There are no resistant potato cultivars. Thin-skinned cultivars are more susceptible. Do not sterilize seed pieces. Rotate crops with grains, preferably five years before replanting potatoes on infested ground. Besides potatoes, other solanaceous crops and weeds can be hosts to black dot.
Examples are tomatoes, peppers, eggplant, and nightshades.
Keep potato fields free of nightshades. Fields should be clean of debris where black dot can overwinter. Keep fields irrigationd but avoid excess watering, especially in low spots or poorly drained soils. Windbreaks may be useful on sandy soils in high wind areas. Avoid skinning or bruising tubers at harvest.