clubroot

clubroot
/klub"rooht', -root'/, n.
Plant Pathol. a disease of cabbage and other cruciferous plants, characterized by enlarged, malformed roots, caused by a slime mold, Plasmodiophora brassicae.
[1840-50; CLUB + ROOT1]

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      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.

      The disease can be avoided by using disease-free transplants; growing plants in clean soil and preventing contamination of such soil; applying, where feasible, large amounts of hydrated lime six or more weeks before planting; applying a fungicide in the transplant water; and growing resistant varieties.

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Universalium. 2010.

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  • clubroot — noun Date: 1846 a disease of cruciferous plants (as cabbage) caused by a slime mold (Plasmodiophora brassicae) producing swellings or distortions of the root …   New Collegiate Dictionary

  • clubroot — noun a) A common disease of cabbages, radishes, turnips and other plants of the Cruciferae, caused by Plasmodiophora brassicae, in which galls form on latent roots, rendering them clublike. b) A root thus affected …   Wiktionary

  • clubroot — n. disease that affects plant roots (such as cabbages, turnips etc.) in which the root becomes swollen and deformed …   English contemporary dictionary

  • clubroot — noun a fungal disease of cabbages, turnips, etc. in which the root becomes swollen and distorted …   English new terms dictionary

  • clubroot — club•root [[t]ˈklʌbˌrut, ˌrʊt[/t]] n. ppa a disease of plants of the cabbage family characterized by swollen roots, caused by a slime mold Plasmodiophora brassicae[/ex] • Etymology: 1840–50 …   From formal English to slang

  • clubroot — ˈ ̷ ̷ˌ ̷ ̷ noun ( s) Etymology: club (I) + root : a common disease of cabbages and related plants caused by a slime mold (Plasmodiophora brassicae) producing swellings or distortions of the root followed often by decline in vigor or by death …   Useful english dictionary

  • clubroot fungus — noun a fungus resembling slime mold that causes swellings or distortions of the roots of cabbages and related plants • Syn: ↑Plasmodiophora brassicae • Hypernyms: ↑fungus • Member Holonyms: ↑Plasmodiophora, ↑genus Plasmodiophora …   Useful english dictionary

  • plant disease — ▪ plant pathology Introduction       an impairment of the normal state of a plant that interrupts or modifies its vital functions.       All species of plants, wild and cultivated alike, are subject to disease. Although each species is… …   Universalium

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