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Author : R. E. Mpahlele,International Water Management Institute
Publisher : IWMI
Page : 39 pages
File Size : 42,6 Mb
Release : 2000
Category : Arabie-Olifants River Irrigation Scheme
ISBN : 9789290903956
Author : R. E. Mpahlele
Publisher : Unknown
Page : 128 pages
File Size : 44,6 Mb
Release : 1990
Category : Irrigation farming
ISBN : OCLC:732899679
Author : Tushaar Shah,Barbara van Koppen,Douglas Merrey Marna de Lange and, Madar Samad
Publisher : IWMI
Page : 33 pages
File Size : 51,5 Mb
Release : 2002
Category : Farms, Small
ISBN : 9789290904816
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 : van Koppen, Barbara,Nhamo, Luxon,Cai, Xueliang,Gabriel, M. J.,Sekgala, M.,Shikwambana, S.,Tshikolomo, K.,Nevhutanda, S.,Matlala, B.,Manyama, D.
Publisher : International Water Management Institute (IWMI)
Page : 40 pages
File Size : 54,9 Mb
Release : 2017-06-08
Category : Technology & Engineering
ISBN : 9789290908524
A survey of 76 public smallholder irrigation schemes in the Limpopo Province was jointly conducted by the International Water Management Institute (IWMI), Department of Agriculture, Forestry and Fisheries (DAFF), South Africa, and the Limpopo Department of Agriculture and Rural Development (LDARD), as part of the ‘Revitalization of Smallholder Irrigation in South Africa’ project. About one-third of those schemes was fully utilized; one-third partially utilized; and one-third not utilized in the winter of 2015; however, no single socioeconomic, physical, agronomic and marketing variable could explain these differences in utilization. Sale, mostly for informal markets, appeared the most important goal. Dilapidated infrastructure was the most important constraint cited by the farmers. The study recommends ways to overcome the build-neglect-rebuild syndrome, and to learn lessons from informal irrigation, which covers an area three to four times as large as public irrigation schemes in the province.
Author : Melvyn Kay
Publisher : Food & Agriculture Org.
Page : 52 pages
File Size : 41,7 Mb
Release : 2001
Category : Technology & Engineering
ISBN : 9251045941
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.
Author : International Water Management Institute (IWMI).
Publisher : IWMI
Page : 4 pages
File Size : 50,6 Mb
Release : 2024-07-04
Category : Technology & Engineering
ISBN : 8210379456XXX
Author : Shah, Tushaar,Namara, R.,Rajan, Abhishek
Publisher : IWMI
Page : 53 pages
File Size : 41,6 Mb
Release : 2024-07-04
Category : Technology & Engineering
ISBN : 8210379456XXX
Author : B. Albinson,C. J. Perry
Publisher : IWMI
Page : 30 pages
File Size : 42,5 Mb
Release : 2002
Category : Farms, Small
ISBN : 9789290904717
Smallholder irrigation systems–where farm sizes generally range from a fraction of a hectare to 10 hectares–pose special management problems, especially where the water available for irrigation is frequently less than the demand. The intensity of system adjustments required to meet individual farmer demands, and the administrative complexity of measuring and accounting water deliveries have generally proven excessive when attempting to meet “on demand†schedules, resulting in chaos (often characterized by illegal tampering with infrastructure, and vast differences of water use intensity at different locations in the system). The alternative–provision of a simple service, based on proportional sharing of available supplies on the basis of landholdings–has been resilient for many years over vast areas. The approach is based on a clear delineation between the part of the irrigation system that is actively managed (at various flow rates and water levels) and the part of the system that operates either at full supply level (with proportional division of water down to the level at which farmers rotate among their individual farms), or is completely shut. This operational design is known as a “structured†system, and has well-defined hydraulic characteristics, simplifying operation and management, in turn allowing a clearer definition of water entitlements and the responsibilities of agency staff and farmers. The approach is particularly suited to areas where water is scarce and discipline is needed to ration water among users. An additional benefit, which has been demonstrated in modeling studies using a well–proven model relating to water and yield, is that the productivity of water (which is more important than the more traditional productivity of land when water is scarce) is substantially increased when deficit irrigation is practiced–a widely observed and predictable response to rationed water supplies. Structured systems are most suited where water is scarce, clear definition of water entitlements is needed, management capacity is limited, and investment resources are limited. The approach to determining critical aspects of a structured system design is described in this report.
