TY JOUR TI THE INFLUENCE OF PREDECESSORS AND MEANS OF CHEMICALIZATION ON THE FORMATION OF THE EFFICIENCY SUMMER WHEATS IN THE CONDITIONS OF THE STEPPE ZONE OF THE REPUBLIC OF TUVA KW predecessor KW wheat KW nitrate nitrogen KW productivity KW protein. JO Bulletin of KSAU AU Sotpa, A.S. PY 2021 IS 0 PB Krasnoyarsk State Agrarian University