Citation
Kasing A., . and Ling T.Y., . and Alvina L.M., . (2002) Survival of an indicator bacteria in soil : effect of temperature and moisture. [Proceedings Paper]
Abstract
Soil is a natural digestion system for the animal waste. However land disposal sites and agricultural land pose serious threat to the quality surface groundwater. In this study a clay loam from Sarawak was inoculated with wild strain E. coli isolated from animal waste. Results indicated that first order decay rate increased as temperature increased from 25 C to 35 C and as moisture decreased from saturation to air-dry. Lag period of the bacteria was found to be the longest 8 days in saturated soil at 25 C and the shortest 1 day in air-dry soil at 35 C. Interaction between temperature and moisture was significant. First order clay model can be used after lag period to estimate E. coli decay. It fit the data the best in cool wet condition. It is recommended that disposal of animal waste be carried out during hot dry season of the year.
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Abstract
Soil is a natural digestion system for the animal waste. However land disposal sites and agricultural land pose serious threat to the quality surface groundwater. In this study a clay loam from Sarawak was inoculated with wild strain E. coli isolated from animal waste. Results indicated that first order decay rate increased as temperature increased from 25 C to 35 C and as moisture decreased from saturation to air-dry. Lag period of the bacteria was found to be the longest 8 days in saturated soil at 25 C and the shortest 1 day in air-dry soil at 35 C. Interaction between temperature and moisture was significant. First order clay model can be used after lag period to estimate E. coli decay. It fit the data the best in cool wet condition. It is recommended that disposal of animal waste be carried out during hot dry season of the year.
Additional Metadata
| Item Type: | Proceedings Paper |
|---|---|
| Additional Information: | Available at Perpustakaan Sultan Abdul Samad Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia. mal S590.2 M239 2002 Call Number |
| AGROVOC Term: | BACTERIA |
| AGROVOC Term: | SOIL |
| AGROVOC Term: | TEMPERATURE |
| AGROVOC Term: | MOISTURE CONTENT |
| AGROVOC Term: | GROUNDWATER |
| AGROVOC Term: | STATISTICAL METHODS |
| AGROVOC Term: | CLAY SOILS |
| AGROVOC Term: | MALAYSIA |
| Geographical Term: | MALAYSIA |
| Depositing User: | Ms. Norfaezah Khomsan |
| Last Modified: | 24 Apr 2025 05:26 |
| URI: | http://webagris.upm.edu.my/id/eprint/15534 |
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