The Queensland Department of Primary Industries maintains a sweet potato nursery to supply commercial growers with cuttings free of Feathery Mottle Virus (FMV). Because of the costs involved and the labour required to maintain such a scheme, this project was designed to determine if such a scheme was warranted and if so could tisse techniques be introduced. The project has established the importance of this disease and the need to continue to produce virus free material for the industry. It has also established the best method for detecting the disease in the field and indicated that the symptoms of the virus may not always be evident in the infected material in the field.