Nieven O. Fathi and M. A. Shama( 2010). Yield response of corn to supplemental irrigation with well water and nitrogen fertilization in a semi-arid environmentMINOFIYA J. Agric. Res. Vol.35 No. 5: 1897 – 1910 (2010)
Abstract: A greenhouse experiment was conducted at the Soil Salinity and Alkalinity Laboratory at Alexandria during the growing season (May-September) 2007 year. Corn plants (Zea mays c.v. Single hybride 10) was grown in cemented basin (0.75m x 1m), filled with clay loam soil to evaluate the effect of supplemental irrigation with well water in interaction with N supply on the grain and stover yields of corn plants. The results indicated that grain and stover yields were significantly increased (P ≤ 0.05) with increasing application rate of N fertilizer at all treatments of irrigation. Grain and stover yields of corn plants were decreased significantly (P ≤ 0.05) with the increasing number of well water irrigation times. The polynomial quadratic model accurately described the relationship between the grain and stover yields of corn plants grown on N-treated soils irrigated with different irrigation water types. The maximum nitrogen use efficiency (NUE) for grain yield (66.65 kg . kg-1 N) was observed with a 72 kg N.ha-1 and tap water-irrigated basins. In contrast, the minimum NUE for grain yield (20.83 kg. kg-1 N) was observed with a 288kg N.ha-1 and 6 times well water-irrigated basins. However, the maximum NUE for stover yield (183.28 kg. kg-1 N) was observed with a 72 kg N.ha-1 and tap water-irrigated basins. In contrast, the minimum NUE for stover yield (35.35 kg. kg-1 N) was observed with a 288kg N.ha-1 and 6 times well water-irrigated basins. It is further suggested that a more detailed experiment be carried out to realize the potential of different irrigation water types as a source of irrigation
Keywords: (Well water, Corn Yield, N-Use Efficiency)
