Abstract
The aim of this work was to compare the performance of sprinkler and subsurface trickle irrigation systems under treated sewage water increase of landscape conditions. Field experiments were conducted at Residential and Industrial Wastewater Treatment System located in the National Monitoring in Delta Barrage (El-Qanater), Cairo Egypt. Hybrid Bermuda grass was cultivated in two separate experimental locations; one was irrigated by treated sewage water and the other with Nile water. At each location three irrigation systems has been tested, which note (1) sprinkler irrigation system :a) rotary sprinkler heads and: b) spray sprinkler heads (2) subsurface trickle irrigation laterals with long path emitters and (3) irrigation with leaky pipes. Results indicated that, applying treated sewage water by subsurface trickle laterals was more safely used due to the lowest concentration of heavy metals in soil profile. The highest value of the volumetric soil moisture content (0.152 m3 of water / m3 of soil) was recorded by subsurface trickle irrigation system with long path emitters when the treated sewage water is applied. Also, using subsurface trickle systems saved about 11 % of total seasonal water applied comparing with sprinkler systems.
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