“Primary plant nutrient” means nitrogen (N), available phosphoric acid (P2O5), or soluble potash (K2O).
Cal. Food & Agric. Code § 14556
Definitions
Added by Stats. 1990, Ch. 504, Sec. 2.
Official source: California Legislative Information. Reproduced from public-domain California statutes; confirm against the official source for the current text. Not legal advice.