The department considers a fertilizer deficient if the analysis of any nutrient is below the guarantee by an amount exceeding the values in the AAPFCO, Official Publication No. 78 Investigational Allowance Tables, or if the overall index value of the fertilizer is below 98%.

KEY: plant food, product registration, labeling, unlawful acts

Date of Last Change: December 22, 2025

Notice of Continuation: August 21, 2024

Authorizing, and Implemented or Interpreted Law: 4-2-103(1)(i); 4-13-110