Interesting......never heard of that. We always used an old John Deere lister we had around to create the rows/mounds before planting. Cut the eyes off of seed potatoes, plant the eyes and cover. Used the same lister to turn them over in the Fall.
Exactly how we did it, always planted on a mounded up row, with a chunk of potato that contained an eye and used an old lister for making the row and for turning them over come harvest time.
Never heard of 'planting' them in a dug hole.
I've seen guys take an old tire, fill it with their soil mix and a chunk of potatoe. As the plant grows out of the tire, add another tire and more soil mix, and just keep adding tires and soil until the stack is head high. Then they'll knock the whole thing over and pick the potatoes off the ground. Heard of growing them in barrels in a similar manner. Just keep adding soil as the plant grows then dump the barrel over.
