Taxonomic composition and organization of the microbial community of soddy-podzolic soils after application of straw of cereal crops and using of the Barkon biopreparation

The modern concept of the reproduction of soil organic matter (SOM) requires the sequestration of the carbon of plant residues in the soil by the formation of stable organic compounds. In this regard. the role of microbial preparations, accelerating the decomposition of straw are important. Learning the taxonomic structure of the microbial community in these processes is of great importance and not well understood. Microbial communities of arable soddy-podzolic soils decomposing straw of grain crops were studied in field and laboratory experiments. Straw (rye, wheat and oat) were crushed and inoculated with the Barkon preparation (complex association of microorganisms developed at the FGBNU ARRIAM). The functioning of the microbial community was assessed by the number and activity of microorganisms, the agrochemical properties of the soil. The composition of bacterial community of soils was determined by high-performance sequencing of 16s rRNA gene libraries. The rate of decomposition of straw was controlled by the ratio C:N in it: rye straw