The assessment of the influence of preparations of phytogenesis on the growth and development of soybean micro- and macrosymbionts

The goal of the study was the search for biological preparations having diverse influence on the growth and development of soybean plants of variety Garmoniya compatible with the collection strains of rhizobia of the species Bradyrhizobiumjaponicum (Jordan, 1982), Sino-rhizobiumfredii (Scholla, Elkan, 1984), Bradyrhizobi-umelkanii (Kuykendalletal., 1992) of the Amur selection. The research tasks were to study the resistance of rhi-zobia strains to biological preparations used for pre-sowing seed treatment, the assessment of the effect of being studied preparations on the growth and develop-ment of soybean variety Garmoniya, virulence of pure cultures of rhizobia. Microbiological and biological methods were used in the research. Laboratory experi-ments were conducted at the All-Russian Scientific Re-search Institute of Soybean (FSBSI “All-Russian SRI of Soybean”, Blagoveshchensk). As a result of the study of plant preparations (on the basis of natural extracts, de-rived from Dahurian larch) - EcoLarix, Arabinogalactan, Dihydroquercetin (DQС), Premix, Extractor - it was found out that only the properties of strain, regardless of tested preparations, had an influence on the intensity of growth of the collection pure cultures of rhizobia...