I'm going to say that the deer are used to eating soybeans, they love them and they are high in protein and naturally good for them. However, when they are gone, they'll be looking for something else good to eat. Unless there are some farm crops nearby that they are used to or the acorns are falling like crazy or the persimmons are calling their name......you can kiss your two 1/2 acre plots of imperial whitetail clover GOOD-BYE!!! Good luck and be patient. It going to happen.