(a) A crop of the same kind must not have been grown or planted on the land for five (5), three (3), and two (2) years prior to stand establishment for producing the foundation, registered, and certified seed classes respectively.
(b)
(1) During the year immediately prior to the seeding of any class of seed, the land shall be free from volunteer plants.
(2) No manure or other contaminating material shall be applied the year previous to seeding or during the establishment and productive life of the stand.