black root rot

noun Plant Pathology.

any of several diseases of plants characterized by black or brown lesions on the root.

a common disease of the apple caused by the fungus Xylaria mali.

a disease of tobacco caused by the fungus Thielaviopsis basicola and characterized by retarded growth and wilting.

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Nearby words

black racer, black raspberry, black rat, black ring, black rod, black root rot, black rot, black ruff, black run, black russian, black rust

Origin of black root rot

First recorded in 1905–10

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019