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2. Nitrophosphate process - Wikipedia

   en.wikipedia.org/wiki/Nitrophosphate_process

   The nitrophosphate process (also known as the Odda process) is a method for the industrial production of nitrogen fertilizers invented by Erling Johnson in the municipality of Odda, Norway around 1927. The process involves acidifying phosphate rock with dilute nitric acid to produce a mixture of phosphoric acid and calcium nitrate.

3. Reuse of human excreta - Wikipedia

   en.wikipedia.org/wiki/Reuse_of_human_excreta

   Only a fraction of the nitrogen-based fertilizers is converted to produce plant matter. The remainder accumulates in the soil or is lost as run-off. [46] This also applies to excreta-based fertilizer since it also contains nitrogen. Excessive nitrogen which is not taken up by plants is transformed into nitrate which is easily leached. [47]

4. Fertilizer - Wikipedia

   en.wikipedia.org/wiki/Fertilizer

   Nitrogen fertilizers are made from ammonia (NH 3) produced by the Haber–Bosch process. [28] In this energy-intensive process, natural gas (CH 4) usually supplies the hydrogen, and the nitrogen (N 2) is derived from the air. This ammonia is used as a feedstock for all other nitrogen fertilizers, such as anhydrous ammonium nitrate (NH 4 NO 3 ...

5. Discovering how to make 'synthetic nitrogen' became life's ...

   www.aol.com/news/discovering-synthetic-nitrogen...

   Carbon, nitrogen, and oxygen. None is more important than the other but if there's a first among equals it would be nitrogen. Discovering how to make 'synthetic nitrogen' became life's massive ...

6. CULTAN Fertilization - Wikipedia

   en.wikipedia.org/wiki/CULTAN_Fertilization

   Although CULTAN fertilization is only done for nitrogen application, injection irrigation can also be used for other types of fertilizers. The most common way to inject fertilizer into the ground, regardless of chemical type, is through the drip method. The drip method involves an irrigation pump and a chemical injection pump.

7. History of the Haber process - Wikipedia

   en.wikipedia.org/wiki/History_of_the_Haber_process

   The history of the Haber process begins with the invention of the Haber process at the dawn of the twentieth century. The process allows the economical fixation of atmospheric dinitrogen in the form of ammonia, which in turn allows for the industrial synthesis of various explosives and nitrogen fertilizers, and is probably the most important industrial process developed during the twentieth ...