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black root rot

noun

, Plant Pathology.
  1. any of several diseases of plants characterized by black or brown lesions on the root.
  2. a common disease of the apple caused by the fungus Xylaria mali.
  3. a disease of tobacco caused by the fungus Thielaviopsis basicola and characterized by retarded growth and wilting.


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Word History and Origins

Origin of black root rot1

First recorded in 1905–10

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Black Rodblack rot