Author : Hilmy Sally,Charles L. Abernethy
Publisher : IWMI
Page : 384 pages
File Size : 40,9 Mb
Release : 2011-10-21
Category : Agricultural development projects
ISBN : 9789290904946
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.
Author : Atuobi-Yeboah, Afua,Aberman, Noora-Lisa,Ringler, Claudia
Publisher : Intl Food Policy Res Inst
Page : 40 pages
File Size : 53,5 Mb
Release : 2020-11-12
Category : Political Science
ISBN : 8210379456XXX
Irrigated agriculture can support food and nutrition security, increase rural employment and incomes and can act as a buffer against growing climate variability and change. However, irrigation development has been slow in Africa south of the Sahara and Ghana is no exception. Out of a total potential irrigated area of close to 2 million ha, less than 20,000 ha large-scale irrigation and less than 200,000 ha of small-scale irrigation have been developed; but the latter is only an estimate. To identify entry points for accelerating small-scale irrigation development in Ghana, a national and a regional stakeholder Net-Map workshop were held in Accra and Tamale, respectively. The workshops suggest that a wide variety of actors from government, the private sector, international organizations and funders, research organizations and NGOs are involved in the diffusion of small-scale irrigation technologies. However, there are important differences between actors perceived to be key at the national and at the regional levels in northern Ghana. At the national level, diffusion of small-scale irrigation technologies is considered to be largely influenced by the Ghana Irrigation Development Authority together with a series of private sector actors focused on importation, distribution and financing of technologies. Farmers are considered to have no influence over the diffusion of small-scale irrigation, suggesting that small-scale irrigation is largely considered a supply-driven process. In northern Ghana, on the other hand, farmers are considered to be key influencers, although participants noted that much of this was potential influence, together with a larger and more diversified set of government stakeholders that are seen as regulators and possibly gatekeepers. For irrigation diffusion to successfully move from importation to distribution to benefiting smallholder farmers, all of these actors have to come together to better understand farmers’ needs and challenges. A multi-stakeholder platform could help to increase communication between farmers as the ultimate beneficiaries of small-scale irrigation technologies and the many other actors interested in supporting this process.
Author : van Koppen, Barbara,Tapela, B. N.,Mapedza, Everisto
Publisher : IWMI
Page : 48 pages
File Size : 55,5 Mb
Release : 2018-01-31
Category : Technology & Engineering
ISBN : 9789290908623
Author : D. E. Campbell
Publisher : World Bank Publications
Page : 140 pages
File Size : 55,6 Mb
Release : 1995
Category : Technology & Engineering
ISBN : 0821329952
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
Author : Barbara van Koppen,Lesley Hope,Willem Colenbrander
Publisher : IWMI
Page : 28 pages
File Size : 44,6 Mb
Release : 2013-03-06
Category : Electronic
ISBN : 9789290907671
This Working Paper presents methodological and substantive findings of gender-differentiated quantitative farm household surveys about smallholder’s private irrigation technology adoption in Ghana and Zambia. Focusing on three gender variables, household headship, labor provision and plot management, the paper examines adoption rates, types of technologies and gendered labor provision in female- and male-headed households; compares adoption rates on women’s own plots with overall rates; compares women’s decision-making on irrigated plots and rainfed plots; and examines impacts of targeting strategies. Findings suggest that women are proactive irrigation adopters in spite of the many obstacles they face. Removing those obstacles serves both gender equality and irrigation policies.
Author : François Molle,Philippus Wester
Publisher : IWMI
Page : 325 pages
File Size : 49,8 Mb
Release : 2009
Category : Business & Economics
ISBN : 9781845935382
This book contains 11 papers which cover a range of vital topics in the areas of water, agriculture, food security and ecosystems - the entire spectrum of developing and managing water in agriculture, from fully irrigated to fully rainfed lands. They are about people and society, why they decide to adopt certain practices and not others and, in particular, how water management can help poor people. They are about ecosystems - how agriculture affects ecosystems, the goods and services ecosystems provide for food security and how water can be managed to meet both food and environmental security objectives. This is the eighth book in the series.
Author : Herbert G. Blank,Clifford M. Mutero,H. Murray-Rust
Publisher : Unknown
Page : 348 pages
File Size : 44,6 Mb
Release : 2002
Category : Arid regions
ISBN : UIUC:30112084114070