Soil fertilizers. Soil fertilizers are of 2 kinds, natural or organic and artificial. Artificial soil fertilizers are commonly called chemical soil fertilizers. Soil fertilizer contains chemical (artificial) or natural (organic) elements that improve the growth and productiveness of plants.
Soil fertilizers enhance the natural fertility of the soil or replace the chemical elements taken from the soil by previous crops.
The use of manure and compost as soil fertilizer is probably almost as old as agriculture. Modern chemical fertilizers include one or more of the three elements that are most important in plant nutrition: nitrogen, phosphorus, and potassium. Of secondary importance are the elements sulfur, magnesium, and calcium.
A fertile soil also provides essential nutrients for plant growth, to produce healthy food with all the necessary nutrients needed for human health. Moreover, fertility has an impact on activities with an economic impact and is therefore related to economic growth and the fight against poverty.
Soils provide anchorage for roots, hold water and nutrients. Soils are home to myriad micro-organisms that fix nitrogen and decompose organic matter, and armies of microscopic animals as well as earthworms and termites. We build on the soil as well as with it and in it. Soil plays a vital role in the Plant’s ecosystem.