الفهرس 
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Abstract
study the effect of different irrigation, tillage and organic matter practices on growth, yield and the yield components of maize crop and it is water relations. The main results obtained can be summarized as follows: 1 Tillage treatment (30cm) resulted in highly significant effect on grain yield and straw yield on the other hand this deep tillage practice had no significant effect on ear length, ear diagonal, ear height on the plant, number of rows/ear, 100 grain weight (g), Shelling (%) for maize crop. 2 Tillage treatment (10cm) resulted in increasing the total protein and total nitrogen of the grain 3 The results revealed that the deep tillage practices decrease the bulk density of the soils. 4 The results showed that the bulk density decreased with the application of organic matter. 5The results showed that the soil porosity increased with increasing the amount of the organic matter. 6 The addition of the organic mater resulted in increasing maize grain yields, Nitrogen and protein contents of the grain. 7 The results demonstrate clearly that, irrigation regime at 60% leads to significant increases in nitrogen and protein content. 8 This studies showed that the different irrigation regime treatments lead to increasing the bulk density and it is related soil characters. 9 The studies cleared that irrigation regime treatments lead to increasing the soil porosity. 10 The results demonstrated clearly that, there is significant interaction between the tillage and organic matter where this interaction viewed in plant height, Nitrogen and protein contents of the grain, and straw yield in both the two growing seasons and appeared on grain yield in season 2002. 11 The results demonstrate clearly that, there is significant interaction between the tillage and irrigation regime where this interaction viewed in plant height in both two seasons and ear diagonal in 2001 season and grain yield in 2002 season. 12 This study concluded that the best combination treatment was the tillage depth 30 cm with the addition of organic matter (20m3/fad) and the irrigation regime 20% S.M.D.