ATCP 40.10ATCP 40.10 Fertilizer; guaranteed analysis. ATCP 40.10(1)(a)(a) A fertilizer label shall contain a guaranteed analysis that complies with this section. A guaranteed analysis may guarantee any plant nutrients or enhancing elements identified in sub. (2), and shall guarantee at least one of the plant nutrients identified in sub. (2). Each guarantee shall be expressed as a minimum guaranteed percentage by weight of the fertilizer. ATCP 40.10 NoteNote: All of the materials identified in sub. (2), except cobalt and sodium, are plant nutrients. Cobalt and sodium are “enhancing elements.” See ATCP 40.02 (7).
ATCP 40.10(1)(b)1.1. That a fertilizer contains any plant nutrient unless that plant nutrient is identified in sub. (2) and in the guaranteed analysis under par. (a). ATCP 40.10(1)(b)2.2. That a fertilizer contains the enhancing element cobalt or sodium unless that enhancing element is included in the guaranteed analysis under par. (a). ATCP 40.10(1)(b)3.3. That a fertilizer contains an enhancing element other than cobalt or sodium, unless that enhancing element is guaranteed as a soil or plant additive ingredient under sub. (10). ATCP 40.10 NoteNote: A fertilizer that claims enhancing elements, other than cobalt and sodium, is considered a “fertilizer-additive combination.” See ATCP 40.02 (9).
ATCP 40.10(2)(a)(a) Except as provided in par. (b), no person may represent that a fertilizer contains any of the following plant nutrients or enhancing elements unless that plant nutrient or enhancing element is guaranteed at or above the following amount: Plant Nutrient Minimum Guarantee
Total Nitrogen (N) 1.0%
Available Phosphate (P2O5) 1.0%
Soluble Potash (K20) 1.0%
Calcium (Ca) 1.0%
Magnesium (Mg) 0.5%
Sulfur (S) 1.0%
Boron (B) 0.02%
Chlorine (Cl) 0.1%
Cobalt (Co) 0.0005%
Copper (Cu) 0.05%
Iron (Fe) 0.1%
Manganese (Mn) 0.05%
Molybdenum (Mo) 0.0005%
Nickel (Ni) 0.05%
Sodium (Na) 0.1%
Zinc (Zn) 0.05%