RE: Will a mortally wounded deer bed down in planted corn?
If you put an arrow through both lungs, the deer won't run 1/3 of a mile so you won't have to worry.
FWIW I've successfully still-hunted deer IN standing corn with a bow. It is extremely challenging and humbling, and shots are few with obstructions, but I have done it successfully. Deer LOVE bedding down in corn.