charcoal rot


Definition of charcoal rot

: a disease of plants that is common in the southern U.S. and destructive to sweet and white potatoes and to corn and is caused by a fungus (Macrophomina phaseoli) which attacks the lower stem and roots destroying much of the tissues and forming myriads of tiny black sclerotia on what remains

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Cite this Entry

“Charcoal rot.” Dictionary, Merriam-Webster, Accessed 11 Aug. 2020.

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