Slow Release definition

Slow Release in relation to nitrogen, means nitrogen in a form that delays its availability for uptake and use after application, and is not rapidly available to Turf. Slow Release is also sometimes referred to as ‘controlled-release’, ‘timed-release’ or ‘slowly soluble/available’. This definition expressly excludes nitrate salts and urea.
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Slow Release. “Controlled Release,” “Timed Release,” “Slowly Available,” or “Water Insoluble” “Nitrogen” means nitrogen in a form that delays its availability for plant uptake and use after application or that extends its availability to the plant longer than a reference rapid or quick release product.
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Slow Release or “controlled release” means a fertilizer containing a plant nutrient in a form which delays its availability for plant uptake and use after application, or which extends its availability to the plant significantly longer than a reference “rapidly available nutrient fertilizer” such as ammonium nitrate or urea, ammonium phosphate, or potassium chloride. Such delay of initial availability or extended time of continued availability may occur by a variety of mechanisms. These mechanisms may include controlled water solubility of the material (by semi permeable coatings, occlusion, or by inherent water insolubility of polymers, natural nitrogenous organics, protein materials, or other chemical forms), by slow hydrolysis of water soluble low molecular weight compounds, or by other means.
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Examples of Slow Release in a sentence

  • Quantity 20 bag Unit Price 28-5-18 Pro Sol Fertilizer or equivalent, Water Soluble (25 lb bags) West Hartford - 20 Item 668 --03 -20 - Fertilizer: 32 -5-7 Fertilizer, 50% Slow Release Lot Description amended).

  • To consist of 10% Nitrogen, 6% Phosphorus, 4% Potassium (50 to 60% Slow Release) Item 668 --03 -03 - Fertilizer: 12 -0-6 Fertilizer, Fine Grade with Ammonia Sulphate and Sulphate of Potash Lot Description amended).

  • Quantity 1 bag Unit Price ▇▇▇ ▇▇▇▇ ▇▇▇▇▇▇, 4th Floor Hartford CT 06106 32-5-7 Fertilizer, 50% Slow Release Item 668 --03 -21 - Fertilizer: 34 -3-11 Lot Description amended).