Agriculture and forestry

Polishchuk Mikhaylo Ivanovuch – Candidate of Agricultural Sciences, Associate Professor of the department of agriculture, soil science and agrochemistry of the Vinnytsia National Agrarian University (21008, Vinnytsia, Soniachna Str. 3, e-mail: polishchuk.mikhaylo@ukr.net).

Mazur Aleksandr Vasylovych – Candidate of Agricultural Sciences, Associate Professor of the department of plant production, selection and bioenergetic cultures of the Vinnytsia national agrarian university (21008, Vinnytsia, Soniachna Str. 3, e-mail: vd@vsau.vin.ua).

Yurchenko Natalia Anatolievna – Post-Graduate student of the Department of Plant Production, Selection and Bioenergetic Cultures of Vinnytsia National Agrarian University (Vinnytsia, Soniachna Str. 3).

Field similarity of seeds of soybean varieties depends on the sowing lines for the temperature of the soil. Analyzed changes in weather conditions of the years of research. It has been established that the beginning of spring is accompanied by an intensive increase in air and soil temperature with a moisture deficit. It was established that the increase in temperature by 4.3 - 6.3 ° C in the first decade of April contributes to the sowing of soybeans, however, in some years (2017), the return of cold weather and precipitation caused Syamyan to rot in the soil and significantly reduced field similarity led to the death of seeds for sowing according to soil temperature conditions of 6 ° С. It is optimal to carry out the sowing of soybean varieties beyond the soil temperature regime of 10 ° C, and the delay in sowing and carrying it out over the soil temperature caused a decrease in field similarity in 2016 and 2018 by 5-7%.

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