Petrishyn D. Optimization of elements of adoptive technology of growing new varieties of common vetch on seeds under conditions in central Forest steppe of Ukraine

The dissertation presents the results of the author's 3-years researches in conditions of central Forest steppe of Ukraine, which concerning the influence of rate quantity of seeds, pre-sowing inoculation campaign and foliar feeding the phase of budding, set their influence in forming photosynthetic and symbiotic rates on the process of plant growth and development, forming of yielding and quality of common vetch seeds. Energetic and economic efficiency was determined. According to the results of the investigation, optimum of rate quantity of seeds presents maximum of yielding. So, the highest yielding of Eugena rate forms at the level 1.6 million seeds /ha (2.79 t/ha), a grade of Yaroslava - seeding rate by 1.2 million seeds /ha (3.08 t/ha). The use of inoculation of seeds ryzohumin (2 kg/t seed) followed by foliar feeding in the budding phase, reacom-r-beans (4 l/ha) provides increased yields of spring vetch seeds compared with the control grade Yaroslava at 0.81 t/ha, or 31 %.