An organic compound is a substance containing carbon and hydrogen, usually other elements such as nitrogen, sulfur and oxygen. Organic compounds can be found in the natural environment or synthesized in the laboratory. The expression organic substance is not equivalent to natural substance.
▶ That is to say that a substance is natural when it is essentially the same as that found in nature, however, organic means that it is made up of carbon.
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For example, organic manure includes manures made from livestock manure, rural and urban compost, other animal wastes and crop residues. Organic manures are materials whose effectiveness in improving soil fertility and productivity has been demonstrated.
In the case of biofertilizers or biological fertilizers, they are based on microorganisms, which promote and benefit plant nutrition and growth. These are soil microorganisms, generally fungi and bacteria, which are naturally associated with plant roots in a more or less intimate way.
Plant growth-promoting and nutritional microorganisms facilitate, directly or indirectly, the availability of certain nutrients for plants, such as nitrogen.
Phosphorus or water, although some also produce substances (phytohormones) that promote plant growth. In addition, some of these microbes can be combined, resulting in synergistic effects when applied together.
NOTE: Reference material.