TY JOUR TI THE USE OF BIOFERTILIZERS AND GROWTH REGULATORS IN THE CULTIVATION OF SPRING WHEAT VARIETIES KW yield KW maintenance KW removal KW production KW composition KW soil JO Vestnik of Omsk SAU AU BOBRENKO, I.A. AU POPOVA, V.I. AU KORMIN, V.P. AU CHERNYAVSKAYA, M.A. PY 2025 IS 60 PB FSBEI HE Omsk SAU