Download or read book Successful Small scale Irrigation in the Sahel written by Ellen P. Brown and published by . This book was released on 1992-01-01 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Irrigation and Irrigated Agriculture Potential in the Sahel written by and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The report assesses the potential of developing irrigation in the Niger River Basin under various agricultural scenarios accounting for biophysical and socio-economic variables, and for expected climate change. Irrigation potential is assessed in two parts. The first reviews recent literature in English and French (2010 onwards) on sustainable irrigation potential in the Sahel (i.e. Lake Chad basin, Niger, Senegal Volta River basins). Sahel agriculture possesses a significant irrigation potential. However, estimates fluctuate greatly depending on the scale of irrigation schemes, whether the resource is surface or ground water, expected and actual irrigation costs but also on determinants of success of irrigation schemes, including the varying effects when interacting with other inputs, such as fertilisers. Past, and not always successful, efforts were based on large public irrigation schemes (i.e. river dams and related canals). In a growing number of contexts, investments in small and micro-irrigation systems are identified as more desirable than conventional large schemes. Existing small-scale irrigation systems in the region are known to be developing however limited systematised evidence exists. The realisation of this potential is very sensitive to the costs of irrigation, among the highest in the world, with some technologies more sensitive than others (i.e. small river diversions). Moreover, irrigation potential is influenced by synergies among irrigation and other agricultural production technologies - it is maybe worthwhile to recall that irrigation potential is not a static concept, but it is contingent on levels of other inputs. Hence, irrigation investments need to be put in the broader context of productivity enhancement, rural development efforts and global changes such as urbanisation The development of irrigation in the Sahel and in the Niger River basin in particular is a key intervention area for agriculture and development policy in general. Current policy identifies irrigation development as an instrument fostering food security. However, from the angle of optimization, rainfed agriculture retains the larger potential for development when looking at costs and overall potential profits. Moreover, support to the development of irrigated agriculture needs to be fully integrated with a relevant and adapted support to agriculture in general, particularly with regards to how it mitigates risk. Access to irrigation is expected to expand farmers' production opportunities. It mitigates production risks, even in low quantities as crop-saving irrigation. By reducing risk, it encourages farmers to make more intensive use of inputs and land. Moreover, this dynamic effect is also influenced by the type of irrigation systems accessed. For example, the literature has identified that farmers which have some off-farm income are particularly interested in investing in agriculture if irrigation is made available, whereas other groups may be interested in improving first their access to credit for farm inputs with then a view on irrigation. How production risks are perceived need to be clearly identified so that the irrigation systems fostered can be seen as risk-reducing Functioning supply chains would also make irrigation more profitable as they reduce losses of potentially more valuable products from irrigated agriculture and enhance market access. Recently, registered regional increases in groundwater storage have been associated to diffuse recharge, partially compensating for groundwater withdrawal associated with irrigation development. Hence, hinting at some level of sustainability in the use of groundwater for small-scale irrigation in the Sahel, despite the risks associated with salinization. The second part focuses on the Niger Basin to assess and quantify its irrigation potential through modelling. The model uses static biophysical and socio-economic indicators in model optimising profits of mainly small holder farms under 4 possible agricultural scenarios with distinctive productivity levels. In general, the projected irrigated area does not evolve much between scenarios mainly because of high productions costs associated with increased irrigation. Although irrigation potential is theoretically large, investing in both irrigated and rainfed input intensification offers the largest potential gains. The results for total irrigation potential in terms of farmed area are in the range of 0.6-09M hectares, from the estimated current 0.53M hectares of irrigated land under the most productive scenario in terms of agricultural yields. However, even the most yielding scenario results of the current study are significantly lower than previous estimates developed in the literature, and depend on assumed irrigation and input costs. The specific strengths of this new estimation are that of using input costs from recent agricultural surveys (i.e. LSMS-ISA) along with crop suitability maps. Its main limitation is that is does not distinguish between irrigation technologies and related costs, constraining estimates to a generic (gravity) irrigation. In turn, the expansion of agriculture is exogenously determined and does not depend upon the variables analysed.

Download or read book Water Management in Africa and the Middle East written by International Development Research Centre (Canada) and published by IDRC. This book was released on 1996 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water Management in Africa and the Middle East: Challenges and Opportunities

Download or read book Prospects for Small scale Irrigation Development in the Sahel written by Jon R. Moris and published by . This book was released on 1984 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Smallholder Irrigation Technology written by Melvyn Kay and published by Food & Agriculture Org.. This book was released on 2001 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report is a view of irrigation technologies for smallholders in the context of improving rural livelihoods, especially in regard to the prospects for sub-Saharan Africa. The role of traditional technologies is evaluated and modern water distribution technologies, such as sprinkler and trickle irrigation, are reviewed. A broad classification has been made based on climate and the traditional agricultural background of the local people, which links technology options to specific places--to agricultural regions and to countries.

Download or read book Manual of Good Practices in Small Scale Irrigation in the Sahel written by Dieter Nill and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Irrigation Development In Africa written by Jon R. Moris and published by Routledge. This book was released on 2019-04-11 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: Irrigation Development in Africa: Lessons of Experience is a veritable encyclopedia of information on African irrigation. It describes a significant subset of the African irrigation experience, from traditional flood recession systems to large projects like Gezira and Bura.

