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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/731

Title: Evaluation of sprinkler irrigation system for improved maize seed production for farmers in Ghana
Authors: Boakye Osei, Frank Kwaku
Issue Date: 9-Aug-2009
Abstract: Irrigation is the greatest user of water in Ghana, but diminishing water resources, requires that efficient and effective methods of water application in irrigation is adopted to realise maximum returns and conserve water resources while eliminating the leaching of plant nutrients and possible pollution of other groundwater resources. In order to obtain commensurate yields for a given land area, uniform water application is paramount. This is only achievable through effective design, maintenance and management of irrigation systems. Consequently, an existing movable solid-set irrigation system was evaluated to ascertain the major measures of performance with the view to ensuring the application of water in an efficient and uniform manner. The suitability of the irrigation system for the existing soil parameters was also investigated. In this study, field (outdoor) tests/evaluations were performed for both single-sprinkler and block irrigation configurations, based on the American Society of Agricultural and Biological Engineers standards. Results indicated that the average Christiansen’s coefficient of uniformity (CU) for the 12m×12m and 18m×18m sprinkler spacings were 91% and 87% respectively. The mean application rates for the 12m×12m and 18m×18m spacing were 10.4mm/h and 4.7mm/h respectively and the average soil infiltration rates observed was 28.5mm/h. The pattern efficiencies of the 12m×12m and 18m×18m spacing were 86.1% and 82.8% respectively. The sprinklers had an average discharge of 1.5m3/h and average discharge efficiency of 83.2% under the prevailing operating and environmental conditions for this study. The results of the study indicated that the sprinkler irrigation system as designed was suitable for the soil at the study site and its performance was satisfactory under the existing environmental conditions.
Description: A Thesis submitted to the Department of Agricultural Engineering, Kwame Nkrumah University of Science and Technology, Kumasi in partial fulfillment of the requirements for the degree of Master of Science in soil and water engineering,2009
URI: http://hdl.handle.net/123456789/731
Appears in Collections:College of Engineering

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