here in mid-southern Illinois it is a toss up between corns and beans. there are so many fields that have corn and beans in them that it is not easy to pinpoint the field that the deer are using. There is also so many oak-hickory forests (90% of the wooded habitat in Illinois is oak-hickory)that acorns are also abundent.
I guess that is why our deer are so healthy, for now, CWD is just to the north. West nile virus is everywhere. nothing is without risks or worries anymore.