TY JOUR TI SYNERGISTIC EFFECT OF COMBINED USE OF ENDOPHYTIC BACTERIA AND HUMIC BIOSTIMULANTS ON SPRING BARLEY PRODUCTIVITY KW humic preparations KW spring barley (Hordeum vulgare) KW endophytic bacteria KW growth stimulants. JO Agrobiotechnologies and digital farming AU Medvedev, N.A. AU Safin, R.I. AU Valiev, A.R. PY 2025 IS 4 PB Kazan state agrarian University