%0 Journal Article %T FORMATION OF A SYMBIOTIC APPARATUS OF ALFALFA DEPENDING ON THE NITROGEN NUTRITION TYPE %A Kozyreva, M.Y. %A Basieva, L.Z. %K alfalfa (Medicago varia Mart.), symbiotic apparatus, nitrogen fixation, biological nitrogen, mineral nitrogen, mass of nodules %J Vestnik of Kazan State Agrarian University %D 2020 %N 15 %P 6 %I Kazan state agrarian University