Your search found 13 records
1 Williams, Timothy O.; Taal, B-M.; Villholth, Karen; Johnston, Robyn; Giordano, Meredith. 2014. Accessing and putting water to productive use in Sub-Saharan Africa. In van der Bliek, Julie; McCornick, Peter; Clarke, James (Eds.). On target for people and planet: setting and achieving water-related sustainable development goals. Colombo, Sri Lanka: International Water Management Institute (IWMI). pp.43-45.
(Location: IWMI HQ Call no: IWMI Record No: H046801)
(345 KB)
2 Mul, Marloes L.; Williams, Timothy O.; Cofie, Olufunke. 2015. Overview of the scientific, political and financial landscapes of Climate-Smart Agriculture in West Africa: sector of water resources. In Zougmore, R.; Sy Traore, A.; Mbodj, Y. (Eds.). Overview of the scientific, political and financial landscape of climate-smart agriculture in West Africa. Copenhagen, Denmark: CGIAR Research Program on Climate Change, Agriculture and Food Security (CCAFS). pp.47-59. (Also in French) (CGIAR Research Program on Climate Change, Agriculture and Food Security (CCAFS) Working Paper 118)
(Location: IWMI HQ Call no: e-copy only Record No: H047077)
(2.02 MB)
3 Mul, Marloes L.; Williams, Timothy O.; Cofie, Olufunke. 2015. Paysage scientifique, politique et financier de l’Agriculture Intelligente face au Climat (AIC) en Afrique de l’Ouest : le secteur des ressources en eau. In French. [Overview of the scientific, political and financial landscapes of Climate-Smart Agriculture in West Africa: sector of water resources]. In Zougmore, R.; Sy Traore, A.; Mbodj, Y. (Eds.). Paysage scientifique, politique et financier de l’Agriculture Intelligente face au Climat en Afrique de l’Ouest. Copenhagen, Denmark: CGIAR Research Program on Climate Change, Agriculture and Food Security (CCAFS) pp.47-59. (Also in English) (CGIAR Research Program on Climate Change, Agriculture and Food Security (CCAFS) Working Paper 118)
(Location: IWMI HQ Call no: e-copy only Record No: H047078)
(2.02 MB)
(Location: IWMI HQ Call no: e-copy only Record No: H047617)
(1.80 MB)
Large-scale agricultural land investments in Africa are often considered solely from the land perspective. Yet land, water and other natural resources are closely interlinked in agricultural production and in sustaining rural livelihoods. Such investments involving irrigation will potentially have implications for water availability and utilization by other users, making it imperative to regard water as an economic rather than a free good. Focusing on a vast irrigable area in Mali with recent large-scale investments, a bio-economic model was used to demonstrate that an improved water valuation system is needed to balance different water users’ needs while ensuring adequate environmental flow.
5 Kolavalli, S.; Williams, Timothy O.. 2016. Socioeconomic trends and drivers of change. In Williams, Timothy O.; Mul, Marloes L.; Biney, C. A.; Smakhtin, Vladimir (Eds.). The Volta River Basin: water for food, economic growth and environment. Oxon, UK: Routledge - Earthscan. pp.13-30.
(Location: IWMI HQ Call no: IWMI Record No: H047722)
6 Williams, Timothy O.; Mul, Marloes L.; Biney, C. A.; Smakhtin, Vladimir. 2016. Introduction. In Williams, Timothy O.; Mul, Marloes L.; Biney, C. A.; Smakhtin, Vladimir (Eds.). The Volta River Basin: water for food, economic growth and environment. Oxon, UK: Routledge - Earthscan. pp.3-9.
(Location: IWMI HQ Call no: IWMI Record No: H047721)
7 Williams, Timothy O.; Barron, Jennie; Cofie, Olufunke. 2016. Sustainable agricultural intensification in the Volta River Basin. In Williams, Timothy O.; Mul, Marloes L.; Biney, C. A.; Smakhtin, Vladimir (Eds.). The Volta River Basin: water for food, economic growth and environment. Oxon, UK: Routledge - Earthscan. pp.228-241.
(Location: IWMI HQ Call no: IWMI Record No: H047735)
(Location: IWMI HQ Call no: IWMI Record No: H047720)
9 Williams, Timothy O.; Mul, Marloes; Cofie, Olufunke; Kinyangi, J.; Zougmore, R.; Wamukoya, G.; Nyasimi, M.; Mapfumo, P.; Speranza, C. I.; Amwata, D.; Frid-Nielsen, S.; Partey, S.; Girvetz, E.; Rosenstock, T.; Campbell, B. 2015. Climate smart agriculture in the African context. Background Paper. Paper presented at the Feeding Africa - An Action Plan for African Agricultural Transformation. Session 1: Unlocking Africa’s Agricultural Potentials for Transformation to Scale, Dakar, Senegal, 21-23 October 2015. 26p.
