TY JOUR TI STUDY OF CORN AGROCENOSES IN MIXED CROPS ON GRAY FOREST SOILS OF KAMA REGION OF THE REPUBLIC OF TATARSTAN KW corn (Zea mays) KW mixed crops KW plant height KW leaf area KW aboveground mass KW yield of green mass. JO Vestnik of Kazan State Agrarian University AU Mikhaylova, M.Y. AU Sharafieva, I.Z. AU Nizamov, R.M. AU Minikaev, R.V. AU Fashutdinov, F.S. PY 2024 IS 19 PB Kazan state agrarian University