Microbiological and ecophysiological parameters of sod-podzolic soil upon long-term application of straw and mineral fertilizers, the correlation with the yield

In modern agriculture, top priority is given to requirements for environmentally friendly application of fertilizers, providing for the intensification of use of biological sources of soil fertility recovery, primarily bioresources of farming ecosystems. One of significant, easily renewable biological resources is field residues of agricultural crops, which, according to many researchers, are the key to sustainable crop production and biosphere preservation. In this regard, one of main requirements for biologically based resource-saving methods and agrotechnologies is the returning of afterharvesting residues back into the soil without alienating the ones from the field, which ensures the enhancement of organic carbon input, improvement of biological status of soils, and their fertility and productivity, in general. A number of domestic and foreign papers prove the plant residues (PR), the structure of which consists of over 80 % of straw of cereals and leguminous crops, to be important for the preservation of favorable microbiological state of the soil...