Labile organic matter and fertility of chernozems

Soil organic matter can be divided into stable and labile, with the latter directly supporting plant growth development during growing season. To restore soil fertility ensure high productivity of agrocenoses, a certain ratio between labile parts humus must maintained. The purpose this study was to determine content under different tillage fertilisation options establish optimal their total carbon, based on which develop measures improve chernozem soils. In stationary experiments, investigated impact intensity use, its cultivation systems state amount carbon. Field research, laboratory method sample analysis, systematisation, generalisation were used in study. samples analysed for according DSTU 4289:2004 4732:2007. When chernozems are ploughed up, is mineralised most share decreases, while when arable land converted fallow land, it restored fastest. Minimising applying mineral fertilisers increases chernozems. use no-till sixteen years resulted 0.13% increase content, 0.53% over forty-two compared ploughing. application organo-mineral fertiliser increased carbon unfertilised variants. A strong correlation found yield winter wheat maize. practical significance research results minimise rate C:N gross crop yields