TY JOUR TI THE FIELD CROP ROTATIONS FORMATION FEATURES FOR ORGANIC FARMING IN THE WESTERN SIBERIA FOREST-STEPPE CONDITIONS KW grain-fallow crop rotation KW predecessor KW organic farming KW growth and development conditions KW grain yield JO Bulletin of KSAU AU Chibis, V.V. PY 2022 IS 0 PB Krasnoyarsk State Agrarian University