It can really be a great thing if you're out hunting while it's being harvested. One the other hand, the deer can get in there and not come out while it's standing. Also, I always have trouble after the crop has been picked "clean". Seems, like the deer will just move to the next food source, and if it isn't around the harvested field, then you won't see much. An the other other hand, if they leave a few rows or the field is a little "messy", then the deer should still be around.

It would be a real good idea to ask that they leave a few rows standing in your leased field.