Fall-planted spuds produce outstanding yields by May. If your area experiences hard winters (USDA Zones 1–7), or you tend to have long, wet spring seasons when rot might be a problem, plant potatoes in the spring.
One pound of seed potatoes will plant a row approximately 8' long with seed pieces spaced at 8 - 12" apart.
Plan on 1,200 lb/acre (600 lb of fingerlings) when rows are spaced 36" apart with 12" between plants.
Under optimal conditions, you can expect to harvest 10–15 pounds of potatoes for every pound of seed potato planted.