jal_ut wrote:This was an experiment. No, I don't usually plant the whole potato unless it is walnut sized. I usually cut the potatoes to leave one or two eyes per piece. Each eye will send up a vine. You will, as a rule, get larger potatoes if you only use one eye and hence one vine per spot. If you plant the whole potato, you get more vines, more potatoes, but the yield is not necessarily more in weight because they will be smaller potatoes. At least this is what my experiments have shown. For my main crop this year, I planted two eyes per piece and the yields were great. I got some really nice potatoes. (Pix in another post)
I love experiments like this.
It looks like we can conclude that you will get a way better yield from the same amount of vines if you space them out rather than crowd them.
I've seen your other pics and from the looks of things, two per spot seem to be pretty good.
How far do you space your pieces? A foot give or take?