Cultivar specificity of the rhizobacterial effects on nitrogen-fixing symbiosis and mineral nutrition of soybean under agrocenosis conditions

Stimulation of nitrogen-fixing symbiosis by is an important mechanism of interaction between rhizobacteria and leguminous plants. At the same time, little is known about intraspecific (varietal) variability of leguminous when responding to inoculation with rhizobacteria. Our recent model studies of hydroponic soybean seedlings showed that rhizobacteria Pseudomonas oryzihabitans Ep4 can better stimulate growth and colonize the roots of Nice Mecha and Swapa soybean plants when compared to Bara variety. The purpose of this work was to study the variety-specific responses of soybeans plants to inoculation with rhizosphere bacteria (rhizobacteria) producing auxins and containing 1-aminocyclopropane-1-carboxylate (ACC) deaminase at various levels of plant mineral nutrition under agrocenosis conditions. The subject plants were three early ripening soybean Glycine max (L.) Merr. varieties of the northern ecotypes Nice Mecha, Swapa and Bara. Rhizobacterial strains Pseudomonas oryzihabitans Ep4 and Variovorax paradoxus 3-P4 were used for inoculation...