picked up 2 lawns that the backs were seeded in nov. 2000 and they had no feeding as of 5/19/2001 (fronts sodded). i plan on feeding them and 19 others monday . i plan on useind 33-3-10 25% scu on the 19 . my question is can i use that 33-3-10 on the 2 new ones? grass has a nice stand and w/ a sprinkler system ant n.j.