Kentucky Administrative Regulations
Title 12 - AGRICULTURAL EXPERIMENT STATION
Chapter 4 - Fertilizer
Section 12 KAR 4:080 - Plant nutrient guarantees and labeling
Current through Register Vol. 50, No. 9, March 1, 2024
RELATES TO: KRS 250.366(7), 250.371 - 250.451
NECESSITY, FUNCTION, AND CONFORMITY: KRS 250.366(7) authorizes the Kentucky Agricultural Experiment Station Director to promulgate administrative regulations for the inspection and analysis of plant nutrient guarantees. KRS 250.421 requires the director to promulgate administrative regulations necessary to implement KRS 250.371 through 250.451. This administrative regulation establishes requirements for plant nutrient labeling requirements.
Section 1. Plant Nutrient Guarantees. Plant nutrients, additional to nitrogen, phosphorus, and potassium, referenced by fertilizer labeling or information provided with a fertilizer shall be registered and guaranteed pursuant to this administrative regulation. Except guarantees for water-soluble nutrients labeled for ready-to-use foliar fertilizers, ready-to-use specialty liquid fertilizers, hydroponic or continuous liquid feed programs and guarantees for potting soils, garden soils, lawn soils, and any other growing media product labeled with a fertilizer guaranteed analysis, the minimum elemental percentages shall be as established in the Table established in this section.
Element |
Percent |
Calcium (Ca) |
1.00 |
Magnesium (Mg) |
0.50 |
Sulfur (S) |
1.00 |
Boron (B) |
0.02 |
Chlorine (Cl) |
0.10 |
Cobalt (Co) |
0.0005 |
Copper (Cu) |
0.05 |
Iron (Fe) |
0.10 |
Manganese (Mn) |
0.05 |
Molybdenum (Mo) |
0.0005 |
Nickel (Ni) |
0.0010 |
Sodium (Na) |
0.10 |
Zinc (Zn) |
0.05 |
Section 2. Fertilizer Labels.
Total Nitrogen (N) |
% |
Available Phosphate (P2O5) |
% |
Soluble Potash (K2O) |
% |
Other Nutrients, Elemental Basis |
% |
Total Nitrogen (N) |
% |
|
% |
Ammoniacal Nitrogen |
|
% |
Nitrate Nitrogen |
|
% |
Water Insoluble Nitrogen |
|
% |
Urea Nitrogen |
|
% |
Other Recognized and De-terminable Forms of Nitrogen |
Total Nitrogen (N) |
34% |
17% Nitrate Nitrogen |
|
17% Ammoniacal Nitrogen | |
Magnesium (Mg) |
2.0% |
1% Water Soluble Magnesium (Mg) |
|
Sulfur (S) |
10.0% |
5% Free Sulfur (S) |
|
5% Combined Sulfur (S) |
|
Iron (Fe) |
2.0% |
2% Chelated Iron (Fe) |
Section 3. Beneficial Substances and Beneficial Compounds.
Beneficial Substance |
% or acceptable units |
Purpose Statement: |
Beneficial Substance |
% or acceptable units |
Purpose Statement: |
Section 4. The term of "percentage" by symbol or word, when used on fertilizer labeling shall represent only the amount of individual plant nutrients in relation to the total product by weight.
Section 5. Incorporation by Reference.
STATUTORY AUTHORITY: KRS 250.366(7), 250.421