This report summarises the outcomes of a project studying root rot of parsley including investigation into primary causes and treatments for root rot within NSW, Queensland and Victoria.The 12 month study surveyed parsley crops in the major cropping regions of QLD, NSW, Vic to identify the main diseases affecting production in Australia, Identified the caues of root rot by conducting pathogenicity tests on fungi isolated from root lesions and established management strategies to control in victorian parsley crops and in doing so identified the types of organisms responsible for the disease.