Download or read book Small scale Irrigation in Africa in the Context of Rural Development written by Harold W. Underhill and published by . This book was released on 1984 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Private irrigation in Sub Saharan Africa regional Seminar on Private Sector Participation and Irrigation Expansion in Sub Saharan Africa Accra Ghana 22 26 October 2001 written by Hilmy Sally and published by IWMI. This book was released on 2011-10-21 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Only 4 percent of arable land in sub-Saharan Africa is irrigated, using just 2 percent of the available water resources. Furthermore, 18 percent of the area equipped for irrigation is not utilized at all and the intensity of use varies between 50 percent and 80 percent. This highlights the huge potential available for intensifying and expanding irrigated area, provided that the investments required can be successfully mobilized. However, it must be noted that if investments in irrigation are to yield satisfactory returns, investments must also be made in a series of related activities. Current global figures for the amount of private investment in irrigation confirm that good returns can indeed be achieved. Prospects for sub-Saharan Africa would be far more favorable if public development assistance, particularly foreign direct investments, did not show declining trends.

Download or read book Sustainable Irrigation Development in the White Volta sub Basin written by Eric Antwi Ofosu and published by CRC Press. This book was released on 2011-12-16 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sub-Saharan Africa has an irrigation potential of about 42 million hectares of which only 17% is developed. Despite several investments in irrigation the growth is slow. This study aims at helping to achieve sustainable irrigation in sub-Saharan Africa, through gaining a better understanding of productive irrigation water use and effective management of irrigation development. The study is conducted in the White Volta sub-basin specifically in Northern Ghana and Southern Burkina Faso which have been experiencing rapid irrigation development since the mid 1990s. The study identified growing markets for irrigated products as an important driving force behind the expansion of irrigation which has given rise to new technologies. The new technologies have spread because they gave farmers direct control over water sources. These new technologies allow relatively small farm sizes which can be adequately managed by the surveyed farmers. As a result high productivities are achieved. The hydrological impact of upscaling irrigation in the sub-basin is sustainable and will maximize the overall benefits derived from water resources in the Volta Basin.

Download or read book Institutional Alternatives in African Smallholder Irrigation written by Tushaar Shah and published by IWMI. This book was released on 2002 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Costs and Performance of Irrigation Projects written by Arlene B. Inocencio and published by IWMI. This book was released on 2007 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: High irrigation investment costs together with declining world prices for food and the failures of a number of high profile past irrigation projects are the main reasons for the reluctance of development agencies and governments in sub-Saharan Africa to invest more resources in irrigation. This study aims to systematically establish whether costs of irrigation projects in sub-Saharan Africa are truly high, determine the factors which influence costs and performance of irrigation projects, and recommend cost-reducing and performance-enhancing options to make irrigation investments in the region more attractive. It analyzes 314 irrigation projects implemented from 1967 to 2003 in 50 countries in Africa, Asia, and Latin America funded by the World Bank, African Development Bank and the International Fund for Agricultural Development.

Download or read book Water Management Purificaton and Conservation in Arid Climates written by Mattheus F. A. Goosen and published by CRC Press. This book was released on 1999-07-21 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new three volume series presents a broad and integrated approach to water management, purification, and conservation in arid climates. Volume one includes an introductory chapter on water problems and water resources in arid climates followed by specific chapters covering various aspects of water management. Volumes two and three deal with water purification and water conservation, respectively. Many textbooks on water issues normally deal with only one of these areas. This series covers all three areas with an emphasis on the problems faced by arid regions. The three volume series will appeal to industry specialists in desalination and wastewater treatment, irrigation engineers, graduate and undergraduate students in hydrology, water management and conservation professionals, government personnel involved in water resources development, decision makers, environmentalists, employees of the petrochemical industry, and individuals wishing to specialize in water management, purification and conservation.

Download or read book Irrigation Potential in Africa written by Karen Frenken and published by Food & Agriculture Org.. This book was released on 1997 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design and Operation of Smallholder Irrigation in South Asia written by D. E. Campbell and published by World Bank Publications. This book was released on 1995 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: World Bank Technical Paper No. 256. World Bank lending contributes substantially to financing irrigation investments around the world. Asia has been the chief recipient of such World Bank lending, receiving 70 percent. India alone accounts for 27 p

Download or read book Irrigation in Sub Saharan Africa written by Shawki M. Barghouti and published by . This book was released on 1990-01-01 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Strategy to Develop Agriculture in Sub Saharan Africa and a Focus for the World Bank written by Kevin M. Cleaver and published by World Bank Publications. This book was released on 1993-01-01 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: For 25 years, population growth has outpaced increases in agricultural production in Sub-Saharan Africa. The lack of food and the degradation of agricultural land have forced policymakers to reassess agricultural strategies for the region. This paper provides such a reassessment by identifying policies and investments that have worked and those that have not. The author sets out the common elements required for agricultural and rural development throughout the region. The strategy presented in this paper comprises elements from several development sectors, including transport, water supply, education, finance, and the environment. The author makes five broad recommendations to promote Region: adoption of policies to promote private sector farming and agricultural marketing, processing, and credit development and distribution of new technologies inclusion of farmers in decisions affecting their livelihood development of infrastructure and social programs in support of agriculture improved management of natural resources Projections of the likely effects of the proposed policies and investments are included. Tables throughout the text present statistics on agricultural growth rates, commodity prices, and deforestation in the region. An annex contains more general tables, with information on population growth and fertility rates, land use, agricultural exports, and droughts. The strategies suggested in this paper will be of interest to policymakers, academics, and to development practitioners involved in African agriculture.