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clubroot

[kluhb-root, -roo t] /ˈklʌbˌrut, -ˌrʊt/
noun
1.
Plant Pathology. a disease of cabbage and other cruciferous plants, characterized by enlarged, malformed roots, caused by a slime mold, Plasmodiophora brassicae.
Origin
1840-1850
1840-50; club + root1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for club root

club root

noun
1.
a disease of cabbages and related plants, caused by the fungus Plasmodiophora brassicae, in which the roots become thickened and distorted
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Encyclopedia Article for club root

clubroot

disease of plants of the mustard family (Cruciferae) caused by the fungus Plasmodiophora brassicae. Susceptible plants include broccoli, cabbage, cauliflower, kohlrabi, mustard, radish, turnip, alyssum, honesty, rockcress, stock, sweet alyssum, shepherd's purse, and yellow-rocket. Affected plants are stunted, yellowed; they wilt during hot, sunny days and partially recover at night. In the early stages roots are greatly distorted by a mass of small to large "clubs," often spindle-like, but in a variety of shapes. The fungus may survive in infested soil 10 years or more. The disease is spread from one area to another by diseased transplants, infested surface-drainage water, manure, crop refuse, and soil on shoes, tools, and equipment. Clubroot is most severe in cool, poorly drained, acid to neutral soils.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Word Value for club

8
12
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