Section Agr 1103.02 - Slowly Released Plant Nutrients(a) No fertilizer label shall bear a statement that connotes or implies that certain plant nutrients contained in a fertilizer are released slowly over a period of time, unless the slow release components are identified and guaranteed at a level of at least 15% of the total guarantee for that nutrient(s). (b) Types of products with slow release properties recognized shall include:(1) Water insoluble, such as:c. Urea-formaldehyde products; andd. Isobutylidene diurea, and oxamide;(2) Coated slow release, such as sulfur coated urea and other encapsulated soluble fertilizers;(3) Occluded slow release, where fertilizers or fertilizer materials are mixed with waxes, resins, or other inert materials and formed into particles; and(4) Products containing water soluble nitrogen such as:b. Urea-formaldehyde products;c. Methylenediurea (MDU);d. Dimethylenetriurea (DMTU); and(c) The terms, "water insoluble", "coated slow release", "slow release", "controlled release", "slowly available water soluble", and "occluded slow release" shall be accepted as descriptive of these products, provided the manufacturer can show a testing program substantiating the claim as specified in (d) below. Testing shall be under guidance of experiment station personnel or a researcher who follows Association of Official Analytical Chemists (AOAC) methods.(d) Pursuant to RSA 431:7, II, until more appropriate testing methods are developed, the Association of Official Analytical Chemists (AOAC) International Method 970.04, shall be used to confirm the coated slow release and occluded slow release nutrients and others whose slow release characteristics depend on particle size. (e) The AOAC International Method 945.01 shall be used to determine the water insoluble nitrogen of organic materials.N.H. Admin. Code § Agr 1103.02
#1769, eff 6-30-81; ss by #2408, eff 6-30-83; ss by #2889, eff 10-22-84, EXPIRED 10-22-90
New. #5436, eff 7-22-92, EXPIRED: 7-22-98
New. #7218, eff 3-29-00, EXPIRED: 3-29-08
New. #10464, eff 11-26-13
Amended by Number 19, Filed May 9, 2024, Proposed by #13947, Effective 4/30/2024, Expires 10/27/2024.