The volume of it available in two acresfor two horses is next to nothing. He was comparing glutton horses to deer, which is not a fair comparison of impact on the environment. That is my point. Deer would eat far less of the clover and get far more nutritional value from it without decimating it as the horses would. A horse will eat grass and clover continuously until it is down to the bare dirt. Grazers eat continuously all the time.