(c) If the Secretary finds that a requirement for expressing calcium and magnesium in elemental form would not impose an economic hardship on distributors and users of agricultural liming materials by reason of conflicting label requirements among states, the Secretary may require by rule that the minimum percent of calcium oxide and magnesium oxide or calcium carbonate and magnesium carbonate, or both, shall be expressed in the following terms: * * *
Amended by 2024, No. 160,§ 7, eff. 7/1/2024.Amended by 2021 , No. 41, § 10, eff. 7/1/2021.Added 1985, No. 126 (Adj. Sess.), § 1; amended 2003, No. 42 , § 2, eff. 5/27/2003; 2017, No. 113 (Adj. Sess.) , § 18.