Movable Surface Irrigation System (MSIS) Impact on Spatial and Temporal Distribution of Soil Moisture and salinity

Movable surface irrigation system (MSIS), was carried out by modification of center pivot irrigation system and depends on replacing the sprayers by polyethylene hoses ending by nozzles. Field experiments were conducted at farm on Alex-Cairo desert road, to assess moving surface irrigation system at 2012 year. The main aims of this research are to study spatial and temporal moisture and salinity distribution patterns under (MSIS), the modification of pivot irrigation system to be more suitable to irrigate some trees, and other high crops under special conditions, to evaluate the modification system and to reduce the investment costs of the modified system. Results show that, operating the (MSIS)at low pressure head (1.5 bar), water amount was saved by (16.8%)(Abdel-Rahman, 2005), the uniformity coefficient was 90.75%, beside, the movable surface system reduced the hazard of chemigation. Finally, High efficiency of applied water distribution, reduce deep- percolation, reducing runoff and having good management without exceed water irrigation by using (MSIS).