Abstract
Optimizing the use of irrigation water is of vital importance in conserving land and water resources as well as maximizing crop yield utilizing available water. Evaluating an irrigation system performance should measure and show the effectiveness of existing irrigation practice, provide remedial measures if necessary, as well as determining the impacts of the factors which affect the performance parameters. This study attempted to evaluate and assess the performance of Quashni irrigation scheme using internal and external performance indicators. Two irrigation seasons in the 2018 (February–May) and 2018/2019 (October–January) were carried out. Primary data, e.g. soil moisture before and after irrigation, discharge measurements, irrigation depth and soil physical properties, were collected. Secondary data, e.g. meteorological data and irrigated area per crops, were also collected. CROPWAT 8.0 computer model was used to calculate the CWR. The conveyance and application efficiency of the scheme was estimated as 71.8% and 51.2% respectively, which led to an overall scheme efficiency of 36.8%. RWS and RIS of the scheme were 1.24 and 1.12, respectively. Irrigation ratio of Quashni irrigation scheme was found to be 0.84, which implies that 16% of the command area could not be provided with irrigation coverage. In general, the evaluation and assessment indicated a low performance of the Quashni irrigation scheme.
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Acknowledgments
The author would like to provide her maximum respect and heartfelt thanks to, Dr. Mamaru Moges and Dr. Seifu. Tilahun for their outstanding advisor ship from the initiation of this work to end, as friend and colleague by offering constructive comments end by end continuously without tiresome. We would like to extend our gratitude to staffs in the soil laboratory of Amhara Design and Supervision works Enterprise, all data collectors, farmers in Gayita kebele, all colleagues and friends who contributed for the success of this project. The authors also would like to acknowledge the Ethiopian Road Authority (ERA) and the Ministry of Education of Ethiopia (MOE) for the grant rendered for this project and opportunity given to me.
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Aseres, M., Moges, M.A., Tilahun, S., Geremew, B., Geletaw, D., Bekele, E. (2020). Performance Evaluation and Assessment of Quashni Small Scale Irrigation Scheme, in Amhara Region. In: Habtu, N., Ayele, D., Fanta, S., Admasu, B., Bitew, M. (eds) Advances of Science and Technology. ICAST 2019. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 308. Springer, Cham. https://doi.org/10.1007/978-3-030-43690-2_10
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DOI: https://doi.org/10.1007/978-3-030-43690-2_10
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