Okla. Stat. tit. 2, § 792
It shall be unlawful to distribute, sell or offer for sale, for other than seeding purposes, within the State of Oklahoma, any barley, corn, cotton, oats, peanuts, rye, sorghums, soybeans, wheat or other seed, cereals or grain that has been treated with a fungicide, unless it is sold separately from untreated seed or grain, and there accompanies the sale a certificate, affidavit or tag stating that the grain, seed or cereal has been chemically treated and cannot be used for "food, feed or oil purposes."
Laws 1959, p. 5, § 2; Amended by Laws 2001, HB 1378, c. 146, § 17, emerg. eff. April 30, 2001