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  2. Saltpetre works - Wikipedia

    en.wikipedia.org/wiki/Saltpetre_works

    A saltpetre works or nitrary[1] is a place of production of potassium nitrate or saltpetre used primarily for the manufacture of gunpowder. The saltpeter occurs naturally in certain places like the "Caves of Salnitre" (Collbató) known since the Neolithic. In the "Cova del Rat Penat", guano (bat excrements) deposited over thousands of years ...

  3. Potassium nitrate - Wikipedia

    en.wikipedia.org/wiki/Potassium_nitrate

    Infobox references. Potassium nitrate is a chemical compound with a sharp, salty, bitter taste and the chemical formula K N O 3. It is an ionic salt of potassium ions K + and nitrate ions NO 3−, and is therefore an alkali metal nitrate. It occurs in nature as a mineral, niter (or nitre outside the US). [ 5 ]

  4. 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 ...

  5. Potassium deficiency (plants) - Wikipedia

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

    A potassium-deficient grape leaf. Potassium deficiency, also known as potash deficiency, is a plant disorder that is most common on light, sandy soils, because potassium ions (K +) are highly soluble and will easily leach from soils without colloids. [ 1 ] Potassium deficiency is also common in chalky or peaty soils with a low clay content.

  6. Fertilizer - Wikipedia

    en.wikipedia.org/wiki/Fertilizer

    Six tomato plants grown with and without nitrate fertilizer on nutrient-poor sand/clay soil. One of the plants in the nutrient-poor soil has died. Inorganic fertilizer use by region [23] Fertilizers enhance the growth of plants. This goal is met in two ways, the traditional one being additives that provide nutrients.

  7. Plant nutrition - Wikipedia

    en.wikipedia.org/wiki/Plant_nutrition

    The potassium ion (K +) is highly mobile and can aid in balancing the anion (negative) charges within the plant. A relationship between potassium nutrition and cold resistance has been found in several tree species, including two species of spruce. [12] Potassium helps in fruit coloration, shape and also increases its brix. Hence, quality ...

  8. Guano - Wikipedia

    en.wikipedia.org/wiki/Guano

    The nest of the Peruvian booby is made of almost pure guano. Guano (Spanish from Quechua: wanu) is the accumulated excrement of seabirds or bats. Guano is a highly effective fertilizer due to the high content of nitrogen, phosphate, and potassium, all key nutrients essential for plant growth.

  9. Niter - Wikipedia

    en.wikipedia.org/wiki/Niter

    Niter or nitre [5] is the mineral form of potassium nitrate, KNO 3.It is a soft, white, highly soluble mineral found primarily in arid climates or cave deposits. Historically, the term niter was not well differentiated from natron, both of which have been very vaguely defined but generally refer to compounds of sodium or potassium joined with carbonate or nitrate ions.