Comparative Performance Assessment of Two Small Scale Irrigation Scheme in West Harerghe, Oromia Regional State, Ethiopia

摘要

This research was focused on assessing and comparing the performance of two small scale irrigation schemes: Homacho sogido and Jawis irrigation in west hararghe zone by using comparative indicator. Based on the collected data four (4) comparative indicator from the nine indicators indicated by IWMI's were selected for this study. The indicators used are output per cropped area, output per command area, and output per irrigation diverted, output per water consumed. The collected data are total yields, farm gate prices of irrigated crops, area irrigated per crop per season, crop types, production per season or per year, cropping pattern. The major crops grown in both schemes are Chat, Cabbage, Sorghum, Maize, Tomato, Soybean and Onion. The result of the analysis express that four agricultural indicators; output per cropped area, output per command area, output per water consumed and output per unit water supply are in the order of 16843.4 birr/ha, 19730.86 birr/ha, 2.23 birr/m~3, 4.24birr/m~3 and 24304.5birr/ha, 38692.8 birr/ha, 3.29birr/m~3 and 4.28birr/m~3 for Jawis and Homacho sogido irrigation scheme, respectively. Excessive annual irrigation water was supplied by farmer in both scheme due to lack of knowledge on balancing crop water requirement and water diversion. This can be improved through training of farmer to balance crop water demand and water diversion. Homacho irrigation scheme could be benchmarked in the zone for water productivity and land productivity.