Section 24, The National Fertilizer Regulations, 2020.

(1) A manufacturer, importer or distributor of fertilizer shallguarantee that plant nutrients including nitrogen, phosphorus and potassium is contained in the fertilizer, when stated in any form or manner on the label. (2) The minimum percentage of nutrients that may be guaranteed shall be 1.0 percent for Nitrogen (N), Phosphorus (P205) or Potassium (K20). (3) Sources of the elements guaranteed under subregulation (1), and proof of availability shall be provided to the Agency on request. (4) The minimum percentages of nutrients, other than nitrogen, phosphorus and potassium that may be guaranteed shall be as follows - Order of Nutrient Minimum Percent Declaration Claimable 1 Calcium (Ca) 1.0000 2 Sulfur (S) 1.0000 3 Magnesium (Mg) 0.5000 4 Boron (B) 0.0200 5 Chlorine (Cl) 0.1000 6 Cobalt (Co) 0.0005 7 Copper (Cu) 0.0500 8 Iron (Fe) 0.1000 9 Manganese (Mn) 0.0500 10 Molybdenum (Mo) 0.0005 11 Sodium (Na) 0.1000 12 Zinc (Zn) 0.0500 (5) Guarantees or claims for the plant nutrients listed in sub-regulation (4) in addition to nitrogen, phosphorus and potassium or any other nutrient approved by the Agency are the only ones that will be accepted. (6) When any of the elements listed in sub-regulation (4) are guar anteed, the licensed manufacturer, importer or distributor of fertilizer shall upon request, provide the Agency with a copy of the label and directions for the use of the fertilizer. (7) The elements listed in sub-regulation (4) that are guaranteed shall appear in the order listed and shall immediately follow guarantees for the primary nutrients of nitrogen, phosphorus and potassium if present.