The authors present the results of studies on the effect of various Bradyrhizobium elkanii strains on the growth and development of Alpera soybeans. The research was carried out in the conditions of the meadow chernozem soil of the Amur region. It is proved that the use of strains contributes to a significant increase in the aboveground mass of plants, the development of the root system and the formation of nodules. Studies have shown that the use of certain strains of Bradyrhizobium elkanii has improved the safety of plants for harvesting, without significantly affecting the timing of the onset of phenological phases and the duration of interphase periods. The variants involving inoculation with such strains as Vu-6, Vu-9, Vu-1, and Md-0 showed the highest efÏciency. The authors also made a correlation analysis of the relationship between biomorphological parameters. The obtained results confirm prospects for using the Bradyrhizobium elkanii strains to increase soybean yields.

Rafalskaya Olga M., Rafalskiy Sergey V., Rafalskaya Natalya B.

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