(1) Grazing lands comprised of introduced or domesticated native forage species that are used primarily for the production of livestock. They receive periodic renovation and/or cultural treatments such as tillage, fertilization, mowing, weed control, and may be irrigated. They are not in rotation with crops.(2) A grazing area enclosed and separated from other areas by fencing or other barriers. The management unit for grazing land.(3) Forage plants used as food for grazing animals.(4) Any area devoted to the production of forage, native or introduced, and harvested by grazing.
Pasture is land with lush herbaceous vegetation cover used for grazing of ungulate livestock as part of a farm or ranch. Prior to the advent of mechanized farming, pasture was the primary source of food for cattle and sheep. It is still used extensively, particularly for free range and organic farming, as pasture gives much better living conditions for the animals.