RE: Big turn around!
If there are enough deer and groundhogs they can strip an acre of new clover very quickly. Take a soil sample and get a quick pH done. Even a pH meter will tell you if you' re way out of wack. Then you can eliminate that as a potential problem. If the stems are ripped off it' s probably the deer. Then you' re into deer repellents etc., to try and keep the deer away until the clover develops a good root system.
Dan O.