EFFECT OF STRAW AND GREEN MANURE ON BIOLOGICAL CONDITION SODDY-PODZOLIC SOILS

Estimation of changes of a biological condition (status) soddy-podzolic sandy soil under the influence of use of mineral fertilizers and biological resources (straw of a winter wheat and stubble green manure, separately and in a combination) was an objective of this research. Among the investigated kinds of fertilizers the strongest influence on the mortmass and mortmass carbon, number, activity of soil microflora and the content of soil microbial biomass have rendered straw in a combination with , postharverst green manure (intermediate culture), at the expense of increase in an input of the easily accessible for soil microflora organic matter. In this research mineral fertilizers without additives of organic materials essentially have not affected microbiаl activity