RESPONSE OF MAIZE TO TWO IRRIGATION SYSTEMS WITH DIFFERENT NITROGEN LEVELS

Abstract

Abstract:- The experiment was conducted during autumn 2012 in one of fields Farm extension in west of Hilla center in Babylon, to investigate the role of different levels nitrogen (N0, N50 , N100 and N150)Kg/ha in plant Maize efficiency under irrigation systems ( I1: Drip and I2: Surface), A split plot arrangement in randomized complete block design with three replication was design used . The main plots were nitrogen levels and Sub plots were irrigation systems , The treatment (N150) was superior in leaf area (583.2cm2), Biological yield (32.91 tan/ha) , weight 500 grain ( 154.5gm ) and grains yield ( 11.64 Tan / ha ) , Per. of protein(10.3%) and water use efficiency (2.695 kg/m3). The treatment ( I2 ) was superior in root length(33.58 cm) and grain yield (9.75 tan/ha) , So the treatment (I1) was superior in weight 500 grain(148.1 gm) , percentage of protein (9.2 % ) and water use efficiency (2.737 kg/m3). A linear relationship was found between studied traits and both nitrogen levels and irrigation systems , The interaction (N150 × I2) was superior in leaf area ( 601.2cm2 ), Biological yield (34.57 tan/ha) , weight 500 grain ( 156.5gm ) and grains yield ( 12.03 Tan / ha ) , The interaction (N150 × I1) was superior in Per. of protein(11.5%) .