Document Type : Original Article
Authors
1
Water and Irrigation System EngineeringDepartment, Faculty of Agricultural Engineering, Al-Azhar University, Egypt
2
Agricultural Engineering Department, Faculty of Agriculture, Cairo University, Egypt.
3
Geotechnical Engineering Construction Research Institute, Egypt.
Abstract
The Experimental included irrigation requirements, drainage depth and accumulated drainage that were carried out in three different locations (Lotas 1, Lotas 2 and Elkhaldia) at the Royal Park, Sheikh Zayed City, Giza, Egypt, which lies at latitude 30° 02' 18.8" N and longitude 31° 01' 42.5" E. To figure out the temporal changes of the Hourly and accumulated drainage depth over the three locations, the total applied irrigation was 17.95, 14.36, and 10.46 as irrigation amounts Lotas 1, Lotas 2, and Elkhaldia, respectively, and for sandy soil. The depth of drainage was mesurmat in each site for three consecutive days immediately after irrigation till reaching 20 hours after irrigation for the grass plant (Paspalum). The main results are: In Lotas 1, the drainage depth started to be very high immediately after irrigation by 51mm, then decreased significantly after irrigation reaching 1 mm after 20 hours on the first day. The accumulated drainage depth showed a clear rise across all three days, meaning three replicates of measurements from zero-time till reached 9 hours after irrigation by 96, 134 and 67 mm for repeated, (R1), (R2) and (R3) respectively in Lotas 2. and during the first 10 hours, the accumulated depth rose sharply to reach by127.5, 126, and 115 mm for (R1), (R2) and (R3) respectively in Elkhaldia. The percentage difference in the amount of drainage between the actual and the theoretically calculated using the Hooghoutd equations was 0.2, 1.1 and 1.8%, respectively.
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