Improvement and Evaluation of Slide Irrigation Design in the Northern Delta Clay Soils

Khalifa, Ramy; Saied, Mahmoud; Khalifa, Mohamed

doi:10.21608/ejss.2018.2632.1154

Improvement and Evaluation of Slide Irrigation Design in the Northern Delta Clay Soils

Document Type : Original Article

Authors

¹ Soils Department -Faculty of Agriculture Damietta University -Damietta --Egypt

² Soils, Water and Environment Res. Inst., Agric. Res. Center, Egypt.

³ Soils and Water Dept. Fac. Of Agric., kafr Elsheikh Univ.

10.21608/ejss.2018.2632.1154

Abstract

A field study was conducted in clay soil at Sakha farm, Kafr EL-Sheikh governorate in 2013/2014 and 2014/2015 growing seasons. The objective of this work is to evaluate the effect of level border irrigation system using (100m length and 7m width and 0.1% slope) under different irrigation water discharge (2.5, 3.5 and 4 L sec-1 m-1) and cut-off irrigation (100, 90 and 85% of border length) on the infiltration characteristics, intake family and some irrigation parameters under post irrigation of wheat crop. The most important results include that, the irrigation at 4L/sec./m greatly affected the basic infiltration rate and cumulative infiltrated depth. Intake rates were decreased under water discharge and cut-off irrigation conditions in both seasons. The irrigation discharge at 4L/sec./m combined with cut-off at 85% of border length, the designed inflow time, deep percolation and run-off values were decreased, while water application efficiency was increased. The design ratio of inflow time to advance time is more than 2, meanwhile, the application time increased over the advance time, in this case the design is acceptable in clay soil. The measured irrigation stream was more than the design one, this caused increasing the amount of water applied. The design advance, recession and opportunity intake time were more than the measured one. It can be concluded that the design of border irrigation under different irrigation discharge and cut-off irrigation is reasonably efficient and values of different parameters fall within all the design limitations.

Keywords