TY JOUR TI THE INCREASE OF FIELD FEED PRODUCTION EFFICIENCY IN THE SUB-TOTAL OF THE OMSK REGION KW fodder beans KW crop rotation KW predeces-sor KW crop yields KW green mass KW subtaiga zone JO Bulletin of KSAU AU Bankrutenko, A.V. AU Yudina, E.V. PY 2018 IS PB Krasnoyarsk State Agrarian University