Beyond irrigation efficiency |
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Authors: | Marvin E Jensen |
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Institution: | (1) 1207 Springwood Drive, Fort Collins, CO 80525-2850, USA |
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Abstract: | Parameters for accounting for water balance on irrigation projects have evolved over the past century. Development of the
classic term irrigation efficiency is summarized along with recent modifications such as effective irrigation efficiency. The need for terms that describe measurable water balance components of irrigated agriculture is very important, as demands
and competition for available renewable water supplies continue to increase with increasing populations. Examples of irrigation
efficiency studies conducted during the past few decades are summarized along with related irrigation terminology. Traditional
irrigation efficiency terminology has served a valid purpose for nearly a century in assisting engineers to design better
irrigation systems and assisting specialists to develop improved irrigation management practices. It still has utility for
engineers designing components of irrigation systems. However, newer irrigation-related terminology better describes the performance
and productivity of irrigated agriculture. On a river-basin level, improved terminology is needed to adequately describe how
well water resources are used within the basin. Brief suggestions for improving irrigation water management are presented. |
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