Agricultural Research Service scientist Stewart Gray discusses potato virus Y in the latest video on the Focus on Potatoes Website.

Titled "The Changing Face of Potato Virus Y," the Webcast is designed to help growers, seed certification and regulatory officials, consultants and others in the United States understand how the disease affects seed potatoes.

If left unchecked, the viral disease also can become a major issue for the food sector.

The Webcast examines why PVY has re-emerged, what can be done to address the problem and what steps are being taken to manage the disease.

The Webcast also touches on the newly introduced tuber necrotic strains of the virus.