TY JOUR TI THE EFFECTIVENESS OF THE USE OF ORGANOMINERAL AMINOVELL FERTILIZER ON SUNFLOWER CROPS IN THE SOIL AND CLIMATIC CONDITIONS OF THE REPUBLIC OF TATARSTAN KW sunflower KW organomineral fertilizer KW Aminovell KW yield KW oil content KW crop structure KW gross harvest JO Agrobiotechnologies and digital farming AU Suleymanov, S.R. AU Safiollin, F.N. PY 2023 IS 2 PB Kazan state agrarian University