Your search found 28 records
1 Abdul-Ghaniyu, S.; Kranjac-Berisavljevic, G.; Yakubu, I. B.; Keraita, B.. 2002. Source and quality of water for urban vegetable production, Tamale, Ghana. Urban Agriculture Magazine, 8:10.
(Location: IWMI-HQ Call no: IWMI 631.7.2 G200 ABU Record No: H031906)
http://www.ruaf.org/sites/default/files/Sources%20and%20Quality%20-%20%20Tamale,%20Ghana.pdf
https://vlibrary.iwmi.org/pdf/H_31906.pdf
https://vlibrary.iwmi.org/pdf/H_31906.pdf
(176.96 KB)
2 Drechsel, P.; Blumenthal, U. J.; Keraita, B.. 2002. Balancing health and livelihoods: Adjusting wastewater irrigation guidelines for resource-poor countries. Urban Agriculture Magazine, 8:7-9.
Wastewater ; Irrigation water ; Urbanization ; Water pollution ; Public health ; Farmers / West Africa
(Location: IWMI-HQ Call no: IWMI 631.7.5 G100 DRE Record No: H031910)
http://www.ruaf.org/sites/default/files/Balancing%20Health%20and%20Livelihoods.pdf
https://vlibrary.iwmi.org/pdf/H_31910.pdf
https://vlibrary.iwmi.org/pdf/H_31910.pdf
(204.09 KB)
3 Keraita, B.; Drechsel, P.; Huibers, F.; Raschid Sally, L. 2002. Wastewater use in informal irrigation in urban and periurban areas of Kumasi, Ghana. Urban Agriculture Magazine, 8:11-13.
(Location: IWMI-HQ Call no: IWMI 631.7.5 G200 KER Record No: H031917)
http://www.ruaf.org/sites/default/files/Wastewater%20Use%20in%20Informal%20Irrigation.pdf
https://vlibrary.iwmi.org/pdf/H_31917.pdf
https://vlibrary.iwmi.org/pdf/H_31917.pdf
(264.89 KB)
4 Keraita, B.; Drechsel, P.; Rashid, L. 2002. Wastewater use in informal irrigation in urban and peri-urban areas of Kumasi, Ghana. In CTA/ETC-RUAF/CREPA Visit d’ etude et Atelier International sur la Réutilisation des Eaux Usées en Agriculture Urbaine: Un défi pour les municipalities en Afrique de l’Ouest et du Centre, Ouagadougou Burkina Faso, 3-8 Juin 2002. Rapport Final. Wageningen, Netherlands: CTA; Leusden, Netherlands: ETC-RUAF; Ouagadougou, Burkina Faso: CREPA. pp.125-142.
Wastewater ; Water reuse ; Water quality ; Irrigation practices ; Costs ; Income ; Vegetables ; Gender ; Farmers ; Water rights / Ghana / Kumasi
(Location: IWMI-HQ Call no: IWMI 631.7.5 G200 KER Record No: H031918)
(0.42 MB) (2.0MB)
5 Keraita, B.. 2002. Wastewater irrigation: No water to waste, not even wastewater. Spore, 101:16.
(Location: IWMI-HQ Call no: P 6348 Record No: H032344)
(0.12 MB)
6 Keraita, B.; Danso, G.; Drechsel, P. 2003. Urban irrigation methods and practices in Ghana and Togo. Urban Agriculture Magazine, 10:6-7.
Irrigation practices ; Irrigation equipment ; Pumps ; Pipes ; Vegetables ; Water requirements / Ghana / Togo
(Location: IWMI-HQ Call no: P 6439 Record No: H032726)
http://www.ruaf.org/sites/default/files/Urban%20Irrigation%20Methods%20and%20Practices.pdf
https://vlibrary.iwmi.org/pdf/H_32726.pdf
https://vlibrary.iwmi.org/pdf/H_32726.pdf
(215.40 KB)
7 Keraita, B.; Clark, J. 2004. State, management and effects of urban wastewater in Ghana. In Harvey, P. (Ed.). Towards the millennium development goals - actions for water and environmental sanitation: proceedings of the 29th WEDC International Conference, Abuja, Nigeria, 22 - 26 September 2003. Leicestershire, UK: Water, Engineering and Development Centre (WEDC). pp.229-232.
