Comparative study of some micro-irrigation systems under semi-arid regions [electronic resource].

Includes references.

Micro Irrigation Systems ( MIS ) means in the present work ,mini - sprinkler and drip irrigation systems. Both drip and mini sprinkler are low - volume, fairly low pressure and less energy consuming systems than conventional pressurized irrigation systems. The application of drip irrigation became the most favorite irrigation system in Egypt, while the usage of mini-sprinkler system is still limited . Therefore, this work aimed to study pattern, uniformity and distribution of soil moisture and salt in the wetted area to find out which system is more readable under semi-arid Rgion.In order to investigate such goal, 8 different treatments for both mini-sprinkler and drip irrigation, were tested (5 different distances, 8 irrigation timing, and 4 different irrigation discharge rates). The experiment was conducted in Kom Oshim farm, Cairo - Fayoum Desert Rood, 63 km away from Cairo, and the filed work was extended over 290 days approximately . Sandy loam soils was concluded in order to represent most desert soil in Egypt . The results showed that due to the irrigation water and the soil salinity, it is better to use mini- sprinkler irrigation system in Egyptian arid zones, However the use of drip irrigation system is better in the long run when the water quality is good.

Summary in Arabic.

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