What Causes Scabs On My Potatoes?
What Causes Scabs On My Potatoes? What causes scabs on my potatoes? Potato scab is caused by the bacterium Streptomyces scabies. This bacterium is related to certain bacteria that produce antibiotics used to treat human diseases. S. scabies occurs naturally in many soils, from soils with high organic matter content, to coarse and gravelly soils