(Location: IWMI-HQ Call no: IWMI 628 G200 KER Record No: H033173)
8 Keraita, B.; Drechsel, P.; Amoah, P. 2003. Influence of urban wastewater on stream water quality and agriculture in and around Kumasi, Ghana. Environment and Urbanization, 15(2):171-178.
Wastewater ; Irrigation water ; Water quality ; Irrigation water ; Sanitation ; Public health ; Risks / Ghana / Kumasi
(Location: IWMI-HQ Call no: IWMI 631.7.5 G200 KER Record No: H033174)
(0.20 MB)
9 Cofie, O.; Drechsel, P.; Obuobie, E.; Danso, G.; Keraita, B.. 2003. Environmental sanitation and urban agriculture in Ghana. In Harvey, P. (Ed.). Proceedings of the 29th WEDC International Conference on Towards the Millennium Development Goals, Abuja, Nigeria, 22-26 September 2003. Leicestershire, UK: Water, Engineering and Development Centre (WEDC). pp.87-90.
(Location: IWMI-HQ Call no: IWMI 631.7.5 G200 COF Record No: H033176)
http://wedc.lboro.ac.uk/resources/conference/29/Cofie.pdf?TARGET=_blank
https://vlibrary.iwmi.org/pdf/H033176.pdf
https://vlibrary.iwmi.org/pdf/H033176.pdf
(0.08 MB) (77.71KB)
10 Keraita, B.; Drechsel, Pay; Klutse, A.; Cofie, Olufunke O. 2014. On-farm treatment options for wastewater, greywater and fecal sludge with special reference to West Africa. Colombo, Sri Lanka: International Water Management Institute (IWMI). CGIAR Research Program on Water, Land and Ecosystems (WLE). 36p. (Resource Recovery and Reuse Series 01) [doi: https://doi.org/10.5337/2014.203]
On-farm research ; Wastewater treatment ; Water quality ; Water storage ; Irrigation water ; Faecal coliforms ; Sewage sludge ; Contamination ; Reservoirs ; Filtration ; Weirs ; Ponds ; Wells ; Wetlands ; Health hazards ; Farmers ; Sedimentation ; Helminths ; Moringa / West Africa / Ghana
(Location: IWMI HQ Call no: IWMI Record No: H046382)
(2.20 MB)
11 Lautze, Jonathan; Stander, E.; Drechsel, Pay; da Silva, A. K.; Keraita, B.. 2014. Global experiences in water reuse. Colombo, Sri Lanka: International Water Management Institute (IWMI). CGIAR Research Program on Water, Land and Ecosystems (WLE). 31p. (Resource Recovery and Reuse Series 04) [doi: https://doi.org/10.5337/2014.209]
Water reuse ; Wastewater treatment ; Wastewater irrigation ; Water quality ; Water scarcity ; Environmental effects ; Health hazards ; Farmers ; Aquifers ; Sustainability ; Case studies
(Location: IWMI HQ Call no: IWMI Record No: H046593)
(1.10 MB)
12 Drechsel, Pay; Keraita, B.. (Eds.) 2014. Irrigated urban vegetable production in Ghana: characteristics, benefits and risk mitigation. Colombo, Sri Lanka: International Water Management Institute (IWMI). 247p. [doi: https://doi.org/10.5337/2014.219]
Irrigated farming ; Urban agriculture ; Suburban agriculture ; Vegetable growing ; Risk management ; Wastewater irrigation ; Cropping systems ; Food security ; Food supply ; Sanitation ; Water quality ; Water use ; Water policy ; Economic aspects ; Financing ; Households ; Income ; Marketing ; Gender ; Women farmers ; Land tenure ; Soil fertility ; Biological contamination ; Pesticide residues ; Helminths ; Heavy metals ; Faecal coliforms ; Environmental health ; Sustainability ; Public health ; Health hazards ; Malaria ; Stakeholders / Ghana / West Africa
(Location: IWMI HQ Call no: IWMI Record No: H046597)
(3.76 MB)
13 Keraita, B.; Silverman, A.; Amoah, Philip; Asem-Hiablie, S. 2014. Quality of irrigation water used for urban vegetable production. In Drechsel, Pay; Keraita, B. (Eds.) Irrigated urban vegetable production in Ghana: characteristics, benefits and risk mitigation. Colombo, Sri Lanka: International Water Management Institute (IWMI). pp.62-73.
