TY JOUR TI YIELDING CAPACITY FORMATION OF GRAIN AND LEGUMINOUS CROPS IN THE CONDITIONS OF THE TRANS-VOLGA FOREST-STEPPE FARMING KW bean KW cultural KW abiotic KW factors KW treatment KW soil KW fertilizers JO Bulletin Samara State Agricultural Academy AU Tojgildin, A.L. AU Morozov, V.I. AU Podsevalov, M.I. AU Hajrtdinova, N.A. PY 2017 IS 2 PB Samara State Agrarian University