Evaluation of Irrigation Uniformity and Equity Under Center Pivot Using Remote Sensing | ||||
| Scientific Journal of Agricultural Sciences | ||||
| Volume 5, Issue 4, December 2023, Page 105-116 PDF (1.74 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/sjas.2023.242150.1347 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Essam Mohamed Baioumy  1; Mohammed Ahmed el-shirbeny2; Mohamed yussef el-ansary3; Montaser abdallah Awad4
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| 1agricultural application department, NARSS | ||||
| 2Prof. of Ag. Eng., Ag. App. Dept., NARSS, Egypt. | ||||
| 3Prof., of Ag. Eng., Ag. Eng. Dept., Fac. of Ag., Benha U., Egypt. | ||||
| 4Assoc., Prof. of Ag. Eng., Ag. Eng. Dept., Fac. of Ag., Benha U., Egypt. | ||||
| Abstract | ||||
| Due to fresh water being rare, especially in the arid regions, the need to produce more food, and facing the climate change effects on agricultural production, so, enhancing irrigation systems and raising their efficiency become urgent necessity. The good evaluation of irrigation systems leads to better water management and sustainable agricultural development. This study proposed a framework for evaluating the center pivot irrigation systems based on remotely sensed data and field measurements. Irrigation uniformity distribution (CU and DUlq) were assessed from field data using catch cans method. Irrigation equity was evaluated by estimating actual evapotranspiration (ETa) based on the triangle method from satellite data. The spatial variation of ETa was assessed from the coefficient of variation (CV), and ETa maps were produced for better interpretation. Irrigation equity assessed at different two scales, the whole cultivated area and different placements of the center pivot irrigation system. The results showed that the irrigation system water distribution uniformity was “poor” as the CU value was between 70%-79% and the DUlq was 61%. The results also indicated the absence of irrigation equity (i.e., fairness of irrigation distribution) especially in the early and late stages of the crop life cycle, as the STDV of ETa and the CV values were high during the monitoring dates. Also the irrigation equity did not exist along the center pivot irrigation system radius at different 4 placement of irrigation. | ||||
| Keywords | ||||
| Remote sensing; Irrigation performance indicators; Uniformity; Adequacy | ||||
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