The inflammation in joints causes spasms in the muscles adjacent to the joints, which is probably why people have hand cramps, explained Richard Brasington, MD, a rheumatologist at Barnes-Jewish Hospital and Washington University in St. Louis.
Grow 1 plant to yield 5 to 10 potatoes. Yield 10 to 20 pounds per 10-foot row. Space seed potatoes 10 to 14 inches apart in trenches 24 to 34 inches apart.
Another article here reflects 6,000 to 8,000 plants per acre with yield average of 40 tons, which is 10 pounds per plant (dependent on variety, weather & soil).