Determination of irrigation performance of water user associations in the vicinity of Sarigol and Alasehir using remote sensing techniques
Makaleler > Tam Makale · 2007
Yazarlar: Bekir Sitki KARATAS, Erhan AKKUZU, Musa AVCI
TURKISH JOURNAL OF AGRICULTURE AND FORESTRY, SCI Expanded İndekslerine Giren Dergi, Uluslararası, 2007, cilt 31, ss 287-296
DOI: 10.3906/tar-0703-16
Özet
The aim of this research was to determine the irrigation performance of Sarigol, Bag, and Uzum Water User Associations (WUAs) in the vicinity of Sarigol and Alasehir using remote sensing techniques. For this purpose, the performance of the irrigation system for the 2004 irrigation season (May to September) was determined according to 5 indicators, namely overall consumed ratio (ep), relative water supply (RWS), depleted fraction (DF), crop water deficit (CWD), and relative evapotranspiration (RET). Potential and actual evapotranspiration parameters used in determining these indicators were estimated according to the SEBAL (Surface Energy Balance) method using NOAA-16/AVHRR images. Seasonal averages of Sarigol, Bag, and Uzum WUAs calculated from the results were, respectively, 0.82, 0.88, and 1.26 for ep; 1.21, 1.13, and 0.94 for RWS; 0.53, 0.59, and 0.68 for DF; 45.61, 42.44, and 45.81 mm month-1 for CWD; and 0.64, 0.67, and 0.64 for RET. According to the seasonal average values of all the performance indicators, the irrigation performance of all WUAs was usually poor, and only the depleted fraction indicator for Uzum WUA was within the range of acceptability. Thus, performance indicators showed that less irrigation water was supplied to WUAs than was needed.