Jeff, no changes in farming practices and it is the same type of sweet corn planted. He did see some damage last year but it was later in the season.

I would set up a camara ,it could be deer ,but coyotes around here will destroy sweet corn as it ripens. The best animal deterrent i could recommend is ( Hinder ) deer and rabbit repellant its not cheap but works, It s sprayed on ,the animals eat but wont come for seconds because of the Tast, no harm to the vegetables.

Logger Coffey you are correct about the yotes eating the sweet corn....good info about Hinder...I will pass it on.

Your farmer friend is not worried about raccoons? A couple of raccoons will run down a patch of sweet corn also. Electric wire is about the only thing that I know will stop raccoons or deer from making a mess of his patch.

I had some deer eating the nice tender tops of my fall raspberries. I bought some Deer and Rabbit repellent mixed it with some dried jalapeño seeds seeped for a couple of days that I save from the leftovers of last years garden. Hopefully this will deter the deer.