Physical Land Suitability Evaluation for Irrigation in the Lower Alwero River Area of Abobo, Western Ethiopia
American Journal of Agriculture and Forestry
Volume 5, Issue 3, May 2017, Pages: 60-64
Received: Aug. 3, 2013; Accepted: Jan. 10, 2017; Published: May 9, 2017
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Authors
Teshome Yitbarek, Department of Natural Resource Management, College of Agriculture and Natural Resource, Wolkite University, Wolkite, Ethiopa
Kibebew Kibret, School of Natural Resources and Environmental Science, College of Agriculture and Environmental Science, Haramaya University, Dire Dawa, Ethiopia
Shelem Beyene, Department of Plant and Horticultural Science, College of Agriculture, Hawassa University, Hawassa, Ethiopia
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Abstract
Land suitability assessment plays an important role in identifying biophysical constraints and evaluating potential capacity of land and its sustainable use. Physical land suitability evaluation for irrigation was carried out in the lower Alwero river area of Abobo, western Ethiopia, following FAO methodology for general irrigation farming. The irrigation suitability of five land mapping units (LMUs): 1Ac, 1Bc, 1Ecl, 2Cc and 3Ccl were assessed by considering slope, drainage, top soil texture, sub soil texture, surface stoniness, surface coarse fragments, subsurface coarse fragment, rockiness, depth to solid rock or hardpan, lime, gypsum, electrical conductivity (EC) and exchangeable sodium percentage (ESP). The result revealed that LMU 1Ac, 1Bc and 2Cc, with total area of 22,367.9 ha (83.7%), were moderately suitable (S2). The moderate limiting factors were drainage, top soil texture and subsoil texture. On the other hand, LMU 1Ec1, covering an area of 3,677.6 ha (13.8%) was not suitable (N) for irrigation due to subsurface coarse fragments and depth to solid rock or hardpan. For all LMUs, parameters like lime, gypsum, EC and ESP were not considered as limiting factors.
Keywords
Irrigation Suitability, Land Mapping Unit, Limiting Factor
To cite this article
Teshome Yitbarek, Kibebew Kibret, Shelem Beyene, Physical Land Suitability Evaluation for Irrigation in the Lower Alwero River Area of Abobo, Western Ethiopia, American Journal of Agriculture and Forestry. Vol. 5, No. 3, 2017, pp. 60-64. doi: 10.11648/j.ajaf.20170503.14
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