Two field experiments were conducted at Sakha Agricultural Research Station, Kafr El-Sheikh Governorate, Egypt during the two successive seasons of 2007 and 2008. The objectives of this research were: (i) to study the effect of irrigation scheduling using three different pan evaporation coefficients on maize yield; (ii) to evaluate the growth, yield and N use efficiency of maize as affected by different rates of N fertilization. The treatments were arranged in a split plot design with four replicates. The main plots were assigned with three irrigation regimes I₁, I₂and I₃ irrigated at 1.2 ,1.0 and 0.8 of accumulation of A.P.E. Five nitrogen rates i.e. zero,60, 90,120 and 150 kg N fed.^{-1 in the sub plots namely N}₁, N₂, N₃ , N₄ and N₅ .  Results showed that 1.2 of A.P.E significantly increased grain yield by 5.4, 8.9% and straw yield by 5.7 , 11.3% compared to irrigation at 1.0, 0.8 of A.P.E. respectively. Also irrigation at 1.2 of A.P.E resulted in higher amount of irrigation water applied to be 3150 m³ /fed distributed on 7 irrigations , followed by irrigation at 1.0 to be 2830 m³ /fed distributed on 6 irrigations , and irrigation at 0.8 of A.P.E. was 2370 m³/fed distributed on 5 ones. The highest consumptive water used was obtained under irrigation with 1.2 pan evaporation coefficient i.e. 2386 m³ .while the lowest 1998 m³ obtained from irrigation at 0.8 of A.P.E.. Lower frequent irrigation due to irrigation at 0.8 of A.P.E. resulted in a significantly increased water productivity compared to the other two irrigation treatments it was 1.260, 1.903 and 1.957 kg/m³ for I₁, I₂ and I₃ respectively  Increasing nitrogen rates up to 150 kg N fed.^-1 (N₅ ) significantly increased  grain    and straw yield by 69 , 50 ; 11.9 ,22.5 ; 4.7 , 4.7 % as compared to N_{1 ;}   N₂ ;  N₃    treatments respectively but not significant with N₄ Nitrogen use efficiency (NUE) increased with decreasing water applied .It was 77.47 , 79.25 and 80.07 % for I₁ , I₂ , I₃,respectively , and decreased with increasing N rate; 88.1 ,85.7 , 77.4 and 64.5 for  N_{2 ;}  N₃ ;  N₄ and N₅ respectively. Therefore, to increase water productivity and to save irrigation water, it could be recommended to irrigate maize at 1.0 of A.P.E in middle north Nile Delta soils to save water of about 320 m³