Citation
Achberger E. C., . and Bengtson R. L., . and Sabbagh G. J., . and Ling T. Y., . and Drapcho C. M., . and Jackson J., . (2005) Modelling Escherichia coli density on land and concentration in surface runoff. [Proceedings Paper]
Abstract
Integrated farming of crop and animal enables resources from animal waste to be utilized. However bacterial pollution is a concern. In this study a bacterial model ECOLI was developed to simulate E. coli density on land daily and the concentration in surface runoff. Loss of E. coli was assumed to occur through decay runoff sediment and percolation. E. coli decay was assumed to follow the first order decay affected by soil pH soil temperature and soil moisture. In testing the model the ECOLI model was interfaced with GLEAMS-SWT hydrologic and erosion model. Calibration and evaluation was performed with field- scale data from Franklinton Louisiana. Fresh cow manure was applied on grassed plots and runoff was collected and analyzed. Predicted E. coli concentrations versus observed E. coli concentrations in surface runoff gave a regression line with coefficient of determination of 0.993 intercept of 0.011 and a slope of 0.995 indicating good agreement of model predicted concentrations with observed concentrations. The ECOLI model can be used to study the effects of various animal waste application practices such as waste loading rate timing of application and frequency of application. More research needs to be conducted to incorporate databases and also expand the capabilities of this model.
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Official URL: http://myagric.upm.edu.my/id/eprint/16109
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Abstract
Integrated farming of crop and animal enables resources from animal waste to be utilized. However bacterial pollution is a concern. In this study a bacterial model ECOLI was developed to simulate E. coli density on land daily and the concentration in surface runoff. Loss of E. coli was assumed to occur through decay runoff sediment and percolation. E. coli decay was assumed to follow the first order decay affected by soil pH soil temperature and soil moisture. In testing the model the ECOLI model was interfaced with GLEAMS-SWT hydrologic and erosion model. Calibration and evaluation was performed with field- scale data from Franklinton Louisiana. Fresh cow manure was applied on grassed plots and runoff was collected and analyzed. Predicted E. coli concentrations versus observed E. coli concentrations in surface runoff gave a regression line with coefficient of determination of 0.993 intercept of 0.011 and a slope of 0.995 indicating good agreement of model predicted concentrations with observed concentrations. The ECOLI model can be used to study the effects of various animal waste application practices such as waste loading rate timing of application and frequency of application. More research needs to be conducted to incorporate databases and also expand the capabilities of this model.
Additional Metadata
| Item Type: | Proceedings Paper |
|---|---|
| AGROVOC Term: | Escherichia coli |
| AGROVOC Term: | Bacterial diseases |
| AGROVOC Term: | Animal manures |
| AGROVOC Term: | Agricultural land |
| AGROVOC Term: | Data analysis |
| AGROVOC Term: | Experimentation |
| AGROVOC Term: | Sampling |
| AGROVOC Term: | Evaluation |
| AGROVOC Term: | Soil moisture |
| AGROVOC Term: | Wastes |
| Geographical Term: | MALAYSIA |
| Depositing User: | Ms. Suzila Mohamad Kasim |
| Last Modified: | 24 Apr 2025 05:16 |
| URI: | http://webagris.upm.edu.my/id/eprint/13409 |
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