الفهرس 
المقدمهOnly 14 pages are availabe for public view
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Abstract
Salinity of agricultural land is a major problem in many countries of the world. The problem is particularly severe where land is irrigated with poor quality water, and J. s
exacerbated by the arid c limates found in these areas, where
high rates of evaporation and transpiration can readily lead to excess salt accumulation. It is likely that about one third of all irrigated land is more or less seriously affected by
salinity and associated hazards such as alkalinity and
waterlogging. Egypt is one of the worst affected countries in
Africa especially in North Delta and in some other areas cross
the country (Omar, 1986), and the problem is increasing.
Soil salinity and nitrogen as an essential plant nutrient are factors which amongst others, have a great effect on
productivity. Information about these two factors is very important in adaptation of wheat crop plants to salinity and
in predication of yield in salt affected soil. Wheat is one of
the main field crops in Egypt and it is the most important grain crop in the world. Therefore, the main objective of this work aimed to study the performance of wheat crop under saline condition and also to find the most suitable rate of nitroge fertilizer f o r producing the bes t yie lds of wheat under salinity co ndition.