"A lot of farmers in our area planted soybeans and we're the only corn fields around for probably a mile or so. It's the only thing that keep the deer in my area. Hunted the corn fields hard all fall and got my buck (best ever)..."
That was a lesson that my dad and I learned a couple of years ago. Deer are naturally self regulating about their diet, so they seek out a variety of food. What we did was drive around and see what the farmers were all planting in the area (corn, beans, rye, etc.), then we planted what no one else really had but could grow well in our soil (that's where a good local co-op comes in). The activity on our plot increased dramatically, especially with the addition of digging a couple of small watering holes nearby.