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 PB Krasnoyarsk State Agrarian University