2025 Session Last amended: 2002 session

§ 18C.211 — Guaranteed Analysis

Plain-Language Summary

This section requires fertilizers to include a guaranteed analysis stating the percentage of nitrogen, phosphate, and potash. Other plant nutrients can only be guaranteed if allowed by the commissioner's rules. Soil and plant amendments must also provide an accurate statement of composition.

Practical Notes
The guaranteed analysis is the key information that tells buyers what nutrients are in a fertilizer product. Specialty fertilizer content must not vary from the guaranteed analysis beyond the investigational allowances set by rule.