Effect of different surface irrigation systems and organic fertilization on water productivity of maize yield.

Abstract This study aimed to assess the performance and effects of different surface irrigation systems, growth, yield maize crops in district Babil Iraq. Field experiments were conducted autumn 2020 manage five surfaces systems Besides, two intervals (5 8 days) levels organic fertilizers (humic acid) (0 OM0 20 OM1 kg ha -1 ). The experiment was a Split Block Design with three replications. results indicated that actual water consumption use (ETa) varied systems. ETa reached 688, 673 mm season for BSI treatment decreased 293, 275 APFIRB under 5 days OM0, treatments respectively. Organic fertilizer reduced amount by 4 2.5% compared control intervals, mean grain 7149.9 OM1, while humic acid application improved 7.95% OM0. Meanwhile no significant differences corn