A Multidimensional Approach for the Management of the Potato Virus Y (PVY) Potyviridae: Potyvirus Complex in Idaho
The potato industry in Idaho and the US is currently being affected by aphid-transmitted viruses such as Potato virus Y (PVY) (Potyviridae: Potyvirus). PVY reduces yields and is jeopardizing the seed production industry. Potato colonizing aphids are the most efficient vectors of PVY. However, aphids that do not colonize potatoes may play an important role in the epidemiology of PVY in Idaho because of their high densities during the summer. Hairy nightshade, an abundantly occurring weed in the PNW, may play an important role in the epidemiology of PVY. Current vector and disease management practices in potato do not incorporate multidiscipline strategies and have proven largely ineffective. This project will determine the importance of hairy nightshade in the PVY epidemiology, test percentage transmission of PVY by three aphid vectors using
hairy nightshade and potato as inoculum sources in field experiments, develop management strategies for non-colonizing aphids through adoption of a "Good neighbor strategy" (controlling non-colonizing aphids arising from cereal crops adjacent to potato fields to reduce PVY infection), and incorporate information generated into an overall, effective, multidimensional management plan for vector, disease, and weed control in the PNW. The overall goal of this project will be the development of an improved IPM program for PVY, nightshade, and aphids in potato systems.