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ARS Home » Pacific West Area » Aberdeen, Idaho » Small Grains and Potato Germplasm Research » Research » Publications at this Location » Publication #393468
Research Project: Potato Genetic Improvement for Enhanced Tuber Quality and Greater Productivity and Sustainability in Western U.S. Production

Location: Small Grains and Potato Germplasm Research

Title: Powdery scab of potato

Author
item BAUSKE, MITCHELL - University Of Idaho
item CUMAGUN, CHRISTIAN - University Of Idaho
item MURDOCK, MACKADE - University Of Idaho
item MILLER, JEFF - Miller Research, Inc
item Whitworth, Jonathan
item DUELLMAN, KASIA - University Of Idaho
item WOODHALL, JAMES - University Of Idaho

Submitted to: University of Idaho Miscellaneous Publication
Publication Type: Monograph
Publication Acceptance Date: 4/21/2022
Publication Date: 7/12/2022
Citation: Bauske, M.J., Cumagun, C.J., Murdock, M., Miller, J., Whitworth, J.L., Duellman, K.M., Woodhall, J.W. 2022. Powdery scab of potato. University of Idaho Miscellaneous Publication. 1024.

Interpretive Summary: Powdery scab, a potato disease caused by a soil borne pathogen, Spongospora subterranea, caused scab lesions on potato detracting from its overall appearance. The pathogen also serves as a vector for Potato mop-top virus that can cause internal necrosis within the potato further damaging its acceptance in the market. The pathogen is long lived in the field and can be transported to new uninfected fields by wind blown soil, planting infected seed potato tubers, and any movement of equipment with adhering infested soil. A disease cycle is described and management recommendations are given. A short list of potato varieties and their susceptibility to powdery scab on the tubers and roots of the plant are listed.

Technical Abstract: Powdery scab, a potato disease caused by a soil borne pathogen, Spongospora subterranea, caused scab lesions on potato detracting from its overall appearance. The pathogen also serves as a vector for Potato mop-top virus that can cause internal necrosis within the potato further damaging its acceptance in the market. The pathogen is long lived in the field and can be transported to new uninfected fields by wind blown soil, planting infected seed potato tubers, and any movement of equipment with adhering infested soil. A disease cycle is described and management recommendations are given. A short list of potato varieties and their susceptibility to powdery scab on the tubers and roots of the plant are listed.