Ammonia isn’t used directly as a fertilizer; but it’s pretty easy to turn into ammonium nitrate. There are commercially available “mini factories” [1] that pres

Ammonia isn’t used directly as a fertilizer; but it’s pretty easy to turn into ammonium nitrate. There are commercially available “mini factories” [1] that presumably mitigate the carbon cost of transport from a huge centralized fertilizer factory. The famine prevented by the NPK fertilizer cycle is probably the greatest contributor to the population growth of the 20th century, so suffice to say it’s very well understood by agricultural chemists worldwide. [1] https://www.fertilizer-machine.com/product/Fertilizer_Production_Line/mini-compound-fertilizer-production-line.html https://www.fertilizer-machine.com/product/Fertilizer_Produc...