I love planting Food Plots...as mentioned if You plant is a secluded area or even an open area that stretches into a covered wooded area the Deer feel safer and will come out to feed.In the early Spring we may walk the field edges,roads,logging roads etc... and frost-seed clover,when we can break up the ground and disc we plant wheat,foraging oats in the Spring.After it dwindles down thru the summer months and we get into the Fall months we plant the Rape,Brassicas and Purple-top Turnips sometimes adding in a few sugar beets and winter wheat.Like several here also mentioned...plant something different on your land from what other Farmers have row croped around You,eventually You will find what the Deer love and crave and they will go out of their way to browse/eat what You have planted.
In some area's we plant food plots closer to the woods or in long strips for Bow Hunting and its a great feeling to see Your plots grow and the Deer come in to browse or the Turkeys and Quail use it to survive.