Iowa Code 200.20 – Phosphoric acid, nitrogen, and potash requirements
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1. Except as provided in subsection 2, a person shall not sell, offer for sale, or distribute any of the following:
a. Phosphatic fertilizer containing less than eighteen percent available phosphoric acid (P2O5).
b. Nitrogen fertilizer containing less than fifteen percent total nitrogen (N).
c. Potash fertilizer containing less than fifteen percent soluble potash (K2O).
d. Mixed fertilizer in which the sum of the guaranteed analysis of total nitrogen (N), available phosphoric acid (P2O5), and soluble potash (K2O) totals less than twenty percent.
Terms Used In Iowa Code 200.20
- Department: means the department of environmental quality in a reference to a time before July 1, 1983, the department of water, air and waste management in a reference to a time on or after July 1, 1983, and through June 30, 1986, and the department of natural resources on or after July 1, 1986, and includes any officer or agency within that department. See Iowa Code 172D.1
- Department: means the department of agriculture and land stewardship. See Iowa Code 200.3
- fertilizer: means any substance containing one or more recognized plant nutrient which is used for its plant nutrient content and which is designed for use and claimed to have value in promoting plant growth except unmanipulated animal and vegetable manures or calcium and magnesium carbonate materials used primarily for correcting soil acidity. See Iowa Code 200.3
- following: when used by way of reference to a chapter or other part of a statute mean the next preceding or next following chapter or other part. See Iowa Code 4.1
- guaranteed analysis: shall mean the minimum percentage of plant nutrients claimed and reported as Total Nitrogen (N), Available Phosphorus (P) or P2O5 or both, Soluble Potassium (K) or K2O or both and in the following form:Total Nitrogen (N) . See Iowa Code 200.3
- Organic agricultural product: means the same as defined in section 190C. See Iowa Code 200.3
- person: includes individual, partnership, association, firm, and corporation. See Iowa Code 200.3
- sale: includes exchange. See Iowa Code 200.3
- specialty fertilizer: is a commercial fertilizer distributed primarily for nonfarm use, such as home gardens, lawns, shrubbery, flowers, golf courses, municipal parks, cemeteries, greenhouses and nurseries and may include commercial fertilizers used for research or experimental purposes. See Iowa Code 200.3
2. Subsection 1 shall not apply to any of the following:a. A specialty fertilizer.b. A fertilizer designed to be applied and ordinarily applied directly to growing plant foliage to stimulate further growth.c. Compost materials to be applied on land, if any of the following apply:(1) The land is being used to produce an agricultural commodity that is an organic agricultural product as provided in chapter 190C, including rules adopted by the department under that chapter.(2) The land is in the transition of being used to produce an agricultural commodity that is an organic agricultural product, pursuant to rules adopted by the department as provided in chapter 190C.