TY JOUR TI INFLUENCE OF AGROMINERAL MICROFERTILIZING MIXTURE APPLICATION ON THE PRODUCTIVITY OF SUNFLOWER HYBRID KW sunflower KW hybrids KW agromineral KW micronutrient mixture JO Vestnik of Kazan State Agrarian University AU Potapov, D.V. AU Saniev, R.N. AU Vasin, V.G. AU Vasin, A.V. PY 2020 IS 14 PB Kazan state agrarian University