Thus, the sprayings ordinary chernozem with Dniestr water and applying of mineral fertilizers did not promote impairment of microbiological processes of ground. On the contrary - as a result of magnification of number of ammonificators, nitrifiers and bacterias shattering humus the supply of plants by the mineral shapes of nutrient materials has increased, the process of disintegrating of vegetative oddments and upbuildings of azote with the participation of legume bacteria, mesofaune of ground was intensified. All this results in the balanced supply of plants by nutrient materials during all vegetation period, to an abatement of an amount once only of applied easily dissoluble mineral fertilizers and, as a consequent, to a decrease of negative ecological repercussions.