potato skin with scab is a common disease and it is caused by a bacteria streptomyces scabies.

agriculture autumn bacteria bacterial bad brown bumps cause close common concept disease farming food fresh fungi fungus gardening harmless harvested healthy heap infected infection irregular kitchen like mycelium natural organic peel picked pile potato potatoes raw round scab scabies scabs starch streptomyces surface tubers ugly unpeeled vegetable washed wet whole yellow