ABSTRACT
Organic carbon (C) in soil is primarily found in the humus, which also partially determines soil fertility. Thus, the concentration of organic C in soils is a major contributor to increased soil fertility of soils which is strongly influenced by the balance of humus. Carbon becomes organic when the content of humus is increased which results in a reduction of carbon dioxide (CO2) gas in the air. This in turn positively influences the ecological condition of the atmosphere. On the other hand, measures adopted to increase the humus have positive effects on water use efficiencies in desert areas. Increasing the humus content promotes the accumulation of C in the form of organic matter and conservation of water in moisture deficit conditions. It is especially important in Uzbekistan, where the soil and air temperatures are high and moisture is limited.
