TY JOUR TI Effect of Zero herbicide and methods of autumn tillage on yield and formation of the photosynthetic apparatus of oil flax varieties KW oilseed flax KW variety KW Severnyy KW VNIIMK 620 KW autumn tillage KW Zero herbicide KW yield KW leaf area KW photosynthetic potential KW net photosynthesis productivity. JO Agrarian Bulletin of the AU Goreeva, V.N. AU Galiev, R.R. AU Korepanova, E.V. AU Fatykhov, I.S. PY 2020 IS 194 PB Ural State Agrarian University