Pink rot
Phytophthora erythroseptica
Symptoms
- Single stems/plants that are visible above the remaining plants
- Chlorosis and early signs of wilting
- Infected stems resemble black leg symptoms
- Underground stem parts are particularly susceptible
- Increased branching of stems and above-ground tubers
Infection and spread
- Survives in the soil as oospores
- Contaminated seed tubers
- Anaerobic conditions after a hot and dry period help the fungus to develop
- Mobile spores enter the roots
- Tubers can also be infected via lenticels, eyes and mechanical damage
Possible confusion with
- Black leg
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- Tuber Symptoms
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