TRANSFORMATION OF THE PROPERTIES OF THE DARK-CHESTNUT SOIL UNDER INFLUENCE OF AGRICULTURAL USE AND IRRIGATION
The results of the transformation of virgin dark chestnut solonetzic soil properties under the influence of agricultural use and prolonged irrigation are presented. Under influence of agricultural development of soils and irrigation the direction of processes is changed, which affects on its properties and ecosystem services that it provides. Changes in the morphological profile of the soil, agrophysical and physicochemical properties have been established. The irrigation by fresh water decreases the content of Na + K from the sum of the absorbed cations to 3.3 % and 2.4 % in the 0-25 and 25-50 cm layers.