TY JOUR TI Development of technology elements for the cultivation of rare species of perennial onions in the Central Urals KW perennial onions KW Allium fistulosum KW Allium nutans KW Állium schoenoprásum KW Allium odorum KW Allium ledebourianum KW feeding area JO Agrarian Bulletin of the AU Karpuhin, M.Y. AU Tymchenko, L.N. PY 2023 IS 23 PB Ural State Agrarian University