For a long time the person when using the earth estimated it first of all from the point of view of ability to make a crop of plants. Ecologically to estimate separate characteristics of soils and a soil cover as a whole concerning fertility for plants follows very circumspectly, as the soil – the complete system interconnected and vzaimoobuslovlenny. Therefore one quality, positive for these or those plants, can be negative for others.

Keywords: soil, efficiency, fertility, agriculture, humus, intensification