A fertilizer or fertilizer is any substance that contains one or several chemical elements necessary for the nutrition of the crops and that is contributed to the vegetables, via foliar or radicular, to increase their productivity and / or quality.

The chemical elements that vegetables extract in a greater quantity of fertilizers are the so-called macronutrients. The main macronutrients are: nitrogen, phosphorus and potassium; These three elements are, therefore, the axis of good fertilization, although it is necessary to follow other elements such as calcium, magnesium, iron ... Fertilizers can be of organic or mineral origin, although the former have a clear advantage in terms of production and the environment.