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.