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Background: Wastewater irrigation for vegetable production is a highly prevalent practice in Addis Ababa and a number of articles have been published on wastewater-irrigated soils and vegetables contaminated with heavy metals. However, to the best of our knowledge, an insight into assessment of h...


Woldetsadik, D.Drechsel, PayKeraita, Bernard N.Itanna, F.Gebrekidan, H.[Heavy metal accumulation and health risk assessment in wastewater-irrigated urban vegetable farming sites of Addis Ababa, Ethiopia]Heavy metal accumulation and health risk assessment in wastewater-irrigated urban vegetable farming sites of Addis Ababa, Ethiopia
Keraita, Bernard N.Drechsel, PayKonradsen, Flemming[Perceptions of farmers on health risks and risk reduction measures in wastewater-irrigated urban vegetable farming in Ghana]Perceptions of farmers on health risks and risk reduction measures in wastewater-irrigated urban vegetable farming in Ghana

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 inv...


Drechsel, PayKeraita, Bernard N.[Agriculture in the rural-urban continuum: a CGIAR research perspective]Agriculture in the rural-urban continuum: a CGIAR research perspective

Background: In Addis Ababa, where irrigation water for vegetable production is commonly derived from the highly polluted Akaki river, information on microbial contamination of water and irrigated vegetable is scanty. An assessment was done to determine the microbiological quality of irrigation wa...


Woldetsadik, D.Drechsel, PayKeraita, Bernard N.Itanna, F.Erko, B.Gebrekidan, H.[Microbiological quality of lettuce (Lactuca sativa) irrigated with wastewater in Addis Ababa, Ethiopia and effect of green salads washing methods]Microbiological quality of lettuce (Lactuca sativa) irrigated with wastewater in Addis Ababa, Ethiopia and effect of green salads washing methods

The use of wastewater to produce food crops particularly vegetables is very prevalent in Addis Ababa, Ethiopia. This practice may pose health risks to farm workers and consumers. Hence, the study was designed to evaluate farmers’ perceptions on irrigation water quality, health risks and health ri...


Woldetsadik, D.Drechsel, PayKeraita, Bernard N.Itanna, F.Gebrekidan, H.[Farmers’ perceptions on irrigation water contamination, health risks and risk management measures in prominent wastewater-irrigated vegetable farming sites of Addis Ababa, Ethiopia]Farmers’ perceptions on irrigation water contamination, health risks and risk management measures in prominent wastewater-irrigated vegetable farming sites of Addis Ababa, Ethiopia
Keraita, Bernard N.Drechsel, PayAmoah, Philip[Influence of urban wastewater on stream water quality and agriculture in and around Kumasi, Ghana]Influence of urban wastewater on stream water quality and agriculture in and around Kumasi, Ghana

To assess the efficiency of seven treatments including biochars produced from dried faecal matter and manures as stabilizing agents of cadmium (Cd)-spiked soils, lettuce was grown in glasshouse on two contrasting soils. The soils used were moderately fertile silty loam and less fertile sandy loam...


Woldetsadik, D.Drechsel, PayKeraita, Bernard N.Marschner, B.Itanna, F.Gebrekidan, H.[Effects of biochar and alkaline amendments on cadmium immobilization, selected nutrient and cadmium concentrations of lettuce (Lactuca sativa) in two contrasting soils]Effects of biochar and alkaline amendments on cadmium immobilization, selected nutrient and cadmium concentrations of lettuce (Lactuca sativa) in two contrasting soils

Irrigation water used for growing vegetables in urban areas in many low- income countries is contaminated with untreated wastewater. Many wastewater treatment methods are economically prohibitive and continued use of such irrigation water pose health risks for vegetable consumers and farmers. As ...


Keraita, Bernard N.Drechsel, PayKonradsen, FlemmingVreugdenhil, R.C.[Potential of simple filters to improve microbial quality of irrigation water used in urban vegetable farming in Ghana]Potential of simple filters to improve microbial quality of irrigation water used in urban vegetable farming in Ghana

Irrigation using untreated wastewater poses health risks to farmers and consumers of crop products, especially vegetables. With hardly any wastewater treatment in Ghana, a multiple-barrier approach was adopted and safe re-use practices were developed through action research involving a number of ...


Keraita, Bernard N.Abaidoo, R.C.Beernaerts, InesKoo-Oshima, SashaAmoah, PhilipDrechsel, PayKonradsen, Flemming[Safe re-use practices in wastewater-irrigated urban vegetable farming in Ghana]Safe re-use practices in wastewater-irrigated urban vegetable farming in Ghana
Keraita, Bernard N.Drechsel, PayKonradsen, FlemmingVreugdenhil, R.C.[Potential of simple filters to improve microbial quality of irrigation water used in urban vegetable farming in Ghana]Potential of simple filters to improve microbial quality of irrigation water used in urban vegetable farming in Ghana

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