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DC Field | Value | Language |
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dc.contributor.author | Hooria Ikram Raja | - |
dc.date.accessioned | 2023-11-23T07:58:38Z | - |
dc.date.accessioned | 2023-11-23T07:58:46Z | - |
dc.date.available | 2023-11-23T07:58:38Z | - |
dc.date.available | 2023-11-23T07:58:46Z | - |
dc.date.issued | 2022 | - |
dc.identifier.uri | http://hdl.handle.net/123456789/27685 | - |
dc.description.abstract | Contamination of the soil and environment with chlorpyrifos and its metabolites is a serious environmental problem. Its inability to dissolve in water makes it exist in the soil for a longer period. Different soil textures have different rates of degrading chlorpyrifos. So, there is an urgent need to develop a strategy to remove chlorpyrifos for improving environmental health and assess which soil texture supports enhanced degradation in a sustainable way. Therefore, the current study was designed to find out the potential application of bio-augmentation and organic amendments for chlorpyrifos degradation. The wheat plant was inoculated with two different chlorpyrifos degrading bacterial strains named Pseudomonas aeruginosa and Bacillus Vietnamensis. Compost and biochar were used as organic amendments. Results of this study indicated that the treatment SS+B+P+B2 showed the highest chlorpyrifos degradation in sandy loam soil (75.8%) than in clayey soil (55.5%). Plant growth and development were significantly improved in sandy loam soil than in clayey soil. The maximum shoot length, fresh weight and dry weight in sandy loam soil was 41.1cm, 7.9g, and 3.6g respectively, while in case of clayey soil, the values were 38.1cm, 6.3g, and 1.7g respectively. The maximum root length, fresh weight and dry weight in sandy loam soil was 48.7cm, 10.1g and 6.4g respectively, while in clayey soil, the values were 32.3cm, 9.5g and 6.4g respectively. Changes in biochemical stress indicators depicted significantly reduced MDA and H2O2 content with increased Chlorophyll a, b, Total chlorophyll, and Carotenoid content along with a decline in plant antioxidant enzyme levels for ascorbate peroxidase, catalase, superoxide dismutase, and guaiacol peroxidase. Improved plant growth and the rhizospheric microbial count were also detected in the treatment SS+C+P+B2 of both the soils but the values were different as sandy loam soil (8.47*107 ) had more microbial count in comparison to clayey soil (4.10*105 ). There are no such studies that focused on the integration of these techniques for chlorpyrifos degradation in the rhizosphere of Triticum aestivum. Integrated bio-augmentation and organic amendment approach have a great potential for rhizoremediation of chlorpyrifos rather than a single biological method. Key words: Biochar, Chlorpyrifos, Compost, Phytoremediation, Triticum aestivum | en_US |
dc.language.iso | en | en_US |
dc.publisher | Quaid I Azam university Islamabad | en_US |
dc.subject | Environmental Sciences | en_US |
dc.title | Comparative Study of Soil Textures to Assess the Effect of Bacterial Augmentation and Organic Amendments on Degradation of Chlorpyrifos in Soil | en_US |
dc.type | Thesis | en_US |
Appears in Collections: | M.Phil M.Phil |
Files in This Item:
File | Description | Size | Format | |
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BIO 7073.pdf | BIO 7073 | 1.26 MB | Adobe PDF | View/Open |
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