Using on-farm sedimentation ponds to improve microbial quality of irrigation water in urban vegetable farming in Ghana

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Using on-farm sedimentation ponds to improve microbial quality of irrigation water in urban vegetable farming in Ghana. / Keraita, Bernard; Drechsel, P.; Konradsen, Flemming.

I: Water Science and Technology, Bind 57, Nr. 4, 2008, s. 519-525.

Publikation: Bidrag til tidsskriftTidsskriftartikelfagfællebedømt

Harvard

Keraita, B, Drechsel, P & Konradsen, F 2008, 'Using on-farm sedimentation ponds to improve microbial quality of irrigation water in urban vegetable farming in Ghana', Water Science and Technology, bind 57, nr. 4, s. 519-525. https://doi.org/10.2166/wst.2008.166

APA

Keraita, B., Drechsel, P., & Konradsen, F. (2008). Using on-farm sedimentation ponds to improve microbial quality of irrigation water in urban vegetable farming in Ghana. Water Science and Technology, 57(4), 519-525. https://doi.org/10.2166/wst.2008.166

Vancouver

Keraita B, Drechsel P, Konradsen F. Using on-farm sedimentation ponds to improve microbial quality of irrigation water in urban vegetable farming in Ghana. Water Science and Technology. 2008;57(4):519-525. https://doi.org/10.2166/wst.2008.166

Author

Keraita, Bernard ; Drechsel, P. ; Konradsen, Flemming. / Using on-farm sedimentation ponds to improve microbial quality of irrigation water in urban vegetable farming in Ghana. I: Water Science and Technology. 2008 ; Bind 57, Nr. 4. s. 519-525.

Bibtex

@article{5db2acc0ec5c11ddbf70000ea68e967b,
title = "Using on-farm sedimentation ponds to improve microbial quality of irrigation water in urban vegetable farming in Ghana",
abstract = "This 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.",
author = "Bernard Keraita and P. Drechsel and Flemming Konradsen",
note = "Keywords: Agriculture; Animals; Enterobacteriaceae; Geologic Sediments; Ghana; Helminths; Parasite Egg Count; Vegetables; Waste Disposal, Fluid; Water; Water Supply",
year = "2008",
doi = "10.2166/wst.2008.166",
language = "English",
volume = "57",
pages = "519--525",
journal = "Water Science and Technology",
issn = "0273-1223",
publisher = "I W A Publishing",
number = "4",

}

RIS

TY - JOUR

T1 - Using on-farm sedimentation ponds to improve microbial quality of irrigation water in urban vegetable farming in Ghana

AU - Keraita, Bernard

AU - Drechsel, P.

AU - Konradsen, Flemming

N1 - Keywords: Agriculture; Animals; Enterobacteriaceae; Geologic Sediments; Ghana; Helminths; Parasite Egg Count; Vegetables; Waste Disposal, Fluid; Water; Water Supply

PY - 2008

Y1 - 2008

N2 - This 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.

AB - This 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.

U2 - 10.2166/wst.2008.166

DO - 10.2166/wst.2008.166

M3 - Journal article

C2 - 18359990

VL - 57

SP - 519

EP - 525

JO - Water Science and Technology

JF - Water Science and Technology

SN - 0273-1223

IS - 4

ER -

ID: 9950282