TY JOUR TI MEFOSPHON» USAGE FOR PRODUCTION USEFUL PRODUCTS INCREASING WHEAT YIELD KW productivity KW millet KW Mephosphon preparation KW healthy products KW chicken droppings KW grain quality JO Vestnik of Kazan State Agrarian University AU Sibagatullin, F.S. AU Haliullina, Z.M. AU Petrov, A.M. AU Sinyashin, K.O. AU Ganiev, A.S. PY 2020 IS 14 PB Kazan state agrarian University