I worked on a farm in southern Colorado. Potatoes and grain. My last year there we harvested and shipped over 2.75 million pounds of potatoes.
Don't grow in the ground. Instead use a container with adequate drainage and lay straw in the bottom. Place seed spud in the middle and cover with a bit more straw. As vines grow out keep adding straw. Once the vines die just empty the container. Clean spuds. Ready to use with a little washing.