Organic fertilizers

The organic fertilizers are the oldest fertilizers, which we as people are familiarly with. In the early days people were depending for their food production on the amount of available organic manure (mostly from animal resources). This manure was the deliverer of nutrients to the crop. Since the arrival of mineral fertilizers is this not necessary anymore. This means however not that we do not have to use organic fertilizers anymore. Still organic fertilizers are used to deliver nutrients to the crop, next to that they are used for adding organic material.