The effect of biopreparations of nodules bacteria with carmoisine on the formation and functioning of the soybean – Bradyrhizobium japonicum symbiotic systems

Purpose. Investigate the formation and functioning of symbiotic systems soybeans with nodule bacteria by ino­culation seeds biological products based on fungicide-resistant strains Bradyrhizobium japonicum PC07 B78 different rates synthetic carmoisine colorant. Methods. Physiological, microbiological, gas chromatography, statistical. Results. It was found that as a result inoculation soybean [Glycine max (L.) Merr] variety ‘Almaz’ microbial preparations B. B78, addition (0.25 0.5 g per 200 preparation), amount weight nodules formed roots during growing season were at level control plants or exceeded them. The greatest difference in indicators quantity root between experimental variants is noted phase full flowering both rhizobia to various norms dye. Analysis nitrogen-fixing activity (NFA) showed absence negative effect colorant its level. When inoculated three true leaves, NFA higher 15.6–25.9% budding-beginning stage 7.4–29.5% compared 0.25 carmoisine, respectively. Against background bacterization strain before N2 assimilation adding vermiculite preparation plants. During period flowering, this figure 7.6 18.8% introduction Conclusions. Carmoisine can be applied further study effectiveness use dye identifier for controlling uniformity marking loose bacterial biopreparation, since did not show impact – systems.