This guide shows some of the more typical damage symptoms seen in Australian cotton from exposure to a range of herbicides. Images were obtained from experiments where known rates of herbicide were applied to irrigated cotton at specific growth stages. The symptoms of herbicide damage displayed by cotton plants are affected by the type of herbicide, the herbicide rate, the crop growth stage, and environmental factors such as soil moisture, temperature and humidity. Under different conditions, crops may not display the symptoms of damage indicated in these photos.