Growth of microorganisms in rhizosphere of plants of hulless oats and productivity of the crop under action of fertilizers and biological preparation Microhumin

Abstract

The purpose. To study features of growth of micro-organisms in rhizosphere soil of plants of hulless oats and productivity of the crop under action of fertilizers and microbial specimen. Methods. Field researches, conventional microbiological, gas-and-chromatographic determination of potential activity of nitrogen fixation and potential emission of N20. Results. After-effect of muck and green fertilizers, as well as doses of mineral fertilizers, which did not exceed N80P:tOK45, promoted growth of agronomically valuable microorganisms at cultivation of hulless oats on sod-podzolic soil and formation of productivity of the crop. Application of microbial specimen Microhumin was effective. Its influence on productivity of oats in experiment was equivalent to action of mineral fertilizers in dose of N30P15K20. Conclusions. Features of formation of communities of microorganisms in rhizosphere soil of plants and manifestation of their functional activity was the reliable indicator of ecological state of soils of agrocnosises.