کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8872860 1622874 2018 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Performance assessment of smallholder irrigation based on an energy-water-yield nexus approach
ترجمه فارسی عنوان
ارزیابی عملکرد آبیاری مالداری براساس رویکرد رابطه انرژی-آب-سودآوری
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم زراعت و اصلاح نباتات
چکیده انگلیسی
Micro irrigation has been claimed to be the world's most valued irrigation innovation. However, both its potential to save water and its adaptability to smallholders' needs are being questioned, while its energy requirement implies financial and environmental costs that are not affordable everywhere. This paper contributes to this debate with a field performance assessment of smallholder micro irrigation systems in the Baixo Acaraú Irrigation District, Ceará, Brazil, and a novel analysis model that depicts the energy-water-yield nexus by linking irrigation performance with energy efficiency and yield gap. Irrigation system performance was evaluated in a sample of 40 family lots and compared to design performance in a fairly homogeneous subset of them. Pumping inefficiency and inappropriate filtering have been at the root of system deficiencies. The great variability of irrigation performance indicated a wide margin for improvement and the possibility of using prominent farmers as benchmarks. Although there has been “technology translation” in the irrigation district that included local innovation in the filtering system, the process has not been completed. It is concluded that the adoption of foreign irrigation technology could be accelerated with the collaboration between local innovators and publicly-supported irrigation advisory services using integrated performance assessment approaches like the one presented here.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Agricultural Water Management - Volume 206, 30 July 2018, Pages 176-186
نویسندگان
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