(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) The land must be free of volunteer plants during the year immediately prior to establishment, however, reseeding varieties of crimson clover may be allowed to volunteer back year after year on the same ground.
(2) When a new reseeding variety is being planted where another variety once grew, the field history requirements apply.
(c) No manure or other contaminating material shall be applied the year previous to seeding or during the establishment and productive life of the land.