TY JOUR TI MANAGEMENT OF SOIL FERTILITY FACTORS IN THE CONDITIONS OF THE REPUBLIC OF TATARSTAN KW Resource-saving technologies KW addition density KW productive moisture KW yield KW crop rotation KW economic assessment JO Agrobiotechnologies and digital farming AU Minikaev, R.V. AU Fashutdinov, F.S. AU Mihaylova, M.Y. PY 2022 IS 1 PB Kazan state agrarian University