Disease on crop
fungalBlack Knot on european plum
Apiosporina morbosa
Fungal disease producing characteristic black warty galls on plum and cherry branches.
- Disease
- Black Knot
- Pathogen type
- Fungal
- Crop
- European Plum
- Scientific name
- Apiosporina morbosa
Black Knot on european plum
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Symptoms on european plum
- ▸ Black hard warty galls on branches
- ▸ Branch dieback above galls
- ▸ Increasing gall size over years
IPM controls
- ✓ Prune galls 4 inches below visible margin in dormant season
- ✓ Burn or bury removed material
- ✓ Fungicide at bud break
- ✓ Remove wild plum and cherry hosts nearby
Other crops affected by black knot
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