Indiana Administrative Code
Title 355 - STATE CHEMIST OF THE STATE OF INDIANA
Article 2 - COMMERCIAL FERTILIZERS
Rule 1 - General Provisions
Section 1-5 - Additional plant nutrients; registration and guarantee; warning on label
Current through March 20, 2024
Authority: IC 15-16-2-44
Affected: IC 15-16-2-31; IC 15-16-2-32
Sec. 5.
(a) Additional plant nutrients besides nitrogen (N), phosphate (P2O5), and soluble potash (K2O), when mentioned or claimed on the:
(b) When claims for such nutrients are made on the label, container, or application for registration, the minimum percentages that will be accepted for registration are as follows:
| Element | Percentage |
| 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 |
(c) Guarantees or claims for the additional plant nutrients listed in subsection (b) are the only ones that will be accepted. Proposed labels and directions for use of the fertilizer shall be furnished with the application for registration upon request. Warning or caution statements are required on the label for any product that contains three-hundredths percent (0.03%) or more of boron in a water-soluble form or one-thousandth percent (0.001%) or more of molybdenum. Any of the elements listed in subsection (b) that are guaranteed shall appear in the order listed, immediately following guarantees for the primary nutrients, nitrogen, phosphorus, and potassium.
