How to Fight Potato Scab. Potato scab is a condition caused by bacteria called Streptomyces scabies. You won't see signs of the problem above ground. Instead, you see the evidence on the skin of the potatoes (Solanum tuberosum). The lesions vary in appearance and might include slightly raised scabs, pits, cracking, darkening or a corklike feeling...
Table of contents How to Fight Potato Scab
Things You'll Need 00:51
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