As swampting said, Alot of times...actually most of the time, the deer will bed in the corn. They have no reason to leave unless they are pushed. Depending on what type of hunting you' re talking about, and I think your question was geared more toward the corn field itself, I' d say put on a still hunt or a drive (if your in to drives..some people arent). The deer will bed in between the rows of corn. If you play the wind right, you can literally go from row to row peeking your head out and looking both ways for deer. I read a few articles on this type of hunting and then saw a hunting video where a guy did this. At first, i was skeptical, but i tried it and it works. Remeber, wind is key while doing this. It wouldnt hurt to have a few guys to watch some key escape routes while stalking the field, just incase you jump something up. if you want to drive the corn, just make sure you have enough standers to fill all the escape routes.

One funny story this post reminds me of.....A few years ago, i was hunting this farm which inlcuded a couple acre standing corn field. I hunted in the morning in the woods but had to walk past the corn field when i left. When i left, the wind was blowing from my back into the direction of the cornfield, so i thought....maybe if i just sit on the corner of the cornfield, my scent will make it through the corn and if anything is in there, it might get the hell outta there. Well, i knew where the deer would escape from if it did work, so i set up and waited....about 10 minutes past and as i was sitting on the edge of the corn, 4 does and a small 8 point came bolting out of the corn exactly where i figured. I was kinda amazed that it worked, but never doubted corn fields after that.....