الفهرس 
3. Effect of varietal differences on growth characters, yield and its attributeOnly 14 pages are availabe for public view
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Abstract
Two field experiments were conducted at the Experimental Farm in Itay El-Baroud Agricultural Research Station, El Behaira Governorate,Agricultural Research Center (ARC);during 2011 and 2012 seasons to evaluate the performance of Egyptian Hybrid 1, Giza 178, Sakha 104 and Sakha 101 rice cultivars under different irrigation regimes i.e.; 6000, 4560 and 3840 m3/fad.. as irrigation every 4, 6 and 8 days, respectively and two tillage systems (conventional and zero tillage).
A split-split-plot design with three replications in the two seasons of study where; the main plot were designated for irrigation regimes, (equal dose of water (180 m3/fad..) was added every 4, 6 and 8 days) while; sub-plots were designated for the two tillage systems and sub-sub-plots were designated for rice four cultivars (Hybrid 1, Giza 178, Sakha 104 and Sakha 101).
In case of, irrigation every 4 days the total amount of water used was 6000 m3/fad../season. Consequently, irrigation every 6 days consumes 4562 m3/fad./season while, every 8 days consumes 3844 m3/fad./season. These means that, 6000 m3 of water consumed in total rice plant duration equal 100% consequently, 4562 m3 equal 76% while, 3844 m3 equ 64%.