Dark lesions on stems of cabbage-family plants are an early symptom of this fungal disease. Lesions may also appear on roots at or just below the soil surface. Cabbage, broccoli, turnip and Brussels sprouts are the most susceptible crops. Infected plants usually wilt and die. Symptoms may appear at any time in the plant’s growth cycle.
The fungal spores are spread by rain, wind, and human activity. Black leg is most common in cool, moist conditions. The fungus overwinters in seed and plant debris.
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