(a) Except as provided in subsection (b) of this section, any specialty fertilizer labeled for use on turf, when applied in accordance with the instructions on the container, may not: (1) Result in an application of: (i) More than 0.7 pounds per 1,000 square feet of water- soluble nitrogen; or (ii) More than 0.9 pounds per 1,000 square feet of total nitrogen, at least 20% of which shall consist of slow-release nitrogen; (2) Contain phosphorus, except: (i) For organic and natural organic fertilizer sold to a professional fertilizer applicator; or (ii) When specifically labeled for the following purposes: 1. Providing nutrients to specific soils and target vegetation as determined to be necessary in accordance with a soil test that was: A. Conducted by a laboratory identified under § 8- 803.7 of this article; and B. Performed no more than 3 years before the application; 2. Establishing vegetation for the first time, such as after land disturbance, provided the application is conducted in accordance with the recommended application rates established by the State; or 3. Reestablishing or repairing a turf area; and (3) Be labeled for use as a de-icer. (b) An enhanced-efficiency fertilizer labeled for use on turf, when applied in accordance with the instructions on the container, may not: (1) Result in an annual application of more than 2.5 pounds per 1,000 square feet of total nitrogen; (2) Result in an application of more than 80% of the annual recommended rate for total nitrogen established by the University of Maryland; or (3) Have a release rate of more than 0.7 pounds per 1,000 square feet of total nitrogen per month. (c) Except as provided in subsections (d) and (e) of this section, a person may not offer to sell specialty fertilizer for use on turf that, when applied in accordance with the instructions on the container: (1) Results in an application of: (i) More than 0.7 pounds per 1,000 square feet of water- soluble nitrogen; or (ii) More than 0.9 pounds per 1,000 square feet of total nitrogen, at least 20% of which shall consist of slow-release nitrogen; and (2) Contains phosphorus and is intended for use on turf unless the intended use of the fertilizer is: (i) For application to specific soils and turf as determined to be necessary pursuant to a soil test conducted by a laboratory identified in § 8-803.7 of this article and performed no more than 3 years before the application, provided the application complies with recommended application rates established by the University of Maryland; (ii) For the establishment of turf for the first time, such as after land disturbance, provided the application complies with recommended application rates established by the University of Maryland; or (iii) For the reestablishment or repair of a turf area. (d) A person may offer to sell an organic or natural organic fertilizer containing phosphorus to a professional fertilizer applicator. (e) A person may not offer to sell enhanced-efficiency fertilizer for use on turf that: (1) Results in an annual application of more than 2.5 pounds per 1,000 square feet of total nitrogen; (2) Results in an application of more than 80% of the annual recommended rate for total nitrogen established by the University of Maryland; or (3) Has a release rate of more than 0.7 pounds per 1,000 square feet of total nitrogen per month. (f) A person may not offer to sell a commercial or specialty fertilizer product for use as a de-icer.
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