TY JOUR TI INFLUENCE OF HUMIC ACID (HEMO BLES) ON PLANTS’ GROWTH OF TOMATO (LYCOPERSICON ESCULENTUM) KW tomato KW humic acid KW plant growth regulators KW sheltered soil JO Vestnik of Kazan State Agrarian University AU Suliman, A.A. AU Abramov, A.G. AU Shalamova, A.A. PY 2020 IS 14 PB Kazan state agrarian University