what is in fertilizer
A fertilizer or fertiliser (in British English) is any material of natural or synthetic origin (other than liming materials) that is applied to soils or to plant tissues (usually leaves) to supply one or more plant nutrients essential to the growth of plants.ll nitrogen fertilizers are made from ammonia (NH 3), which is sometimes injected into the ground directly. The ammonia is produced by the Haber-Bosch process. In this energy-intensive process, natural gas (CH 4) supplies the hydrogen and the nitrogen (N 2) is derived from the air.