Micronutrients when mentioned in any form or manner shall be registered and guaranteed. Guarantees shall be made on the elemental basis; however, the source of the micronutrient must be specified. For example, a micronutrient that is a mixture of EDTA and citric acid bound micronutrient must specify the percentage of total micronutrient in each form. An iron EDDHA micronutrient must specify the percentage of total iron in ortho-ortho-EDDHA and ortho-para-EDDHA. Except guarantees for those water soluble nutrients labeled for ready-to-use foliar fertilizers, read-to-use specialty liquid fertilizers, hydroponic or continuous liquid feed programs and guarantees for potting, garden, and lawn soils, the minimum percentages which will be accepted for registration are as follows:
Element | Minimum Conce., % |
Calcium (Ca) | 1.0000 |
Magnesium (Mg) | 0.5000 |
Sulfur (S) | 1.0000 |
Boron (B) | 0.0200 |
Chlorine (CI) | 0.1000 |
Cobalt (Co) | 0.0005 |
Copper (Cu) | 0.0500 |
Iron (Fe) | 0.1000 |
Manganese (Mn) | 0.0500 |
Molybdenum (Mo) | 0.0005 |
Nickel (Ni) | 0.0010 |
Sodium (Na) | 0.1000 |
Zinc (Zn) | 0.0500 |
N.D. Admin Code 7-15-02-01
General Authority: NDCC 19-20.1-12
Law Implemented: NDCC 19-20.1