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Pradhan, Surendra K.; Cofie, Olufunke; Nikiema, Josiane; Heinonen-Tanski, H. 2019. Fecal sludge derived products as fertilizer for lettuce cultivation in urban agriculture. Sustainability, 11(24):7101. [doi]
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Karg, H. 2018. Markets. In Karg, H.; Drechsel, Pay (Eds.). Atlas of West African urban food systems: examples from Ghana and Burkina Faso. Colombo, Sri Lanka: International Water Management Institute (IWMI). CGIAR Research Program on Water, Land and Ecosystems (WLE). pp.52-59.
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Woldetsadik, D.; Drechsel, Pay; Marschner, B.; Itanna, F.; Gebrekidan, H. 2017. Effect of biochar derived from faecal matter on yield and nutrient content of lettuce (Lactuca sativa) in two contrasting soils. Environmental Systems Research, 6(1):1-12. [doi]
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Woldetsadik, D.; Drechsel, Pay; Keraita, B.; Itanna, F.; Erko, B.; Gebrekidan, H. 2017. Microbiological quality of lettuce (Lactuca sativa) irrigated with wastewater in Addis Ababa, Ethiopia and effect of green salads washing methods. International Journal of Food Contamination, 4:1-9. [doi]
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Woldetsadik, D.; Drechsel, Pay; Keraita, B.; Marschner, B.; Itanna, F.; Gebrekidan, H. 2016. Effects of biochar and alkaline amendments on cadmium immobilization, selected nutrient and cadmium concentrations of lettuce (Lactuca sativa) in two contrasting soils. SpringerPlus, 5:1-16. [doi]
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Amoah, Philip; Lente, I.; Asem-Hiablie, S.; Abaidoo, R. C. 2014. Quality of vegetables in Ghanaian urban farms and markets. 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.89-103.
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Henseler, M.; Amoah, Philip. 2014. Marketing channels for irrigated exotic vegetables. 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.51-61.
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Keraita, Bernard; Amoah, Philip. 2011. Fecal exposure pathways in Accra: a literature review with specific focus on IWMI’s work on wastewater irrigated agriculture. Report submitted to the Centre for Global Safe Water, Emory University, Atlanta, USA. Accra, Ghana: International Water Management Institute (IWMI). 43p.
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Seidu, R.; Drechsel, Pay. 2011. Analyse cout-efficacite des interventions pour reduire les maladies diarrheiques chez les consommateurs de laitues irriguees avec des eaux usees au Ghana. In French. [Cost-effectiveness analysis of interventions for diarrhoeal disease reduction among consumers of wastewater-irrigated lettuce in Ghana] In Drechsel, Pay; Scott, C. A.; Raschid-Sally, Liqa; Redwood, M.; Bahri, Akissa. L’irrigation avec des eaux usees et la sante: evaluer et attenuer les risques dans les pays a faible revenu. Colombo, Sri Lanka: International Water Management Institute (IWMI); Ottawa, Canada: International Development Research Centre (IDRC); Quebec, Canada: University of Quebec. pp.281-305. (Also in English).
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Amponsah-Doku, F.; Obiri-Danso, K.; Abaidoo, R. C.; Andoh, L. A.; Drechsel, Pay; Kondrasen, F. 2010. Bacterial contamination of lettuce and associated risk factors at production sites, markets and street food restaurants in urban and peri-urban Kumasi, Ghana. Scientific Research and Essays, 5(2):217-223.
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Seidu, R.; Drechsel, Pay. 2010. Cost-effectiveness analysis of interventions for diarrhoeal disease reduction among consumers of wastewater-irrigated lettuce in Ghana. In Drechsel, Pay; Scott, C. A.; Raschid-Sally, Liqa; Redwood, M.; Bahri, Akissa (Eds.). Wastewater irrigation and health: assessing and mitigating risk in low-income countries. London, UK: Earthscan; Ottawa, Canada: International Development Research Centre (IDRC); Colombo, Sri Lanka: International Water Management Institute (IWMI). pp.261-283. (Also in French).
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Amoah, Philip. 2009. An analysis of the quality of wastewater used to irrigate vegetables in Accra, Kumasi and Tamale, Ghana. In Redwood, M. (Ed.). Agriculture in urban planning: generating livelihood and food security. London, UK: Earthscan. pp.105-124.
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Amoah, Philip. 2008. Wastewater irrigated vegetable production: contamination pathway for health risk reduction in Accra, Kumasi and Tamale, Ghana. Thesis submitted to the Department of Theoretical and Applied Biology, Kwame Nkrumah University of Science and Technology (KNUST) in partial fulfillment of the requirements for the Degree of Doctor of Philosophy, Faculty of Science. 202p.
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Amoah, Philip. 2008. Irrigated urban vegetable production in Ghana: sources of pathogen contamination and risk elimination. In Parrot, L.; Njoya, A.; Temple, L.; Assogba-Komlan, F.; Kahane, R.; Ba Diao, M.; Havard, M. (Eds.). Agriculture and urban development in Sub-Saharan Africa: environment and health issues. Paris, France: L'Harmattan. pp.123-132. (Collection Ethique Economique)
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Seidu, R.; Heistad, A.; Amoah, Philip; Drechsel, Pay; Jenssen, P. D.; Stenstrom, T. A. 2008. Quantification of the health risk associated with wastewater reuse in Accra, Ghana: a contribution toward local guidelines. Journal of Water and Health, 6(4):461-471. [doi]
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Amoah, Philip; Drechsel, Pay; Abaidoo, R. C.; Henseler, M. 2007. Irrigated urban vegetable production in Ghana: microbiological contamination in farms and markets and associated consumer risk groups. Journal of Water and Health, 5(3):455-466. [doi]
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Keraita, Bernard; Konradsen, F.; Drechsel, Pay; Abaidoo, R. C. 2007. Effect of low-cost irrigation methods on microbial contamination of lettuce irrigated with untreated wastewater. Tropical Medicine and International Health, 12(Suppl. 2):15-22.
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Keraita, Bernard; Konradsen, F.; Drechsel, Pay; Abaidoo, R. C. 2007. Reducing microbial contamination on wastewater-irrigated lettuce by cessation of irrigation before harvesting. Tropical Medicine and International Health, 12(Suppl. 2):7-13.
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Obuobie, Emmanuel; Keraita, Bernard; Danso, George; Amoah, Philip; Cofie, Olufunke O.; Raschid-Sally, Liqa; Drechsel, Pay. 2006. Irrigated urban vegetable production in Ghana: characteristics, benefits and risks. Accra, Ghana: International Water Management Institute (IWMI); Accra, Ghana: Network of Resource Centres on Urban Agriculture and Food Security (RUAF); Colombo, Sri Lanka: CGIAR Challenge Program on Water and Food (CPWF). 150p.
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Amoah, Philip; Drechsel, Pay; Abaidoo, R. C. 2005. Irrigated urban vegetable production in Ghana: sources of pathogen contamination and health risk elimination. Irrigation and Drainage, 54(Supplement 1):S49-S61.
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