Biological nitrogen contribution to the increased forage value of soybean grains in the Non-Chernozem zone of Russia

• Published in: IOP conference series. Earth and environmental science 2023-06, Vol.1206 (1), p.12012
• Main Authors: Belyshkina, M E, Kobozeva, T P, Ananyeva, T V, Popova, N P, Yu Romanovskaya, A
• Format: Article
• Language: English
• Subjects: Amino acids; Biological effects; Fatty acids; Inoculation; Lysine; Nitrogen fixation; Nitrogenation; Nutrient content; Productivity; Proteins; Seeds; Soybeans; Water supply; Yield
• ISSN: 1755-1307; 1755-1315
• DOI: 10.1088/1755-1315/1206/1/012012

The article presents the results of the studied effect of biological nitrogen fixation on the yield, forage value, protein and oil productivity of soybean varieties belonging to the northern ecotype (Mageva, Okskaya and Svetlaya), depending on the water supply. Under the conditions of the Central Non-Chernozem Region, soybean varieties of the northern ecotype have been proved to provide the maximum yield of 3.05 t/ha; the protein content – of 43.51%; the fat content – of 20.67%; the protein yield – 1322 kg/ha; the yield of essential amino acids – 833 kg/ha; the fat yield – 531 kg/ha; the yield in forage units – 4118 kg/ha. In years with excessive and optimal water supply, pre-sowing seed inoculation with an active strain 605b of Rhizobium japonicum (Kirchner) significantly increases soybean productivity: the yield increases by 0.21-0.25 t/ha, the protein content in seeds – by 2.11-3.35%, the fat yield – by 0.33-0.57%, the protein yield – by 125-176 kg/ha, the fat yield – by 43-72 kg/ha, the yield of essential amino acids – by 84-111 kg/ha, the lysine yield – by 7-8 kg, the yield of unsaturated fatty acids – by 29-37 kg/ha, the yield in forage units – by 305-348 kg/ha.