TY JOUR TI INVESTIGATION OF THE EFFECTIVENESS OF MINERAL FERTILIZER WITH TRACE ELEMENTS OF BIOCHAR-AGRO TECHNICAL GRADE ON SPRING RAPESEED KW spring rape KW mineral fertilizers KW trace elements KW field germination KW clogging KW branching KW yield JO Agrobiotechnologies and digital farming AU Suleymanov, S.R. AU Safiollin, F.N. AU Suleymanov, R.R. AU Motovalov, I.F. PY 2024 IS 3 PB Kazan state agrarian University