Hadzovskyi H. Optimization of elements of soybean growing technology in western Polissya of Ukraine

The dissertation presents a theoretical substantiation and practical solution of the scientific problem of increasing grain productivity of soybean varieties by establishing the peculiarities of growth and development and optimization of elements of cultivation technology (inoculation, Feeding ) depending on varietal characteristics and growing season conditions in the western Polissya of Ukraine. The generalization and analysis of scientific achievements of domestic and foreign authors on the peculiarities of growth and development of soybean plants, the formation of its yield depending on Feeding crops with chelated microfertilizers and seed inoculation. It is established that the soil and climatic conditions of the western Polissya of Ukraine are favorable for soybean cultivation. Studies have shown that Feeding crops with chelating microfertilizers Wuxal Oilseed at the beginning and in full bloom ( BBCH 60-66) with a rate of 2.0 l / ha, Quantum Oil - in the budding phase (before flowering) ( BBCH 50-59) and at the beginning of seed formation ( BBCH 71-73) caused the lengthening of the growing season of the studied varieties to 12-14 days compared with the control, as a result of which the onset of phenological phases was also delayed in time. The height of saliva, under the influence of this factor, depending on the phase of growth and development of plants, varietal characteristics, also increased by 8-10% compared to control variants. Depending on the varietal characteristics, the ES Mentor variety was characterized by a more intensive growth of vegetative mass and a rapid rate of increase in plant height compared to the Kassidy variety. It was found that investing in the production of the grain of early soybean varieties with inoculation of seeds with Legume Fix and double application (at the beginning and in full bloom, BBCH 60-66) of chelated microfertilizer Wuxal Oilseed at a rate of 2.0 l / ha significantly increases the economic and energy efficiency of growing crops on sod-podzolic soils of the western Polissya of Ukraine.