Powdery scab, caused by Spongospora subterranea, thrives in cool, moist conditions and can significantly impact potato crops by forming lesions on tubers and galls on roots.

Biosecurity, such as avoiding the use of manure from livestock that ate infected potatoes, is a must
Practical Research: How Prairie researchers uncovered a serious potato disease’s hiding place
Fungus-fraught P.E.I also gets clean bill of health
Part 4 of a series on Prairie farm gardens
Alberta vaults to first place in provincial potato production