Author: Charles L. Abernethy
Publisher: IWMI
ISBN: 929090397X
Category : Associations, institutions, etc
Languages : en
Pages : 45
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Book Description
This report deals with some experiences of a set of irrigation systems situated in the Republic of Niger, along both banks of the Niger River. All these systems draw water from the river through low-lift, electrically powered pumping stations, which have been installed by the Government of Niger over the past 30 years. Irrigation of this kind is not a tradition in Niger. The introduction of this technology caused considerable changes in the way of life of local communities.
Author: Wilfried Hundertmark
Publisher: IWMI
ISBN: 9290905298
Category : Rice
Languages : en
Pages : 57
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Book Description
The paper presents a framework for water use in rice-based irrigation systems, which is based on linear programming (LP). This framework intends to facilitate improved understanding of a system's internal and external conditions and the constraints to productive use of the available land and water resources, and thereby create a reference for the assessment of the physical, economic and environmental performance of a given system. The framework is conceived as a tool that is used interactively in technical group sessions with farmers, system operators and extension workers, where structured discussions lead to improved data confidence, and understanding of complex irrigation systems.
Author: F. W. T. Penning de Vries
Publisher: IWMI
ISBN: 9290906146
Category : Irrigation
Languages : en
Pages : 76
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Book Description
This study examines ways to increase food security, reduce poverty and achieve economic growth in sub-Saharan Africa with ‘water’ through increased participation of the private sector and publicprivatepartnerships. This report is a summary of the findings from a review of the literature and critical analysis thereof. The ‘private sector’ includes all farmers, farm households, and agriculture-based micro, small and medium enterprises (MSMEs). That is: all entities involved in crop, livestock and fish production and marketing, in post-harvest activities and food processing, and in supply chains for the goods, services and information used in the process. The study examines different types of agricultural water development and management. These include smallholder subsistence farming, cultivation of profit-oriented high-value crops, and peri-urban agriculture, as well as successful examples of private sector involvement in various functions or processes, including planning, design, construction, operations and maintenance. The spotlight on ‘water’ does not imply that other factors, such as off farm employment, market development and education, are unimportant.
Author: François Molle
Publisher: CABI
ISBN: 1845932927
Category : Technology & Engineering
Languages : en
Pages : 367
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Book Description
Much hope has been vested in pricing as a means of helping to regulate and rationalize water management, notably in the irrigation sector. The pricing of water has often been applied universally, using general and ideological policies, and not considering regional environmental and economic differences. Almost 15 years after the emphasis laid at the Dublin and Rio conferences on treating water as an economic good, a comprehensive review of how such policies have helped manage water resources an irrigation use is necessary. The case-studies presented here offer a reassessment of current policies by evaluating their objectives and constraints and often demonstrating their failure by not considering the regional context. They will therefore contribute to avoiding costly and misplaced reforms and help design water policies that are based on a deeper understanding of the factors which eventually dictate their effectiveness.
Author: Tushaar Shah
Publisher: IWMI
ISBN: 929090481X
Category : Farms, Small
Languages : en
Pages : 33
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Book Description
This report reviews several decades of global experience in transferring management of government-run irrigation systems to farmer associations or other nongovernmental agencies in an attempt to apply the lessons of success to the African smallholder irrigation context.
Author:
Publisher: International Water Management Institute (IWMI)
ISBN: 9290908653
Category : Technology & Engineering
Languages : en
Pages : 82
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Book Description
Author: Douglas L. Vermillion
Publisher: IWMI
ISBN: 9290903929
Category : Agriculture
Languages : en
Pages : 44
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Book Description
Examines the extent to which the Government of Indonesia's aspirations were realized through turnover program adopted in 1987. The impacts of management turnover on irrigation management and irrigated agriculture in selected systems in West and Central Java are analyzed. This study is part of a comparative research program to examine the impacts of irrigation management transfer in several countries using a common methodology.
Author: Andrew A. Keller
Publisher: IWMI
ISBN: 9290903996
Category : Dams
Languages : en
Pages : 24
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Book Description
Of the four major ways of storing water –in the soil profile, in underground aquifers, in small reservoirs, and in large reservoirs behind dams–the first is possible only for relatively short periods of time. In this paper, the authors concentrate on the three kinds of long-term technologies, and compare the hydrological, operational, economic and environmental aspects of each.
Author: Martin Lacroix
Publisher: IWMI
ISBN: 9290903988
Category : Hydrologic modeling
Languages : en
Pages : 40
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Book Description
Public domain datasets are freely available on the Internet are easy to obtain, and often more up-to-date than those from local sources. This simplifies the modeling process and increases the ability to model basins anywhere in the world, from anywhere with Internet access. Although not all types of data are available, and some conversions may be needed, the information provided does allow for quick and easy simulations of basins. The Semi-Distributed Land-Use Runoff Process (SLURP) hydrological model has been designed to take advantage of such data sources. The application described in this report uses public domain data for topography, land use, seasonal variation in leaf area index (for transpiration) and climate data- all without calibration of parameters.
Author: Christopher Anand Scott
Publisher: IWMI
ISBN: 9290904046
Category : Irrigation laws
Languages : en
Pages : 41
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Book Description
From a river-basin perspective, wastewater irrigation is an important form of water and nutrient reuse; however, there are important water quality, environmental, and public health considerations. This report explores the advantages and risks of urban wastewater reuse for crop production in the water-short Guanajuato river-basin in west-central Mexico, and then by a selective literature review demonstrates how common this practice is worldwide. It also evaluates several alternative water-management scenarios through application of the Interactive River Aquifer Simulation (IRAS) model, developed by Cornell University and Resource Planning Associates.
