TY JOUR TI FERTILIZATION OF SPRING WHEAT IN THE CONDITIONS OF GRAY FOREST SOILS OF THE ANCESTRAL REGION OF THE REPUBLIC OF TATARSTAN KW spring wheat; fertilizers; yield; nutrition backgrounds; grain quality; vitreousness; grain nature; weight of 1000 seeds; yield JO Agrobiotechnologies and digital farming AU Serzhanova, A.R. AU Biktagirova, E.R. PY 2022 IS 1 PB Kazan state agrarian University