The article presents the results of studies on the influence of plant density of the soybean varieties Batya i Khabarovskii yubilyar under the conditions of the Middle Amur region. We studied the influence of indicators of photosynthetic activity on the productive qualities of seeds at different seeding rates. The studies have shown that a decrease in seeding rate leads to a decrease in yield, and an increase in soybean plant density leads to an increase in yield due to the number of plants per unit area, and not due to individual plant productivity. The optimal seeding rate for soybean seeds of varieties Batya and Khabarovskii yubilyar of the day is 40–50 pcs/m2, where the yield of variety Batya was 4.5–4.8 t/ha, and that of Khabarovskii yubilyar of the day was 4.5–5.2 t/ha.

Fedorova Tamara N., Aseeva Tatyana A.

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