%0 Journal Article %T STRENGTHENING OF A BIOLOGICAL FACTOR IN MIXED COENOSES BY LUPIN USE %A Ruckaya, V.I. %A Sorokin, A.E. %A Isaeva, E.I. %K mixed crops, lupin, oat, Sudan grass, biological factor, aggression coefficient, competitiveness ratio %J Adaptive Fodder Production %D 2019 %N 2019 %P 6 %I Federal Williams Research Center of Forage Production and Agroecology