The effect of water regime and fertilizer-N application rate and modality of application were studied in order to identify the most proper and effective combination of the above-studied variables that provides a satisfactory spinach yield and minimizes the use of chemical nitrogen fertilizers, to save the surrounding environment and to achieve good water saving. Water requirement and Nitrogen fertilizer are two factors notably affects the growth and yield of Spinach crop. So, any delay in irrigation, thinning or insufficient water supply and nitrogen fertilizer would negatively affect the...