Most likely the yote was hanging out around the field waiting for mice and such to flush out when the corn came down. Yotes tend to travel alot so chances are he won't be staying around long unless there is a good food source nearby. My hunch is that you have more yotes around then you think. They live in probably every single county in the lower US and they eat almost anything. They are classified as carnivores but I think they are more like omnivores. I've seen them eating grasshoppers, fruit and vegetable matter. He may stick around and make that area his territory. There isn't much way of telling for sure.