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  2. History of fertilizer - Wikipedia

    en.wikipedia.org/wiki/History_of_fertilizer

    Johann Friedrich Mayer (1719–1798) was the first to present to the world a series of experiments upon it the relation of gypsum to agriculture, and many chemists have followed him in the 19th century.

  3. Fertilizer - Wikipedia

    en.wikipedia.org/wiki/Fertilizer

    A farmer spreading manure to improve soil fertility. A fertilizer (American English) or fertiliser (British English) is any material of natural or synthetic origin that is applied to soil or to plant tissues to supply plant nutrients.

  4. Beaker (laboratory equipment) - Wikipedia

    en.wikipedia.org/wiki/Beaker_(laboratory_equipment)

    (A) A low-form or Griffin form beaker (B) A tall-form or Berzelius beaker (C) A flat beaker or crystallizer Philips beaker which can be swirled like a conical flask. Standard or "low-form" (A) beakers typically have a height about 1.4 times the diameter. [3]

  5. Pupuk Kalimantan Timur - Wikipedia

    en.wikipedia.org/wiki/Pupuk_Kalimantan_Timur

    In 2007, Pupuk Kaltim made the NPK factory fuse blending in Bontang to produce NPK with phosphates imported from Morocco. The Kaltim 5 plant, which is planned to have a capacity of 1.2 million tons of urea per year, will soon be realized by the Kaltim-5 Factory PKT which will replace the existence of the Kaltim-1 factory unit which is likely to ...

  6. Pupuk - Wikipedia

    en.wikipedia.org/wiki/Pupuk

    Pupuk is the name given to a magical substance which was used by the Batak shamans of North Sumatra. The pupuk is the main feature to perform black magic , e.g. to inflict damage to enemies. Method of creating the pupuk is inscribed in the pustaha , the magic book of the Toba people, among which involved the kidnapping and murder of a child ...