungal disease Verticillium wilt has been of sporadic importance in irrigated cotton for many years.

The objective of the experiments reported in this paper is to determine the fate of fertilizer nitrogen applied to the grey clays in the Namoi Valley.

Ecological genetics is the study of genetic changes and how these are influenced by the biological parameters of a species.

During the 1988/89 cotton season trials were conducted to evaluate the potential of synthetic pheromones to control the pink -spotted boll worm, Pectinophora scutigera, by mating disruption

The most outstanding features of recent seasons have been the relatively dry conditions experienced in most areas during growth and boll setting followed by unprecedently wet harvests.