I agree with farmhunter on the soybeans. I plant round-up ready soys in the areas I want to plant buck oats in the fall. Planting the soys in the spring gives the deer something in the spring to feed on and also makes it quite easy to control weeds in those areas. I go in and bush hog the beans in the second week of sept. and drill in the grain. What has worked well for me is to strip plant and to leave some of the beans standing as they are the best late season food I have found for deer when the temps. get way down in the single digits. It's a great way to get full benefit from your food plot space on a year long basis especially if you have room for a clover/chicory strip to add as well. They hit the clover hard in early spring, the beans a little later in the spring and summer. The chicory comes on strong when the conditions get extremely hot and dry in mid summer and the clover is stressed. Then the deer switch to the oats or wheat in the fall and back again to the beans in the winter months.

Sorry if I included more info. than your were actually looking for but the food plot thing has become a real passion of mine.