Powdery scab, is a disease of potato tubers. It is caused by the cercozoan Spongospora subterranea f.
powdery scab 英语释义
英语释义
1. a disease of potato tubers caused by a fungus (Spongospora subterranea) and characterized by nodular discolored lesions which at maturity burst to expose a powdery mass of spores in circular pits surrounded by the lighter colored frayed remnants of the skin of the tuber — called also pock scab