Agriculture and forestry

Mazur Oleksandr Vasyliovych – Candidate of Agricultural Sciences, Associate Professor of the Department of Plant Production and horticulture, Vinnytsia National Agrarian University (21008, Vinnytsia, Soniachna Str., 3 е-mail: selection@vsau.vin.ua).

Zayka Kristina − teacher at the Department of Ukrainian and Foreign Languages of Vinnytsia National Agrarian University (21008, Vinnytsia, 3 Sonyachna str., e-mail: kristaa.zayka@gmail.com).

Yakovets Volodymyr Ihorovych − graduate student of the department of plant and horticulture of VNAU (21008, Vinnytsia, 3 Sonyachna St.).

Dovgopolyi Vitaliy Serhiyovych is a postgraduate student at the Department of Botany, Genetics and Plant Protection of the Ukrainian National Academy of Sciences (21008, Vinnytsia, 3 Sonyachna St.).

The article presents the results of experimental studies of the effect of seed inoculation, fertilizer and varietal features on the processes of growth and development, the duration of vegetation and interphase periods and linear measurements of the height of soybean plants. The duration of the growing season in soybean plant varieties depended on the variety features, seed inoculation and fertilization. The longest duration of vegetation and interfacial periods was noted in the variant, where the application of Wonder Bor was carried out against the background of the application of mineral fertilizer with the norm N20P20S9 and the treatment of seeds with Maxim XL etching agent and Wonder Mikro microelements and foliar fertilization with Wonder Yelow and amounted to 109 and 111 days in Betina soybean varieties, and 114 and 115 days in Vyshyvanka variety, respectively, which is 9 and 8 days more compared to the control variant. Duration of sowing seedlings – 14 and 13; 14 and 13 days, full shoots - the third ternary leaf – 21 and 20; 22 and 21 days, the third ternary leaf - the beginning of flowering – 21 and 20; 22 and 21 days, the beginning of flowering – the end of flowering – 24 and 25; 25 and 26 days, the end of flowering – full pouring of seeds – 30 and 32; 31 and 32 days, full pouring of seeds – full ripeness – 13 and 14; 14 and 15 days, respectively. In this variant of the studies, the highest linear measurements of plant height were noted in the variant of the studies, where the application of Wonder Bor was carried out against the background of the application of mineral fertilizer with the norm N20P20S9 and the treatment of seeds with Maxim XL etching agent and Wonder Mikro trace elements and Wonder Yelow foliar fertilizer and amounted to 82.0 and 85.4 cm in Betina soybean varieties, and 86.1 and 89.7 cm in Vyshyvanka variety, which is 16.6 and 15.9 and 17.1 and 15.9 cm, respectively. The height of plants in the phase of the third ternary leaf is 39.3 and 43.4; 40.3 and 43.7 cm, the beginning of flowering is 62.5 and 65.9; 66.6 and 68.4 cm, the end of flowering is 78.1 and 79.8; 81.4 and 84.3 cm, complete pouring of seeds is 68.7 and 72.6; 73.5 and 77.2 cm.

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