I've found that for deer and turkey the cheapest and best are to plant a mix of winter wheat, oats and rye...cover with about 1/4 inch of soil and then add white ladino clover...don't cover the clover...I live in NC...and usually spray with Roundup about August, then run a disk across (or can use a aereator like you use in your yard)...anything to give the seed some soil contact...then lime and fertilize....the deer will eat the grasses as soon as they start coming up, this gives the clover a chance to grow...when the wheat heads in spring...turkeys will be there...and by spring the clover will be establised for summer and the next season...The second year, I fix another area the same as 1st year beside my original foodplot...to give them more wheat, etc for the 3rd year...you can plant the wheat etc back over the 1st plot of clover....but it seems that the turkeys get too much of the seed if you can't get good soil coverage...

BTW...I tried some of the "turnip greens" this year...I think the brand name was "ProGraze"....deer did eat after the frost (about mid Nov)...but by now (early Jan) there is not much food value left...so I don't think I'll be trying that again....I buy my seed from Southern States...Its cheaper if it doesn't have a deer on the bag....You should also get one of those Scotts hand spreaders ($10)...they work best for the clover as the seeds are so small...Good Luck