(Location: IWMI HQ Call no: e-copy only Record No: H048252)
(Location: IWMI HQ Call no: e-copy only Record No: H048870)
Land degradation is a major challenge limiting crop production in Ethiopia. Integrated soil and water conservation is widely applied as a means to reverse the trend and increase productivity. This study investigated the effects of such integrated approaches at two sites, Jeldu and Diga, in Western Ethiopia. A split plot design with physical soil and water conservation in the main plots and agronomic practices in the sub plots was employed. Maize (Zea mays L.) followed by groundnut (Arachis hypogaea L.) at Diga, and wheat (Triticum aestivum) followed by faba bean (Vicia faba L.) were the test crops. Surface soils were sampled before sowing and after the crop harvest, and analyzed for selected parameters. Soil moisture content during the growing period was also monitored. The use of soil bund increased soil moisture content, and significantly (P < 0.05) increased days to flowering and maturity, kernel weight and harvest index, grain yield of the test crops, with the exception of maize. The improved agronomic practices (intercropping, fertilization and row planting) significantly (P < 0.05) increased grain yield of all the test crops. The effect of the treatments on soil parameters may require longer time to be evident. Although the increase in crop yield due to soil bund and the improved agronomic practices is eminent, economic analysis is necessary before recommending the widespread use of the improved options.
11 Williams, Timothy O.. 2019. Managing water for food and agricultural transformation in Africa: key issues and priorities. In Allan, T.; Bromwich, B.; Keulertz, M.; Colman, A. (Eds.). The Oxford handbook of food, water and society. New York, NY, USA: Oxford University Press. pp.470-487.
(Location: IWMI HQ Call no: 333.91 G000 ALL Record No: H049503)
(3.24 MB)
(Location: IWMI HQ Call no: e-copy only Record No: H049501)
(0.54 MB) (552 KB)
Degradation of crop and grazing lands is a pervasive problem that negatively impacts agricultural productivity and livelihoods of crop-livestock farmers in the Blue Nile basin of Ethiopia. Area enclosure together with a cut and carry livestock feeding system is often advocated as an approach for the regeneration of degraded grazing lands. This paper reports the results of a two-year farmer participatory study conducted to assess the effects of infiltration trenches (ITs) and Chloris gayana Kunth (Rhodes grass; cultivar Masaba; tetraploid; C4 grass species) reseeding on restoration of degraded grazing lands. A split plot design was used with IT as the main plot and C. gayana reseeding as a sub-plot on 28 private grazing plots under enclosure. The results showed that IT alone increased soil moisture content and prolonged the growing period. IT and C. gayana reseeding together significantly (P = 0.05) increased herbage dry matter yield and improved soil chemical properties. The highest mean herbage dry matter yield (21 Mg ha-1 per cut) was recorded for plots treated with IT and reseeded with C. gayana. The higher herbage dry matter yield was attributed to increased soil moisture and the resultant prolonged growing period induced by the trenches coupled with the ability of C. gayana to effectively utilize the retained water. The results suggest that an integrated land management approach involving enclosure, in-situ water conservation and C. gayana reseeding can rapidly increase biomass productivity on degraded grazing lands while also enhancing soil quality with concomitant livelihood benefits for farmers.
(Location: IWMI HQ Call no: e-copy only Record No: H049733)
(0.63 MB) (640 KB)
Investments in irrigation contribute to poverty reduction and enhance food security. This paper considers irrigation investments more broadly in the context of rural–urban linkages and thus examines rural irrigation schemes and peri-urban and urban agriculture using freshwater, groundwater and wastewater. We present case studies from East, West and Southern Africa, while focusing on the imperative of smallholders and of food security and nutrition. Evidence from Big Data and telecoupling show that, amid global change and sustainability issues, irrigation development strengthens connections between humans and nature with notable benefits to food security. Transforming investments to feed the future generation require priority investments in irrigation, solar energy for groundwater pumping, groundwater development policy, and integration of peri-urban and urban agriculture into food systems. Equally important will be no-regret interventions in wastewater reuse, water storage and groundwater buffer, micro-irrigation, and wholesale reconfiguration of farming systems, through anticipatory investments, to safeguard food security and sustainability into the distant future.
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