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2. Controlled-release fertiliser - Wikipedia

   en.wikipedia.org/wiki/Controlled-release_fertiliser

   A controlled-release fertiliser ( CRF) is a granulated fertiliser that releases nutrients gradually into the soil (i.e., with a controlled release period). [2] Controlled-release fertilizer is also known as controlled-availability fertilizer, delayed-release fertilizer, metered-release fertilizer, or slow-acting fertilizer.

3. Milorganite - Wikipedia

   en.wikipedia.org/wiki/Milorganite

   milorganite .com. Milorganite building. Milorganite is a brand of biosolids fertilizer produced by treating sewage sludge by the Milwaukee Metropolitan Sewerage District. [1] The term is a portmanteau of the term Milwaukee Organic Nitrogen. The sewer system of the District collects municipal wastewater from the Milwaukee metropolitan area.

4. Coated urea - Wikipedia

   en.wikipedia.org/wiki/Coated_urea

   Coated urea fertilizers are a group of controlled release fertilizers consisting of prills of urea coated in less-soluble chemicals such as sulfur, polymers, other products or a combination. These fertilizers mitigate some of the negative aspects of urea fertilization, such as fertilizer burn. The coatings release the urea either when ...

5. Urea-formaldehyde - Wikipedia

   en.wikipedia.org/wiki/Urea-formaldehyde

   Foams have been used as artificial snow in movies. Urea-formaldehyde is widely used in agriculture as a slow-release fertilizer, which release small amounts of the active ingredient over time. Agricultural use. Urea-formaldehyde compounds are a widely used as slow-release sources of nitrogen in agriculture.

6. Ammonia volatilization from urea - Wikipedia

   en.wikipedia.org/wiki/Ammonia_volatilization...

   Ammonia volatilization from urea. Urea (46-0-0) accounts for more than fifty percent of the world's nitrogenous fertilizers. [1] It is found in granular or prill form, which allows urea to be easily stored, transported and applied in agricultural settings. It is also the cheapest form of granular nitrogen fertilizer.

7. Labeling of fertilizer - Wikipedia

   en.wikipedia.org/wiki/Labeling_of_fertilizer

   Pure KCl fertilizer would thus be labeled 0-0-63. Since sylvite contains other compounds that contribute no N, P, or K, it is usually labeled 0-0-60. NPK values for commercial fertilizers NPK values for various synthetic fertilizers. 15-0-0 Calcium nitrate; 21-0-0 Ammonium sulphate; 30-0-0 to 40-0-0 Sulfur-coated urea (slow release)