Dissolved organic matter and microbial carbon of Protocalcic Chernozems of different land management

Water-extractable organic matter is the most active and mobile form of soil carbon. The other fraction extremely biolabile carbon constituent microorganisms. Both these fractions play an essential role in agrocenoses global cycle on our planet. aim work was to estimate content water-extractable as well that microbial origin typical chernozems (Protocalcic Chernozems) different land-use types. Protocalcic Chernozem samples taken from fields long-term experiments with types land use were investigated: a permanent bare fallow for 55 years (since 1964); conventional tillage – four-field crop rotation, first rotation; direct seeding rotation similar seeding, 21-year 1998) after 34 1964). We determined origin. In studied series variants, proportion total amount upper horizon (0–15 cm) 0.69, 0.85, 1.01, 0.98%, respectively, while 0.27, 0.55, 0.53, 1.52%. It noted against background increasing variant, compared traditional treatment, biomass this variant does not increase. unlike all use, characterized by higher carbon, contrast matter.