Our land has quite a bit of agriculture around it. Most are dairy farmers that grow Corn and Alfafa. To draw deer from their crops - we used Clover (white and ladino - also the Imperial Clover Blends). It works quite well as most dairy farmers do not use clover in our area (uplands). We saw a 50% drop in deer feeding in the alfalfa feilds of plenty the second year of our clover, and a corresponding increase in our plots.

As a side note: The first year we planted clover (4 acres - late spring) we also planted 5 acres of feild corn next to it. The deer ate most of our corn before it matured. In the second year, we had very little damage to our corn as the 4 acre clover field was now mature and attracted most of the deer.

I think farmers call deer plots near cash crops, "lure crops". When we were looking into this 3 years ago, I found alot of info on the web. Its a fairly standard practice, especially used by outfitters that lease farmland in the midwest.

Good luck.