Agriculture and forestry

Hanna Pantsyreva – Doctor of Agricultural Sciences, Associate Professor, Leading Researcher, Deputy Director of the Research Institute of Agrotechnology and Environmental Management of Vinnytsia National Agrarian University (21008, Vinnytsia, Sonyachna St. 3, e-mail: apantsyreva@ukr.net).

Volodymyr Kovalchuk – Рostgraduate student at the Department of Forestry and Horticulture of Vinnytsia National Agrarian University (21008, Vinnytsia, Sonyachna St. 3, e-mail: vk140550@gmail.com).

The article presents the results of experimental studies conducted in 2024-2025 at the experimental field «Agronomichne» of Vinnytsia National Agrarian University. The aim of the work is to determine the effectiveness of the use of biological products and organo-mineral fertilizers for pre-sowing treatment of soybean seeds in agrocenoses of the Right-Bank Forest-Steppe and to assess the synergistic effect on biometric indicators and productivity of soybean varieties Koroleva and Azimut. By the maturity group, the studied varieties belong to mid-ripening. During the experimental studies, it was noted that in ВВСН 87-92 in the Koroleva variety the plant height was 105.32 cm, and in the Azimut variety, respectively, 82.92 cm. The height of attachment of the lower bean, the highest in the control variant of the Azimut variety, was 19.92 cm. The effect of the biological product and organo-mineral fertilizer on this technological characteristic was not observed, while the Koroleva variety showed the highest height of attachment of the lower bean in two variants of the experiment with the use of Rizoline-r in combination with the bioprotector Rizosave-r (17.40 cm) and Rizoline-r in combination with the bioprotector Rizosave-r with the use of the organo-mineral fertilizer Helprost soy 17.40 cm. The greatest branching in the Koroleva variety was obtained with the combined use of Rizoline-r in combination with the bioprotector Rizosave-r and the organo-mineral fertilizer Helprost soy (4.20 pcs.), while in plants of the Azimut variety - 4.68 pcs. On the average number of beans in one pod of the Koroleva variety, pre-sowing seed treatment with a biological preparation and organo-mineral fertilizer had a slight effect relative to the control, with treatment with a biological preparation and organo-mineral fertilizer 2.60 beans in one pod, control 2.57 beans in one pod. The Azimut variety was characterized by a significant increase in this indicator under the condition of pre-sowing seed treatment with the organo-mineral fertilizer Helprost soy (2.53 beans in one pod). The highest average grain weight per plant in the studied varieties was obtained when using the biological preparation Rizoline-r in combination with the bioprotector Rizosave-r and organo-mineral fertilizer Helprost soy in pre-sowing seed treatment (Korolev variety 9.00 g on average per plant, Azimut variety 9.60 g on average per plant). Studies show that the maximum yield of the Koroleva and Azimut soybean varieties is achieved under conditions of complex pre-sowing seed treatment. This treatment includes the use of the biopreparation Rizoline-r in combination with the bioprotector Rizosave-r and the organo-mineral fertilizer Helprost soy. Under such conditions, the yield of the Koroleva variety is 3.60 t/ha, and the Azimut variety is 4.02 t/ha.

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