FERTILITY AND PHYSICAL AND CHEMICAL PROPERTIES OF THE WESTERN CAUCASUS LEACHED CHERNOZEM UNDER LONG-TERM USE OF MINERAL FERTILIZERS

Abstract

The effect of long-term (2000-2010) use of mineral fertilizers on physico-chemical and agro-chemical properties of soil under steady-state experiment on leached chernozem was studied. During the experiment the acidity of the soil on non-fertilized variant has increased. Mineral fertilizers had an additional effect on acidifying of the soil. Their application did not provide the reproduction of humus in the soil, but increased the content of mineral forms of nitrogen and mobile compounds of phosphorus and potassium.