TY JOUR TI OPTIMIZATION OF AGROTECHNOLOGICAL CONDITIONS FOR GROWING SOYBEANS ON CHERNOZEM SOILS: IMPACT ON YIELD AND SEED QUALITY KW chernozem KW soybeans (Glycine max) KW fertilizers KW foliar feeding KW yield KW protein KW vegetable fat KW fiber JO Agrobiotechnologies and digital farming AU Onischenko, L.M. AU Belozor, A.A. AU Fashutdinov, F.S. PY 2025 IS 4 PB Kazan state agrarian University