potato scab

noun

: any of various diseases of the potato characterized by crusty rough spots or scabs on the tubers
specifically : a disease that is characterized by lesions of brownish corky tissue, is caused by an actinomycete (Streptomyces scabies), and is especially damaging in alkaline soils

called also corky scab

compare powdery scab

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Cite this Entry

“Potato scab.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/potato%20scab. Accessed 29 Jan. 2023.

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