Preliminary research on P.E.I. farms shows that irrigating potatoes helps the plants better use nitrogen in fertilizer, so it doesn't end up leaching into the environment. The research by the Living Lab Project — a partnership of Agriculture Canada, the East Prince Agri-Environment Association and the P.E.I. Department of Agriculture — is in its third year. Provincial soil and water conservation engineer Tobin Stetson said the early field trial results are replicating results from previous federal research farm testing.