Irrigation water ; Water use ; Water quality ; Waste treatment ; Faecal coliforms ; Urban agriculture ; Vegetable growing ; Farmers ; Sanitation ; Helminths ; Contamination ; Heavy metals / Ghana / Kumasi / Accra / Tamale
(Location: IWMI HQ Call no: IWMI Record No: H046603)
(628 KB)
This chapter presents findings from studies conducted in Accra, Kumasi and Tamale aimed at assessing the quality of irrigation water used by farmers in and around the cities. Samples for laboratory analysis were taken from sources of water used for irrigation. Microbiological, chemical and other emerging contaminants are presented.
14 Keraita, B.; Cofie, Olufunke O. 2014. Irrigation and soil fertility management practices. In Drechsel, Pay; Keraita, B. (Eds.) Irrigated urban vegetable production in Ghana: characteristics, benefits and risk mitigation. Colombo, Sri Lanka: International Water Management Institute (IWMI). pp.74-88.
Irrigation management ; Irrigation methods ; Soil fertility ; Nutrient management ; Farmers ; Urban agriculture ; Wells ; Pumps / Ghana / Kumasi / Accra / Tamale
(Location: IWMI HQ Call no: IWMI Record No: H046604)
(395 KB)
This chapter describes the different irrigation methods and nutrient application practices used by urban vegetable farmers. Data are based on surveys conducted in Kumasi, Accra and Tamale. Recent relevant publications are also reviewed.
15 Drechsel, Pay; Keraita, B.; Seidu, R.; Abaidoo, R. C. 2014. Human health risks from wastewater-irrigated vegetable farming. In Drechsel, Pay; Keraita, B. (Eds.) Irrigated urban vegetable production in Ghana: characteristics, benefits and risk mitigation. Colombo, Sri Lanka: International Water Management Institute (IWMI). pp.104-115.
Public health ; Health hazards ; Wastewater irrigation ; Vegetables ; Biological contamination ; Heavy metals ; Pesticides / Ghana / Accra
(Location: IWMI HQ Call no: IWMI Record No: H046606)
(149 KB)
Contamination levels of water and crops which exceed common standards are only a first indication of human health risks. This chapter shows estimates of human health risks from consumption of wastewater-irrigated vegetables based for example on dose-response modeling. The chapter focuses on human health risks and risk perceptions of microbiological and chemical contaminants such as heavy metals and pesticides.
16 Obuobie, E.; Keraita, B.; Hope, L.; Agodzo, S. K. 2014. Health risk perceptions of stakeholders in irrigated urban vegetable farming. In Drechsel, Pay; Keraita, B. (Eds.) Irrigated urban vegetable production in Ghana: characteristics, benefits and risk mitigation. Colombo, Sri Lanka: International Water Management Institute (IWMI). pp.116-135.
Urban agriculture ; Irrigated farming ; Irrigation water ; Wastewater irrigation ; Vegetable growing ; Health hazards ; Stakeholders ; Farmers ; Surveys / Ghana / Accra / Kumasi / Tamale
(Location: IWMI HQ Call no: IWMI Record No: H046607)
(295 KB)
This chapter presents a compilation of survey results on perceptions of urban vegetable farmers, traders and consumers, and of local authorities/officials on urban open-space vegetable farming in general and irrigation with polluted water sources in particular. Information presented is based on surveys conducted in 2002 to 2003 and 2005 to 2006 involving over 1,000 vegetable consumers, 150 vegetable sellers, 24 city officials and over 140 farmers in Accra, Kumasi and Tamale. Reviews from other related literature have also been included.
17 Drechsel, Pay; Keraita, B.; Amoah, Philip; Karg, H. 2014. Health risk management for safe vegetable irrigation. In Drechsel, Pay; Keraita, B. (Eds.) Irrigated urban vegetable production in Ghana: characteristics, benefits and risk mitigation. Colombo, Sri Lanka: International Water Management Institute (IWMI). pp.180-198.
Health hazards ; Risk management ; Vegetable growing ; Wastewater irrigation ; Wastewater treatment ; Farmers ; Biological contamination ; Food consumption ; WHO ; Sanitation ; Pathogens ; Income / Ghana / Accra
(Location: IWMI HQ Call no: IWMI Record No: H046611)
(869.97 KB)
This chapter presents approaches tested in Ghana to mitigate wastewater irrigation-related risks for consumers and farmers from microbial contamination. The recommended interventions follow the WHO approach concerning multiple barriers along the food chain. Factors that could support the uptake of safety measures are discussed.
