PN51 - Wastewater Irrigation Opportunities and Risks
Permanent URI for this collectionhttps://hdl.handle.net/10568/17013
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Item Improving food safety in Africa: Training for caterers(Video, 2007) International Water Management Institute; Kwame Nkrumah University of Science and Technology; University of Development Studies; University of CopenhagenItem Andam calls for effective dialogue to support research and development efforts(Press Item, 2005-01-18) Andam, KwesiItem Bacterial contamination of lettuce and associated risk factors at production sites markets and street food restaurants in urban and peri-urban Kumasi Ghana(Journal Article, 2010) Amponsah-Doku, F.; Obiri-Danso, K.; Abaidoo, Robert C.; Andoh, L.A.; Drechsel, Pay; Konradsen, FlemmingItem Gyinyase organic vegetable growers' association in Kumasi Ghana(Newsletter, 2007) Kwame Boateng, O.; Keraita, Bernard N.; Akple, Maxwell Selase KwasiItem Stakeholder perceptions of environmental health risks in wastewater irrigation among communities in urban and peri-urban Kumasi Ghana(Conference Paper, 2006-11-12) Gane, J.; Bakang, J.A.; Takyi, H.; Obiri-Danso, K.; Abaidoo, Robert C.; Samuelson, H.; Konradsen, FlemmingItem Participant observation of food hygiene and food safety practices in catering enterprises in Kumasi Ghana(Thesis, 2006) Poluektovas, V.Item Keeping up appearances: Perceptions of street food safety in urban Kumasi Ghana(Journal Article, 2008-11) Rheinlander, T.; Olsen, M.; Abubakar Bakang, J.; Takyi, H.; Konradsen, Flemming; Samuelsen, H.Item Using on-farm sedimentation ponds to improve microbial quality of irrigation water in urban vegetable farming in Ghana(Journal Article, 2008-03-01) Keraita, Bernard N.; Drechsel, Pay; Konradsen, FlemmingThis paper presents an assessment of the potential of using on-farm ponds to reduce levels of microbial contamination in wastewater -contaminated irrigation water. The study involved observations on the use of ponds in urban agriculture in Kumasi, Ghana, and more than 300 irrigation water samples were taken for physico-chemical and microbial laboratory analysis. The study shows that while on-farm ponds are commonly used, their potential to remove pathogens through sedimentation has not been fully optimized. Two-thirds of helminth eggs were in the sediments and careful collection of irrigation water without disturbing sediments reduced helminth eggs in irrigation water by about 70%. Helminth eggs reduced from about 5 to less than 1 egg per litre in three days in both dry and wet seasons while thermotolerant coliforms took six days in the dry season to reduce from about 8 to 4 log units per 100 ml, to meet the WHO guidelines. For optimal pathogen removal, better pond designs, farmers’ training on collection of water with minimal disturbance and any other means to enhance sedimentation and pathogen die-off can be essential components of a multiple-barrier approach complementing farm-based measures like simple filtration techniques, better irrigation methods and post-harvest contamination.Item Perceptions of farmers on health risks and risk reduction measures in wastewater-irrigated urban vegetable farming in Ghana(Journal Article, 2008-12) Keraita, Bernard N.; Drechsel, Pay; Konradsen, FlemmingItem Street food quality: A matter of neatness and trust(Thesis, 2006) Rheinlander, T.Item Safer options for irrigated urban farming(Newsletter, 2007) Keraita, Bernard N.; Drechsel, Pay; Konradsen, FlemmingItem Two new ‘Farm to Fork’ contamination investigations in Ghana(Newsletter, 2005) International Water Management InstituteItem Potential of simple filters to improve microbial quality of irrigation water used in urban vegetable farming in Ghana(Journal Article, 2008-04-29) Keraita, Bernard N.; Drechsel, Pay; Konradsen, Flemming; Vreugdenhil, R.C.Item Risk awareness of street food handlers and consumers: A qualitative study of practices and perceptions related to fresh vegetable consumption in street food stands in Kumasi Ghana(Conference Paper, 2006) University of Copenhagen; Kwame Nkrumah University of Science and Technology; International Water Management InstituteItem Safeguarding public health from farm to fork(Brochure, 2005) International Water Management Institute; CGIAR Challenge Program on Water and FoodItem Safe food despite wastewater irrigation: A knowledge sharing approach(Poster, 2009) Amoah, Philip; Schuetz, TonyaItem Irrigated urban vegetable production in Ghana: Characteristics benefits and risks(Book, 2006) Obuobie, Emmanuel; Keraita, Bernard N.; Danso, George K.; Amoah, Philip; Cofie, Olufunke O.; Raschid-Sally, Liqa; Drechsel, Pay