rough–bark

noun
variants: or

rough–bark disease

Definition of rough–bark

  1. 1 :  any of several virus diseases of woody plants (as cherry, apple, citrus) characterized by generalized roughening and often longitudinal splitting of the bark

  2. 2 :  a disease of apples that is caused by a fungus (Phomopsis mali) and produces rough cankers on the twigs and branches

  3. 3 :  a nonparasitic disease of fruit trees (as apples and pears) characterized by a general roughening of the bark and not by local cankers

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