TY JOUR TI PECULIARITIES OF SPRING DURUM WHEAT VARIETIES IN FORMING LEAVES AREA DEPENDING ON DIFFERENT TILLAGE EXPEDIENTS UNDER CONDITIONS KW variety KW spring durum wheat KW 2 upper leaves area KW tillage expedients. JO Vestnik of Kazan State Agrarian University AU Besaliev, I.N. AU Churbakova, S.M. AU Mukhitov, L.. AU Samuilov, F.. PY 2018 IS 13 PB Kazan state agrarian University