Your search found 5 records
1 Evans, R.. 1994. Switch-hitting with subsurface drainage/irrigation systems. Irrigation Journal, 44(4):8,12,14,16-17.
Subsurface irrigation ; Drainage ; Irrigation canals ; Pumping ; Crop-based irrigation ; Design criteria ; Water table ; Monitoring / USA
(Location: IWMI-HQ Call no: PER Record No: H014970)
2 Sadler, J.; Evans, R.; Buchleiter, G.; King, B.; Camp, C. 2000. Venturing into precision agriculture. Irrigation Journal, 50(3):15-17.
(Location: IWMI-HQ Call no: PER Record No: H026278)
3 Collins, H. M.; Evans, R.. 2002. The third wave of science studies: Studies of expertise and experience. Social Studies of Science, 32(2):235-296.
(Location: IWMI-HQ Call no: P 6313 Record No: H031867)
4 Dillon, P.; Gale, I.; Contreras, S.; Pavelic, Paul; Evans, R.; Ward, J. 2009. Managing aquifer recharge and discharge to sustain irrigation livelihoods under water scarcity and climate change. In Bloschl, G.; van de Giesen, N.; Muralidharan, D.; Ren, L.; Seyler, F.; Sharma, U.; Vrba, J. (Eds.). Improving integrated surface and groundwater resources management in a vulnerable and changing world: proceedings of Symposium JS.3 at the Joint Convention of the International Association of Hydrological Sciences (IAHS) and the International Association of Hydrogeologists (IAH), Hyderabad, India, 6-12 September 2009. Wallingford, UK: International Association of Hydrological Sciences (IAHS). pp.1-12. (IAHS Publication 330)
Hydrogeology ; Water scarcity ; Aquifers ; Groundwater recharge ; Climate change ; Water supply ; Case studies ; Farmer-led irrigation ; Farmer managed irrigation systems / Australia / India / Philippines / Queensland / Angas-Bremer Rivers / Adelaide / Tamil Nadu / Andhra Pradesh / Gujarat / Ilocos Norte
(Location: IWMI HQ Call no: e-copy only Record No: H042539)
http://ks360352.kimsufi.com/redbooks/a330/iahs_330_0001.pdf
https://vlibrary.iwmi.org/pdf/H042539.pdf
https://vlibrary.iwmi.org/pdf/H042539.pdf
(0.54 MB)
Decreasing mean annual rainfall, and the increasing rainfall intensity, temperature and evaporation, forecast for semi-arid parts of the world where water supplies are already stressed will require storage capacity to be increased or more stable resources to be harnessed to maintain security of water supplies at current levels. Managed aquifer recharge (MAR) to enhance below-ground storage of water is considered a positive contribution to stabilising drinking water supplies in cities subject to climate change. However, this paper shows that in rural irrigation areas where groundwater levels are already dropping due to an imbalance between extraction and natural recharge, unless favourable conditions permit sufficient recharge enhancement, MAR will need to be supplemented by discharge management to be successful in sustaining irrigation supplies. In fractured rock aquifers with low storage capacity, the symptoms of excessive demand are accelerated. In some cases MAR may give false hope where the benefits only accrue to the wealthiest landholders with deepest wells, or landholders closest to recharge facilities. This paper contains theoretical examples and case studies from Australia and India to illustrate a spectrum of approaches involving different contributions of recharge enhancement and discharge management to reduce groundwater deficits. A model for farmer-led groundwater demand management in the Philippines is anticipated to be effective in constraining consumption and preventing coastal saline intrusion in northern Luzon where aquifers are at an early stage of development. Similarly, models are proposed to reduce demand on aquifers that are already showing advanced symptoms of stress, while equitably supporting livelihoods at their maximum sustainable value.
5 Mariwah, S.; Evans, R.; Antwi, K. B. 2019. Gendered and generational tensions in increased land commercialisation: rural livelihood diversification, changing land use, and food security in Ghana's Brong-Ahafo region. Geo: Geography and Environment, 6(1):1-17. [doi: https://doi.org/10.1002/geo2.73]
Food security ; Gender ; Living standards ; Land use ; Commercialization ; Diversification ; Crop production ; Cashews ; Smallholders ; Farmers ; Households ; Income generation ; Rural communities ; Poverty ; Sustainability ; Rural youth ; Strategies / Ghana / Brong-Ahafo Region
(Location: IWMI HQ Call no: e-copy only Record No: H049251)
https://rgs-ibg.onlinelibrary.wiley.com/doi/epdf/10.1002/geo2.73
https://vlibrary.iwmi.org/pdf/H049251.pdf
https://vlibrary.iwmi.org/pdf/H049251.pdf
(0.59 MB) (608 KB)
Many smallholder farmers in Jaman North District, Brong-Ahafo Region, Ghana are shifting from food crop production to increased cultivation of cashew, an export cash crop. This paper examines gendered and generational tensions in increased commercialisation of land, livelihood diversification, and household food security in the context of globalisation and environmental change. Using qualitative, participatory research with 60 middle-generation men and women, young people and key stakeholders, the research found that community members valued the additional income stream. Young people and women, however, were apprehensive about the long-term consequences for food security of allocating so much land to cashew plantations. Young, middle, and older generations were concerned about their weak bargaining position in negotiating fair prices with export companies and intermediaries. Greater integration into the global economy exposed rural actors to multiple risks and inequalities, such as the uneven effects of economic globalisation, rises in food prices, hunger and food insecurity, growing competition for land, youth outmigration and climate change. The shift towards cashew cultivation appears to be exacerbating gender and generational inequalities in access to land and food insecurity and leading to exploitation within the global agri-food supply chain among already vulnerable rural communities in the global South. With stronger farmer associations and cooperatives, however, cashew farmers stand the chance of benefitting from greater integration into the global economy, through strengthened bargaining positions. Greater understanding is needed about the complex interactions between sustainable food systems, changing land use and gender and generational inequalities in rural spaces.
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