enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Labeling of fertilizer - Wikipedia

    en.wikipedia.org/wiki/Labeling_of_fertilizer

    Fertilizers are usually labeled with three numbers, as in 18-20-10, indicating the relative content of the primary macronutrients nitrogen (N), phosphorus (P), and potassium (K), respectively. More precisely, the first number ("N value") is the percentage of elemental nitrogen by weight in the fertilizer; that is, the mass fraction of nitrogen ...

  3. Plant nutrients in soil - Wikipedia

    en.wikipedia.org/wiki/Plant_nutrients_in_soil

    While there is on average 1000 lb per acre (1120 kg per hectare) of phosphorus in the soil, it is generally in the form of orthophosphate with low solubility, except when linked to ammonium or calcium, hence the use of diammonium phosphate or monocalcium phosphate as fertilizers. [82] Total phosphorus is about 0.1 percent by weight of the soil ...

  4. Fertilizer - Wikipedia

    en.wikipedia.org/wiki/Fertilizer

    Fertilizers are applied to crops both as solids and as liquid. About 90% of fertilizers are applied as solids. The most widely used solid inorganic fertilizers are urea, diammonium phosphate and potassium chloride. [54] Solid fertilizer is typically granulated or powdered. Often solids are available as prills, a solid globule. Liquid ...

  5. Leaf blowers, lawn mowers and fertilizer: How lawns ... - AOL

    www.aol.com/news/leaf-blowers-lawn-mowers...

    At least 40 million acres in the United States, an area larger than the state of Georgia, are covered by turf grass, the standard lawn plant. Leaf blowers, lawn mowers and fertilizer: How lawns ...

  6. The Forgotten Fertilizer - AOL

    www.aol.com/news/2014-03-03-the-forgotten...

    The annual demand for phosphate as a fertilizer nutrient in 2014 is projected to be over 44 million tonnes, sold primarily as monoammonium phosphate (MAP) and diammonium phosphate (DAP).

  7. Soil fertility - Wikipedia

    en.wikipedia.org/wiki/Soil_fertility

    Nitrogen and potassium are also needed in substantial amounts. For this reason these three elements are always identified on a commercial fertilizer analysis. For example, a 10-10-15 fertilizer has 10 percent nitrogen, 10 percent available phosphorus (P 2 O 5) and 15 percent water-soluble potassium (K 2 O). Sulfur is the fourth element that may ...

  8. Ammonium phosphate - Wikipedia

    en.wikipedia.org/wiki/Ammonium_phosphate

    Both triammonium salts evolve ammonia. In contrast to the unstable nature of the triammonium salts, the diammonium phosphate (NH 4) 2 HPO 4 and monoammonium salt (NH 4)H 2 PO 4 are stable materials that are commonly used as fertilizers to provide plants with fixed nitrogen and phosphorus. [3] Ammonium phosphate is the main ingredient in pink ...

  9. Superphosphate - Wikipedia

    en.wikipedia.org/wiki/Superphosphate

    The availability of suitable phosphate-rich rocks is limited and estimates of "peak phosphorus" vary between 30 years from 2022, [20] or somewhere between 2051 and 2092. [21] As the human population increases and the demand for food increases, the availability of superphosphate fertilisers in the future may be less secure, suggesting that ...