TY JOUR TI APPLICATION OF GROWTH REGULATORS IN WINTER WHEAT CULTIVATION IN THE CONDITIONS OF FOREST-STEPPE OF MIDDLE VOLGA REGION KW winter KW wheat KW regulators KW growth KW grain KW yield JO Bulletin Samara State Agricultural Academy AU Koshelyaev, V.V. AU Kudin, S.M. AU Koshelyaeva, I.P. PY 2017 IS 2 PB Samara State Agrarian University