(a) Arrowleaf clover. Only one variety of arrowleaf clover may be grown on a farm for seed production. A farm is any size body of land operated by one farmer which is not adjacent to any other body of land operated by the same farmer. When adjacent bodies of land are rented or leased by the same farmer from different owners, each body of land shall be considered a separate farm.(b) Cotton. Production must be on a one-variety farm when specified by the originating breeder and/or institution. A farm is any size body of land operated by one farmer which is not adjacent to any other body of land operated by the same farmer. When adjacent bodies of land are rented or leased by the same farmer from different owners, each body of land shall be considered a separate farm.