Not sure where you are .... but in general ... you should be able to find free information on the better food plot crops for deer at the web site of yout state's ag university. It is very important to use the varieties that are suited for where you are located. What grows well down here in SE Alabama may not be suited well at all where you are. Just will take a little research on your part to figure it out.

If I were you, I'd assume that the corn farmer has done pH correction and I would not worry with that issue. I do not recommend you buy the nationally advertised seed blends that supposedly to grow monster racked deer. While these products may end up with a good plot, I have found that I can do just as well providing what the deer need, and attracting both deer and turkeys for a whole lot less $$$.

There is also a whole lot of good info on "how to" plant available as well. I have found that using a grain drill is by far the most effective and ecomomical method. But broadcast works good as well. Just be careful to not cover the seeds deeper than about 1/4" inch. Certainly not deeper than 1/2".

I would think that you could find a variety of oats, wheat and grain rye that will grow well .... and try a turnip in the mix. The right vatieties will germinate rather quickly if the soil conditions are right and should hold up well to both browsing and typical weather conditions.

Good luck and hope you get a big 'un.