If I remember correctly, 2-4-D is used on lawns to kill broadleaf weeds. It will kill clover. But it does not hurt the normal lawn grasses. I don' t think it would be the preferred chemical to use on a food plot. Check with your supplier and see if they have a product called " Grass Out" . Similiar to Poast, it can be used on cloiver plots. Maybe someone else can suggest another product if you plan for a total kill.
Russ