Influence of biologics on the development of soybean productivity elements in the conditions of the northern Forest-Steppe of Ukraine

The purpose of the study was to determine the effectiveness of the use of biostimulants for improving growth processes and increasing soybean yields in the region. The studies were conducted on chernozem soils of medium fertility, optimal for growing legumes. The sites were divided into four groups: a control group, a group with the introduction of Bioglobin, a group with Rizohumin, and a group with the combined use of both drugs. The main parameters for evaluating the effectiveness of drugs were the number of beans per plant, the number of seeds in the bean, the weight of 1,000 seeds, and the protein and oil content in the seeds. It was found that a separate application of Bioglobin improves the photosynthetic activity of plants, contributing to intensive growth and development of leaf mass, while Rizohumin actively stimulates the development of root nodules, increasing the efficiency of nitrogen fixation and providing the plant with nitrogen. The combined use of Bioglobin and Rizohumin gave the best results, significantly increasing the overall yield and quality of soybean seeds. The synergistic effect of the drugs contributed to an increase in the weight of 1,000 seeds, the number of beans per plant, and the protein and oil content in the seeds. This showed that the use of Bioglobin and Rizohumin in a complex is an effective strategy for improving soybean productivity, reducing the need for chemical fertilisers and improving the environmental sustainability of agricultural production. The results obtained indicate a significant potential of biologics to increase soybean yields in the region and are valuable for agricultural producers who seek to optimise growing conditions without additional costs for mineral fertilisers