what are the symptoms of clubroot of crucifers?
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The distinctive underground symptoms of club root have
earned it the nickname "fingers and toes". These symptoms
consist of swellings on the roots and occasionally on below
ground stems. Swellings range from small round enlarged
areas to large spindle-shaped galls. All or part of the
root system may be affected. In cases of mild infection no
above ground symptoms may be evident. In severe cases,
nutrient absorption and water uptake are disrupted and
above ground symptoms are those commonly associated with
nutrient deficiencies and drought stress. Plants may show
varying degrees of yellowing (chlorosis). Infected plants
may also wilt during the hot part of the day. Flagging,
wilting of uppermost leaves is common on young infected
plants. Premature death, stunting and reduced size and
quality of heads are also symptoms associated with club
root.
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