Journal article
Effect of Anaerobic Digestion and Application Method on the Presence and Survivability of E. coli and Fecal Coliforms in Dairy Waste Applied to Soil
Water, Air, & Soil Pollution, Vol.223(3), pp.1055-1063
03/2012
Handle:
https://hdl.handle.net/2376/114300
Abstract
Animal wastes are commonly used in a sustainable manner to fertilize crops. However, manures contain numerous pathogenic bacteria that can impact animal and human health. Treatment of animal waste by anaerobic digestion has the potential to reduce pathogen loading to land. This study was conducted to determine the fate of bacteria applied in raw and anaerobically digested dairy slurries that were broadcast and subsurface applied in a field of forage grasses. Digested slurry had significantly fewer indicator bacteria, Escherichia coli and fecal coliform at time of application. Anaerobic digestion did not increase the survivability of indicator bacteria. Waste treatment and application method did not affect the rate of bacteria die-off. There were fewer E. coli and fecal coliform at the end of each trial in the soils that received digested slurry. Anaerobic digestion of dairy waste has the potential to reduce pathogenic bacteria loading to cropland.
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Details
- Title
- Effect of Anaerobic Digestion and Application Method on the Presence and Survivability of E. coli and Fecal Coliforms in Dairy Waste Applied to Soil
- Creators
- Olivia Saunders - Department of Crop and Soil Sciences Washington State University Pullman WA 99164 USAJoe Harrison - Department of Animal Sciences Washington State University 2606 West Pioneer Puyallup WA 98371 USAAnn Fortuna - Department of Crop and Soil Sciences Washington State University Pullman WA 99164 USAElizabeth Whitefield - Department of Animal Sciences Washington State University 2606 West Pioneer Puyallup WA 98371 USAAndy Bary - Department of Crop and Soil Sciences Washington State University Puyallup WA 98371 USA
- Publication Details
- Water, Air, & Soil Pollution, Vol.223(3), pp.1055-1063
- Academic Unit
- Animal Sciences, Department of
- Publisher
- Springer Netherlands; Dordrecht
- Identifiers
- 99900547578901842
- Language
- English
- Resource Type
- Journal article