Use endophytic bacteria to stimulate growth and development of soybean (Glycine max (L.) Merr.)

The article presents the results of using rhizobial ( Bradyrhizobium japonicum BIM В-743) and non-rhizobial ( Agrobacterium tumefaciens BIM В-1315 G and Pseudomonas brassicacearum BIM В-1228 D) endophytic soybean bacteria for both seed and vegetative plant treatment on soybean crops in the experimental field of the Polesie Institute of Plant Growing. A positive effect of treating vegetative plants of the ʻVerasʼ soybean variety with endophytes on the amount of green mass (11–34.9 %), root mass (13–26.2 %), number of beans (54.5–83.3 %), mass of 1,000 seeds (6.4–9.6 %), and mass of seeds per 1 m 2 (29.7–47.7 %) was established. The maximum positive results for all indicators were obtained with combined use of rhizobial and non-rhizobial endophytes. Pre-sowing inoculation of ʻYaseldaʼ soybean seeds with rhizobial and non-rhizobial endophytic bacteria had a positive effect on plant height (8.1–12.7 %), root mass (16.2–38.9 %), number of beans (71.4–81 %) and 1,000 seed weight (8.9–15.4 %), which ensured an annual economic effect (net additional income per 1 ha) of 595.0 BYN for green mass (excluding VAT) and 3,120.0 BYN for seeds (excluding VAT).