Wheat powdery mildew can cause up to 25% yield loss in Australia with commonly grown varieties possessing poor resistance, ranging from susceptible to very susceptible. Wheat powdery mildew is found throughout the wheat growing regions of NSW and is particularly problematic in the western lower rainfall areas of NSW in years of higher-than-average rainfall and in irrigated paddocks. This investment builds upon previous findings to expand the validation and extension of wheat powdery mildew management strategies for northern grain growing regions.