In addition to those terms contained in Section 576.011, F.S., the following definitions shall apply to this rule chapter:

1. (1) “Actively Growing Turf” means turf that needs mowing at least once every two weeks to maintain the grass blade height recommended in the document entitled University of Florida, Institute of Food and Agricultural Sciences ENH 10 “Mowing Your Florida Lawn” dated March 2009, which is hereby adopted and incorporated by reference. Copies may be obtained from the Environmental Horticulture Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, Florida 32611 or online at HYPERLINK "https://flrules.org/Gateway/reference.asp?No=Ref-18835"https://flrules.org/Gateway/reference.asp?No=Ref-18835.
2. (2) “Ammonium Thiosulfate” means a commercial product composed principally of (NH4)2S2O3. It is a nitrification inhibitor.
3. (3) “Beneficial Substance” means any substance or compound, other than primary, secondary, and micro plant nutrients, and excluding pesticides, that can be demonstrated by scientific research to be beneficial to one or more species of plants, soil or media.
4. (4) “Consumer” is defined as an individual, a corporate entity, or a distinct farming operation.
5. (5) “Controlled Release fertilizer” means a slow released fertilizer that is engineered to provide nutrients over time at a predictable rate under specified conditions.
6. (6) “Custom Blend” means a fertilizer-pesticide mixture manufactured at the request of and to the specifications of a purchaser, for his immediate and exclusive use.
7. (7) “Cyanamide” means a commercial product consisting principally of calcium cyanamide (CaNCN). It is a nitrification inhibitor.
8. (8) “Dicyandiamide” means a water soluble organic compound of formula C2H4N4 which contains at least sixty-five percent (65%) nitrogen. It is a source of slowly available nitrogen. It is a nitrification inhibitor.
9. (9) “Enhanced Efficiency Fertilizer” means a fertilizer product with characteristics that minimize the potential of nutrient losses to the environment, as compared to a reference soluble product.
10. (10) “Established Urban Turf” means urban turf older than 12 months.
11. (11) “Inventoried Blend” means a fertilizer-pesticide mixture manufactured, packaged and held for future sale.
12. (12) “Low Analysis Fertilizer” shall apply to fertilizer which contains less than 16% total primary plant nutrients.
13. (13) “Low Phosphate Fertilizer” means fertilizer products intended for new or established urban turf or lawns, with phosphate levels equal to or above 0.5% or as provided in Rule 5E-1.003, F.A.C.
14. (14) “N-(n-butyl) Thiophosphoric Triamide (NBPT)” means a compound that is the normal butyl derivative of thiophosphoric triamide and is a urease inhibitor (CAS No. 94317-64-3).
15. (15) “New Urban Turf” means urban turf established less than 12 months.
16. (16) “Nitrogen Stabilizer” means a substance added to a fertilizer which extends the time the nitrogen component of the fertilizer remains in the soil in the urea or ammoniacal form. Urease inhibitors and nitrification inhibitors are nitrogen stabilizers.
17. (17) “Nitrification Inhibitor” means a substance that inhibits the biological oxidation of ammoniacal nitrogen to nitrate nitrogen.
18. (18) “No Phosphate Fertilizer” means fertilizer products with phosphate levels below 0.5% intended for established urban turf or lawns.
19. (19) “Plant Amendment” means any substance applied to plants or seeds which are intended to improve growth, yield, product quality, reproduction, flavor, or other favorable characteristics of plants except fertilizers, soil amendments, agricultural liming materials, animal and vegetable manure, pesticides, plant regulators, and other materials which may be exempt by regulation.
20. (20) “Plant Biostimulant” means a substance(s), microorganism(s), or mixtures thereof, that, when applied to seeds, plants, the rhizosphere, soil or other growth media, act to support a plant’s natural nutrition processes independently of the biostimulant’s nutrient content. The plant biostimulant thereby improves nutrient availability, uptake, or use efficiency, tolerance to abiotic stress, and consequent growth, development, quality or yield.
21. (21) “Plant Inoculant” means a product consisting of microorganisms to be applied to the plant or soil for the purpose of enhancing the availability or uptake of plant nutrients through the root system.
22. (22) “Slow Release Fertilizer” means a fertilizer in a form that releases, or converts to a plant available form, plant nutrient at a slower rate relative to an appropriate reference soluble product.
23. (23) “Soil Inoculant” means a microbial product that is applied to colonize the soil to benefit the soil chemistry, biology, or structure.
24. (24) “Sports Turf” means non-agricultural land planted exclusively for golf courses, parks and athletic fields.
25. (25) “Stabilized Nitrogen Fertilizer” means a fertilizer to which a nitrogen stabilizer has been added.
26. (26) “Starter Fertilizer” means a fertilizer formulated for a one-time application at planting or near that time to encourage root growth and enhance the initial establishment.
27. (27) “Urease Inhibitor” means a substance which inhibits hydrolytic action on urea by the urease enzyme. When applied to soils the effect of the urease inhibitor is less urea nitrogen lost by ammonia volatilization.
28. (28) “Urban Turf” or “Lawns” means non agricultural land planted in closely mowed, managed grasses except golf courses, parks and athletic fields.

Rulemaking Authority 570.07(23), 576.181 FS. Law Implemented 576.011, 576.041 FS. History—New 1-27-26.