Here's the idea: Let your seed potatoes grow sprouts in a warm place with plenty of sunshine (as opposed to the darkness of a potato bag). This allows for, according to the Maine Organic Farmers and Gardeners Association, "the development of short, strong, green sprouts and, if all goes well, a faster-growing plant."
At Saturday's potato planting, both green sprouted and unsprouted potatoes will be planted. Farmer Rob hopes the experiment will turn out as he expects: better, earlier potatoes from the green sprouted rows.