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  2. Plant nutrients in soil - Wikipedia

    en.wikipedia.org/wiki/Plant_nutrients_in_soil

    Nutrients in the soil are taken up by the plant through its roots, and in particular its root hairs.To be taken up by a plant, a nutrient element must be located near the root surface; however, the supply of nutrients in contact with the root is rapidly depleted within a distance of ca. 2 mm. [14] There are three basic mechanisms whereby nutrient ions dissolved in the soil solution are brought ...

  3. Haifa Group - Wikipedia

    en.wikipedia.org/wiki/Haifa_Group

    Haifa is supplying about 30% of the global demand for Potassium Nitrate fertilizers. [1] Farmers discovered the fertilizing powers of minerals hundreds of years ago, but it was the industrial manufacturing of fertilizing products that made these advantages reachable and affordable.

  4. Potassium deficiency (plants) - Wikipedia

    en.wikipedia.org/wiki/Potassium_deficiency_(plants)

    Other inorganic potassium fertilizers include potassium nitrate, potassium sulfate, and monopotassium phosphate. Wood ash also has high potassium content but must be used cautiously due its effect on pH level. [7] Adequate moisture is necessary for effective potassium uptake; low soil water reduces K uptake by plant roots.

  5. 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 ...

  6. Nitrogen, phosphorus and potassium are the key garden ... - AOL

    www.aol.com/news/nitrogen-phosphorus-potassium...

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  7. Controlled-release fertiliser - Wikipedia

    en.wikipedia.org/wiki/Controlled-release_fertiliser

    Slow- or controlled-release fertilizer: 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 ...

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