الفهرس 
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Abstract
Two field experimental were carried out during each of 1973/74, and 1975/76 seasons at mallawi agricultural experimental station to study the effect of irrigation levels, nitrogen fertilization rates and irrigation period on the plant characters, yield and its components, and quality characters of maxipak wheat variety.
The conditions affecting irrigation requirements and consumptive use have been discussed with illustrations of amounts of water used under various levels of irrigation.
The first experiment was conducted to study the effect of irrigation levels (quantity of irrigation water)and nitrogen fertilization rates. It consisted of 12 treatment combinations which resulted from 3 levels of irrigation and 4 rates of nitrogen fertilization.
The second experiment was conducted to study the effect of irrigation levels and irrigation periods(timing). it Consisted of 27 treatments which were the combination of the mentioned 3 irrigation levels and 7 irrigation periods.