Performance Evaluation of Drip Irrigation System for Green Pepper (Capsicum annum, L.) Production in the Tamale Metropolis of Ghana

Rose Alegewe; Shaibu Abdul-Ganiyu; Christopher Amigangre Ayambire

doi:10.47762/2023.964x.123

Rose Alegewe Kalpohin Senior High School, P. O. Box 137, Tamale, Ghana
Shaibu Abdul-Ganiyu Department of Agricultural Engineering, University of Development Studies, Tamale Ghana
Christopher Amigangre Ayambire Department of Agricultural mechanization and Irrigation Technology, University for Development Studies, Tamale, Ghana

DOI: https://doi.org/10.47762/2023.964x.123

Keywords: Performance evaluation, Drip irrigation, Emitter discharge, Application efficiency

Abstract

Performance evaluation is a diagnostic tool used to identify problem areas in an irrigation system and to indicate where improvements can be made in an existing irrigation system. Performance evaluation enables irrigation managers to redesign, improve upon the design and the irrigation strategies used. This study was carried out to assess the performance of a drip irrigation system installed and managed by Motor-King Company Limited in the Tamale Metropolis. The drip irrigation system consisted of two (2) reservoirs; 1500 litres and 1000 litres polytanks mounted at 1.2 m and 3.6 m high respectively. The drip irrigation system had a 32 mm main line and 16 mm lateral line with 2.7 l/h emitters spaced at 0.3 m. Three (3) laterals and nine (9) emitters were randomly selected in each plot. Emitter discharge was measured using catch cans. Five (5) performance indicators such as emitter flow variation, co-efficient of emitter flow variation, application efficiency, distribution uniformity and statistical uniformity were assessed. From the results, co-efficient of variation (7%) was rated good, emitter flow variation (18%) was rated acceptable, application efficiency was excellent (97.0%), low quarter distribution uniformity was good (87.2%), statistical uniformity was excellent (93.0%). These results imply that the drip irrigation performed satisfactorily and can still be used to produce vegetables with minimal losses.

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