Īsres SB (2016) Evaluating and enhancing irrigation water management in the upper Blue Nile basin, Ethiopia: The case of Koga large scale irrigation scheme. Īmer AM, Amer KH (2010) Surface irrigation management in relation to water infiltration and distribution in soils. FAO, Rome, 300, D05109Īmede T (2015) Technical and institutional attributes constraining the performance of small-scale irrigation in Ethiopia. Turk J Agric for 31:11–22Īllen RG, Pereira LS, Raes D, Smith M (1998) Crop evapotranspiration-Guidelines for computing crop water requirements-FAO Irrigation and drainage paper 56. Īkkuzu E, Ünal HB, Karataş BS (2007) Determination of water conveyance loss in the Menemen open canal irrigation network. In addition, adoption of water-saving practices such as deficit irrigation, surge and cutoff application should be conducted to improving the application efficiency and frequent maintenance of water conveyance system can enhance the conveyance efficiency of the scheme.Īdela FA, Aurbacher J, Abebe GK (2019) Small-scale irrigation scheme governance - poverty nexus: evidence from Ethiopia. Performance indicators showed that the scheme was in need of intensive management and infrastructural improvement to enhance productivity and sustainability of the scheme. The value of water performance indicators relative water supply, relative irrigation supply and water delivery capacity of the scheme were 0.992, 0.99 and 0.62, respectively. The value of output per unit irrigation supply and output per unit water consumed were found to be 0.38US$/m 3 and 0.28US$/m 3, respectively.
The comparative performance of the Tilku Fetam irrigation scheme was also carried out and the output per cropped area and output per command area were found to be 1321.45 US$/ha and 726.8US$/ha, respectively. The results indicated that the average conveyance efficiency of main canals and secondary canals were 78.5% and 72%, respectively, and average application efficiency of the scheme was 44%.
The conveyance efficiency was evaluated at main and secondary canals and the application efficiency of the scheme was evaluated at head, middle and tail of the farmers’ field. The crop water requirement was estimated using CROPWAT 8.0 model. The secondary data included climate data, crops grown in the study area, total yield and cost of production. The primary data included soil moisture before and after irrigation, discharge measurement at main and secondary canals, and interview with beneficiaries about the scheme. To achieve the objective of this study both primary and secondary data were collected. The present study was aimed to evaluate the performance of Tilku Fetam small-scale irrigation scheme using internal and external indicators, which is found at Banja district, Awi zone, Ethiopia.
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