TY JOUR TI DETERMINATION OF THE DISPERSITY OF SPRAYING THE WORKING SOLUTION OF A BIOLOGICAL PREPARATION KW sprayer of the working solution of the biological product KW biological product KW microorganisms KW preparation of seed material KW etching JO Vestnik of Kazan State Agrarian University AU Sabirov, R.F. AU Valiev, A.R. AU Mukhamadiarov, F.F. PY 2022 IS 17 PB Kazan state agrarian University