TY JOUR TI Influence of level of a nitric food on efficiency and quality of grain of winter wheat in the conditions of Predkamya of RT KW winter wheat KW grain quality KW gluten. JO Vestnik of Kazan State Agrarian University AU Tagirov, M.S. AU Gazizov, I.. AU Fadeeva, I.. PY 2014 IS 9 PB Kazan state agrarian University