Pink Rot of Potato
Phytophthora erythroseptica
Potatooomycete
A wet-soil disease named for the pink color tubers develop when cut and exposed to air.
Symptoms
Tubers turn pink when cut and exposed to air, then progress to dark brown, rotten tissue; foliage wilts in the field.
Favorable conditions
- •Excess soil moisture, especially late in the season
- •Poorly drained fields
Management
- 1Improve field drainage
- 2Avoid excess irrigation late in the season
- 3Apply mefenoxam-based fungicide
- 4Rotate crops
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