It's geting late for corn as BWJ said.

It's never too late for clover but make sure you mow every month or two to keep the weeds from choking it out.

Another option we're experimenting with this year is soybeans with the plan of broadcasting wheat, winter oats and turnips right over them in late summer when they begin to dry up and let light hit the ground again.

Havent tried this yet but heard of it on the web and it sounds like a very feasibleidea for a longer producing plot well into the hunting season