Agriculture and forestry

Didur Ihor – Candidate of Agricultural Sciences, Professor, Acting the director of the Institute of Agricultural Technologies and Nature Management of the Vinnytsia National Agrarian University (21008, Soniachna Str. 3, Vinnytsia, email: didurihor@gmail.com).

Сomprehensive assessment of the biological technology of soybean cultivation is a scientifically valuable and urgent problem of today, which made it possible to choose the optimal ways of realizing the genetic potential of varieties in the conditions of climatic changes. The purpose of the study was to investigate the indicators of soybean seed yield depending on pre-sowing seed treatment and foliar fertilization. Field and laboratory research was carried out during 2017-2021 at the experimental sites of the Agronomichne National Agricultural University of Vinnytsia National Agrarian University. Research conducted in the conditions of the right-bank forest-steppe on gray forest soils indicates that the yield of soybean seeds largely depended on the hydrothermal conditions of the years of research and the factors studied, namely, pre-sowing inoculation of seeds and foliar fertilization. So, on average, for 2017-2021, seed yield ranged from 2.47 to 3.31 t/ha. The maximum yield of soybean seeds of 3.31 t/ha was formed in the variants where, before sowing, soybean seeds were treated with BTU Bioinoculant inoculant (2 l/t) and two foliar top dressings were carried out with fertilizers in the phase of the 3rd trifoliate leaf and budding with organo-mineral fertilizer Helprost soybean (2.5 l/ha), which is 0.84 t/ha (34.0%) more compared to the control without pre-sowing seed treatment and foliar fertilization. According to the results of the dispersion analysis of the obtained data, it was established that the value of the increase in soybean seed yield was 40.8% dependent on seed inoculation and 42.8% on foliar fertilization, the interaction of factors was 2.7%, and other unaccounted factors were 13 .7%. The relevance of the conducted research is enhanced by tasks of the state theme, which are carried out at the expense of the state budget on the topic: «Development of ecologically oriented technologies for growing bioenergy crops to ensure energy independence and soil conservation for the formation of climate neutrality».

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