In recent years sap-sucking bugs have been associated with early season damage.to cotton crops in most of the production centres in New South Wales and Queensland.

Namcala

At the 1982 Australian Cotton Growers' Research Conference the effects of land preparation at different soi1 water contents on soil structure and cotton growth was reported.

A knowledge of dispersal is essential to an understanding of population control and to the management of insecticide resistance.

Soils that disperse tend to have poor drainage; excessive swelling closes soil pores, which also block up with dispersed clay, sand and silt.