TY JOUR TI RESPONSIVENESS OF SPELT WHEAT VARIETIES TO CALCULATED DOSES AND COMBINATION OF MACRONUTRIENTS IN THE CONDITIONS OF KAMA REGION OF THE REPUBLIC OF TATARSTAN KW nutrients KW spring wheat KW two-grained wheat KW productivity KW removal of nutrients JO Vestnik of Kazan State Agrarian University AU Amirov, M.F. AU Semenov, P.G. AU Minnullin, G.. AU Gilyazov, M.. PY 2024 IS 19 PB Kazan state agrarian University