You say it had been tilled up, did someone plant it or prepare it for planting? If not I would get out there asap and broadcast some Buck Forage Oats and drag them in with something (about 120 pounds per acre with about 250 pounds per acre of triple 13). I planted mine the end of Sept and they were up about 3" in 7 days. Don't know where you are located, but fall planted clover that I have been around grows kinda slow and usually we don't have it up high enough to graze till late Jan or so.