18 Keraita, B.; Mateo-Sagasta Davila, Javier; Drechsel, Pay; Winkler, M.; Medlicott, K. 2015. Risk mitigation for wastewater irrigation systems in low-income countries: opportunities and limitations of the WHO guidelines. In Memon, F. A.; Ward, S. (Eds.). Alternative water supply systems. London, UK: IWA Publishing. pp.367-389.
Irrigation systems ; Wastewater irrigation ; Drip irrigation ; Sprinkler irrigation ; Risk management ; Developing countries ; Income ; WHO ; Guidelines ; Public health ; Health hazards ; Water quality ; Faecal coliforms ; Sedimentation ; Filtration ; Marketing / West Africa
(Location: IWMI HQ Call no: e-copy only Record No: H046780)
(0.69 MB)
19 Keraita, B.; Drechsel, Pay. 2015. Consumer perceptions of fruit and vegetable quality: certification and other options for safeguarding public health in West Africa. Colombo, Sri Lanka: International Water Management Institute (IWMI) 32p. (IWMI Working Paper 164) [doi: https://doi.org/10.5337/2015.215]
Wastewater irrigation ; Pesticides ; Contamination ; Legislation ; Urban areas ; Peri-urban areas ; Marketing techniques / West Africa / Ghana
(Location: IWMI HQ Call no: IWMI Record No: H047217)
(2 MB)
With increasing change of traditional diets, and the emergence of new supply and marketing chains, urban food consumers in low-income countries are faced with multiple food safety challenges, among which microbial contamination and pesticides are key concerns for fruits and vegetables sold on urban markets in West Africa. Although consumers have a genuine interest in healthy food, and are willing to pay premiums, their interpretation of food quality and risks deviates from scientific health risk assessments and does not translate into recommended risk mitigation behavior. To safeguard public health, alternative measures are needed to support consumers’ risk awareness and decision making. The review looked at common and less-common options to trigger and support behavioral change, including safety labeling (certification), corporate social responsibility models, incentive systems and social marketing of safe practices, to address potential food safety risks from farming in urban and peri-urban areas. Overall, it appears that regulatory measures for risk management, including certifications, will be – for now – less effective in the West African setup due to low educational levels in view of chemical and microbial risk, diverse and often informal food chains, poor safety supporting infrastructure and weak institutional capacities for compliance monitoring.
20 Drechsel, Pay; Keraita, B.. 2015. Agriculture in the rural-urban continuum: a CGIAR research perspective. Agriculture for Development, 26:14-19.
Urban agriculture ; Periurban agriculture ; Rural areas ; Peri urban areas ; Urban areas ; CGIAR ; Research institutions ; Food security ; Food supply ; Irrigated farming ; Urban wastes ; Water pollution ; Sanitation ; Ecosystem services ; Vegetables ; Environmental health / Ghana / Kumasi
(Location: IWMI HQ Call no: e-copy only Record No: H047347)
http://www.taa.org.uk/assets/pubs/Ag4Dev26%20_Winter_for_Web.pdf
https://vlibrary.iwmi.org/pdf/H047347.pdf
https://vlibrary.iwmi.org/pdf/H047347.pdf
(0.38 MB) (6.71 MB)
Thirsty and hungry cities are posing significant challenges for the urban-rural interface ranging from food security to inter-sectoral water allocation. Not only is the supply of resources to urban centres a growing challenge in low-income countries, but even more is the urban return flow, as investments in waste management and sanitation, ie the ‘ultimate food waste’, are not able to keep pace with population growth. And where polluted water is used in irrigation to feed the cities, food safety is becoming a crucial component of food security. Most affected by resource competition and pollution are the urban and peri-urban farming systems which are often driven by the informal sector. Urban waste is not only a challenge but also offers opportunities. It is in this interface between agriculture and sanitation where the CGIAR operates through its research programme on Water, Land and Ecosystems (WLE), addressing both the challenges and opportunities of urbanisation: by exploring novel perspectives and solutions to respond to changing population dynamics, resource demands, centralised water and nutrient flows, and ecosystem services under pressure.
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