V. KRUGLOV1 1All-Russian Research Institute for Agricultural Microbiology, Federal Agency of Scientific Organizations, 3, sh. <...> Supported by Russian Science Foundation (grant ¹ 14-26-00094) Received November 20, 2015 A b s t r a c t Modern agriculture is developing in the direction of producing consistently high yields and high quality seed production. <...> In this regard, the precision agricultural technologies are develop for the leveling a soil conditions. <...> Individual phenotypic characteristics of plant are determined by the local soil conditions near their root’s systems. <...> As a result, the variance of plant’s height is dependent on the spatial distribution of energy resources and nutrients in the soil. <...> The variance of plant's height restricted to the genetic norm for this characteristic and it can been reduced when a soil conditions are leveled. <...> We assume that the effect of microbiological leveling soil conditions (MLSC) may be observed during destruction of plant’s residues using microbial preparation. <...> In addition, we have obtained new practically important results thanks to the use of the original fractal analysis of molecular-genetic data of the soil microbial community. <...> The goal of this work was experimental and theoretical study of MPSC effect arising after destruction of plant’s residues with the using of the microbial preparations, which was been developed in the All-Russian Research Institute of Agricultural Microbiology. <...> In the first experiment, the variances of the barley plant’s height were been investigated after the destruction of plant residues using a microbial preparation Barkon. <...> Out the second experiment used data of the molecular-genetic analysis of soil microbial communities after the destruction of plant’s residues using three microbial preparations: Barkon, Bags and Omug. <...> The preparation Barkon contains the consortium of bacteria and fungi; Bugs is a consortium of cellulolytic organisms, derived from biologically active soil; Omug is the microbial fertilizer obtained after biotechnological processing of poultry manure. <...> The functional activity of microbial networks arising during the destruction of plant’s residues with using of microbial preparations was been studied using fractal analysis of molecular genetic data of microbial communities in soil. <...> With using of the fractal analysis was been obtained the fractal taxonomic portrait of microbial communities and the index of the functional <...>