الفهرس 
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Abstract
There is astrong interaction between water and plant nutrient availability,in some cases improved fertilizer supply can componsate for the effects of reduced soil moisture.Ahigh grain yield was associated with ahigh grain N content which resulted in agrain protein yield which was obtained with the splitting of N into serval doses was found.Therefore,the objective of the present investigation was to study the effect of irrigation schedule,N level and K fertilization in the presence and absence of Zn on wheat,yield and chemical composition of the plant.