Yes, I actually do better decoying ducks in the corn than on ponds for some reason. It helps to have a mojo duck or some motion in the field spread though. I like to use goose decoys out in the field, too so I can shoot geese and ducks but you can also use your water duck decoys in the spread. Mojos are like crack to ducks in fields and they work probably 10x better on dry land than on water.
**2014-2015 Illinois Waterfowl Season**
Blue-winged teal - 16
Green-winged teal - 7
Wood Ducks - 5
Canada Geese - 3