EFFECT OF NITROGEN FERTILIZERS ON GROWTH AND YIELD TRAITS OF MAIZE

A field experiment was carried out in the fields of college agricultural engineering sciences, university Baghdad during fall season 2021, order to find which cultivated genotypes maize are efficient under nitrogen fertilization. The applied according a RCBD (split plot design with three replications). (Baghdad, 5018 and Sarah) supplying levels fertilizer, N1 (100 kg/ha), N2 (200 kg/ha) N3 (300 results statistical analysis showed superiority cultivar Sarah trait number days until 50% silking, chlorophyll index, pods per plant, grains row seeds row, where their averages were 61 d, 590.27 mg/m2, 2.0 ear-1, 48.78 grains/row 818.07 ear-1 respectively, there no significant differences between traits rows ear, weight 100 total grain yield. increase fertilizer caused an increasing traits, especially at highest level N3, it gave average tasseling, silking 50%, ears grains, characteristic yield, 59 63.11 2.2 earbuds-1, 18.622 grains/row, 993.0 grains/ear, 31.78 g, 14. 88 tons/ha respectively.