Sec. 12. As used in this chapter, "grade" means the minimum percentages of the following elements stated in the following order: (1) Total nitrogen (N). (2) Available phosphate (P2O5).
(3) Soluble potash (K2O). [Pre-2008 Recodification Citation: 15-3-3-3(5).] As added by P.L.2-2008, SEC.7.