club root

clubroot

[kluhb-root, -root]
noun
Plant Pathology. a disease of cabbage and other cruciferous plants, characterized by enlarged, malformed roots, caused by a slime mold, Plasmodiophora brassicae.

Origin:
1840–50; club + root1

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World English Dictionary
club root
 
n
a disease of cabbages and related plants, caused by the fungus Plasmodiophora brassicae, in which the roots become thickened and distorted

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