When used in this chapter, the following terms shall have the following meanings, respectively, unless the context clearly indicates otherwise:
a. Total nitrogen (N) .............................................. percent |
Available phosphorus (P2O5) ............................... percent |
Soluable potassium (K2O) .................................... percent |
Total nitrogen (N) .............................................. percent |
Available phosphorus (P) .................................. percent |
Soluable potassium (K) ..................................... percent |
The effective date of said regulation shall be not less than six months following the issuance thereof, and, for a period of two years following the effective date of said regulation, the equivalent of phosphorus and potassium may also be shown in the form of P2O5 and K2O. After the effective date of a regulation issued under the provisions of this section requiring that phosphorus and potassium be shown in the elemental form, the guaranteed analysis for nitrogen, phosphorus and potassium shall constitute the grade.
Ala. Code § 2-22-2 (1975)