Commercial cotton crops in the major New South Wales production areas were inspected during the 1983/84 growing season. The purpose of these surveys was to assess the relative distribution, incidence and severity of the various diseases which were found to be present. Information obtained during these surveys can give direction for the work of plant pathologists plant breeders and extension personnel and can also provide a basis for relating disease occurrence and severity to factors such as soil and climatic conditions or changes in cultural practices or crop cultivar