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| Registros recuperados: 44 | |
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| Kikuchi, Masao; Weligamage, Parakrama; Barker, Randolph; Samad, Madar; Kono, Hiroichi; Somaratne, H.M.. |
| The use of shallow wells, equipped with small pumps, to lift groundwater has spread rapidly in many agricultural regions of tropical monsoonal Asia. In Sri Lanka, the rapid and pervasive invasion of agro-wells and pumps drew the attention of policymakers and researchers, but many questions were left unanswered due to lack of research in the area. This study aims to fill this gap in knowledge, based on observations and data obtained in field surveys conducted in major and minor irrigation schemes in the dry zone of Sri Lanka. This report gives the key findings of this study into the pattern, extent and causes of the spread and use of agro-wells and pumps in traditional villages and irrigated settlement schemes. It investigates farmer investments in... |
| Tipo: Report |
Palavras-chave: Wells; Construction technology; Pumps; Arid zones; Investment; Irrigation systems; Irrigation programs; Rice; Estimation; Agribusiness; Agricultural Finance; Crop Production/Industries; Financial Economics; Marketing; Public Economics. |
| Ano: 2003 |
URL: http://purl.umn.edu/44558 |
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| Espinosa Espinosa, Bartolomé. |
| El uso óptimo y sostenible de los recursos hídricos disponibles para riego requiere que las instalaciones usadas para irrigar permitan administrar el agua con las estrategias de manejo adecuadas a cada situación. Este aspecto, al que en ocasiones no se le ha dado suficiente importancia, resulta hoy en día absolutamente imprescindible si se quieren rentabilizar las inversiones requeridas en infraestructura, estando condicionado por los cultivos que se adopten en la zona regable, así como por la evolución de las políticas y mercados agrícolas. Por ello, el presente estudio tuvo como objetivo realizar un análisis técnico y económico del diseño de un sistema de riego a hidrante parcelario empleando dos métodos de diseño, el método por Turnos y el método de... |
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Palavras-chave: Evaluación; Métodos de diseño; Sistemas de riego; Evaluation; Design methods; Irrigation systems; Hidrociencias; Maestría. |
| Ano: 2014 |
URL: http://hdl.handle.net/10521/2284 |
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| International Water Management Institute (IWMI). |
| China and India face similar challenges in managing their irrigation economies. Both are developing nations with large agricultural populations, high population densities and a high proportion of agriculture under irrigation. Both are facing challenges in financing existing irrigation systems in the face of broader economic reforms. And in both countries, groundwater provides a particular challenge since it is a major source of irrigation, but with accelerating declines in both quantity and quality. Problems in financing surface irrigation systems, worries about continued groundwater table declines along with cost implications for both farmers and the energy industry, and a range of other issues have raised serious concerns over the future sustainability... |
| Tipo: Report |
Palavras-chave: Irrigation systems; Groundwater irrigation; Energy; Cost recovery; Resource /Energy Economics and Policy. |
| Ano: 2006 |
URL: http://purl.umn.edu/113015 |
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| Registros recuperados: 44 | |
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