TY JOUR TI MINIMIZING SOIL CULTIVATION INFLUENCE FOR FERTILITY STATUS OF HEAVY LOAMY SOILS IN SPRING AND WINTER WHEAT SEEDING KW microorganisms KW micromycetes KW bacteria KW actinomycetes JO Bulletin Samara State Agricultural Academy AU Melnikova, N.A. AU Nechaeva, E.H. AU Redin, D.V. PY 2016 IS 1 PB Samara State Agrarian University