TY JOUR TI COMPARATIVE EVALUATION OF THE REACTION OF DIFFERENT VARIETIES OF SPELLED TO THE INTRODUCTION OF DESIGNED NORMS OF MINERAL FERTILIZERS IN THE FOREST-STEPPE ZONE OF THE MIDDLE VOLGA REGION KW emmer (Triticum dicoccum) KW variety KW productivity KW gross output value KW net profit KW profitability KW prime cost JO Vestnik of Kazan State Agrarian University AU Pogodina, A.V. AU Gabbasov, I.I. AU Safiollin, F.N. AU Lukmanov, A.. AU Minnullin, G.. PY 2023 IS 18 PB Kazan state agrarian University