Abstract The field experiment was carried out in the experimental of Ibn Al-Bitar Preparatory Vocational School Al-Hussainiya District-Holy Karbala governorate during spring season 2021, with aim evaluating performance six maize genotypes (5018, Bahouth 106, Al-Maha, Fajr 1, Al-Furat and Sarah) under effect four levels fertilization (160 N kg.ha -1 , 160 humic acid, 320 kg. ha acid) using split...