TY JOUR TI THE INFLUENCE OF A SOIL TILLAGE METHOD ON THE BIOLOGICAL ACTIVITY DURING THE SPRING BARLEY CULTIVATION IN THE ROTATION WITH CLEAN OR GREEN FALLOW KW barley KW tillage KW soil KW microorganisms KW fungi KW bacteria KW actinomycetes JO Bulletin Samara State Agricultural Academy AU Markovskaya, G.K. AU Chugunova, O.A. PY 2018 IS 3 PB Samara State Agricultural Academy