الفهرس 
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Abstract
A field experiment was carried out at the Experimental Farm, Faculty of Agriculture, El-Minia University, A.R. of Egypt.
The aim of this work was to study the optimum N and P fertilization levels for producing the greatest grain yield from unit area and subsequently the interelationship between fertilization levels and seeding rates of wheat.
A split plot design with sex replications was applied. Seeding rates were arranged randomly in the main plots, while the combinations of N and P were allocated randomly in the sub-plots.