TY JOUR TI ASSESSMENT OF THE BIOLOGICAL PROPERTIES OF SUBZOLIZED CHERNOZEM WHEN USING GREEN MANURE IN A FIELD CROP ROTATION KW green manure crops KW microbiological activity KW earthworms KW yield JO INTERNATIONAL AGRICULTURAL JOURNAL AU Chulkov, V.A. AU Chulkova, V.V. AU Malanichev, S.A. AU Saparklycheva, S.E. AU Ivanova, M.S. PY 2026 IS 8 PB Electronic science