Depending on what the condition is now and what you intend to plant you can actually do some "no till" planting...
I haven't seen much on this board. But go to this'n here for that stuff....
http://www.boartuffoutdoors.com/
There is a whole section about food plots there... tons of good info from some proven plot planters and many failure stories to save you money there too. Plots ain't cheap, seed alone is usually way over a dollar per pound with some seed runnin' 3+ bucks. Feel free to jump in asking questions on Boartuff.
real helpful guys... And you can tell 'em "Hdogs" sent ya
Brent