Disease on crop
fungalClubroot on collards
Plasmodiophora brassicae
Soil-borne disease causing characteristic distorted club-shaped roots on brassicas. Persists in soil for 10-20 years; the dominant brassica pathogen in acidic poorly-drained soils.
- Disease
- Clubroot
- Pathogen type
- Fungal
- Crop
- Collards
- Scientific name
- Plasmodiophora brassicae
Clubroot on collards
Detailed guidance for this section is being prepared. Check back soon.
Symptoms on collards
- ▸ Stunted plants that wilt during the day
- ▸ Yellowing and reddening of lower leaves
- ▸ Distorted galled or club-shaped roots when plants are pulled
- ▸ Affected plants pull easily from soil
IPM controls
- ✓ Raise soil pH to 7.2 or above with lime (the most reliable control)
- ✓ Crop rotation away from brassicas for 7+ years on infected ground
- ✓ Improve drainage with raised beds and organic matter
- ✓ Source clean transplants
- ✓ Plant resistant varieties where available
Other crops affected by clubroot
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