Monitoring the variation of soil quality with sewage sludge application rates in absence of rhizosphere effect
Agricultural soils in semi-arid regions have frequently been degraded due to adverse climatic conditions, organic matter depletion, and poor farming practices. To enhance soil quality, this study examines the reuse of sewage sludge (SS) as an available source of organic matter in a typical Mediterra...
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2020
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| Online Access: | http://dx.doi.org/10.1016/j.iswcr.2020.07.007 https://www.sciencedirect.com/science/article/pii/S2095633920300526 http://hdl.handle.net/10576/48435 |
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| _version_ | 1857415085272596480 |
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| author | Rahma Inès, Zoghlami |
| author2 | Hamdi, Helmi Mokni-Tlili, Sonia Hechmi, Sarra Khelil, Mohamed Naceur Ben Aissa, Nadhira Moussa, Mohamed Bousnina, Habib Benzarti, Saoussen Jedidi, Naceur |
| author2_role | author author author author author author author author author |
| author_facet | Rahma Inès, Zoghlami Hamdi, Helmi Mokni-Tlili, Sonia Hechmi, Sarra Khelil, Mohamed Naceur Ben Aissa, Nadhira Moussa, Mohamed Bousnina, Habib Benzarti, Saoussen Jedidi, Naceur |
| author_role | author |
| dc.creator.none.fl_str_mv | Rahma Inès, Zoghlami Hamdi, Helmi Mokni-Tlili, Sonia Hechmi, Sarra Khelil, Mohamed Naceur Ben Aissa, Nadhira Moussa, Mohamed Bousnina, Habib Benzarti, Saoussen Jedidi, Naceur |
| dc.date.none.fl_str_mv | 2020-09-30 2023-10-11T08:21:11Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | http://dx.doi.org/10.1016/j.iswcr.2020.07.007 20956339 https://www.sciencedirect.com/science/article/pii/S2095633920300526 http://hdl.handle.net/10576/48435 245-252 3 8 2589-059X |
| dc.language.none.fl_str_mv | en |
| dc.publisher.none.fl_str_mv | Elsevier |
| dc.rights.none.fl_str_mv | http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Sandy loam soil Urban sewage sludge Structural stability Soil degradation Aggregation Magnetic susceptibility |
| dc.title.none.fl_str_mv | Monitoring the variation of soil quality with sewage sludge application rates in absence of rhizosphere effect |
| dc.type.none.fl_str_mv | Article info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
| description | Agricultural soils in semi-arid regions have frequently been degraded due to adverse climatic conditions, organic matter depletion, and poor farming practices. To enhance soil quality, this study examines the reuse of sewage sludge (SS) as an available source of organic matter in a typical Mediterranean sandy-loam soil. Accordingly, we studied the cumulative effect of two annual applications of 40, 80 and 120 tons of sludge per ha on soil quality in absence of vegetation. The dose-dependent improvement of organic matter content was the most significant event that reflected sludge application rates, and consequently influenced other soil properties. Accordingly, soil structural stability increased by 13.3%, 28.8% and 59.4% for treatments SS-40, SS-80 and SS-120 respectively as compared to unamended control. Structural stability improvement was also confirmed by the dose-dependent variation of other edaphic factors including calcium content, the microbial quotient as well as Welt and C:N ratios. These parameters are involved in cementing soil aggregates by cation bridging, the formation of microbial mucilage, and clay-humic complexes. Soil magnetic susceptibility (SMS) was measured in situ as a possible rapid tool to evaluate soil condition. SMS showed significant correlation with sludge dose and stability amelioration testifying to the aggregation role that can play Al2O3 and particularly Fe2O3 minerals added by the hematite-rich sludge. Besides, analytical results and field observations revealed no trends of soil salinization or acidification by excessive sludge amounts. By avoiding the rhizosphere effect, outcomes could reflect the resilience and intrinsic capacity of the soil to cope with excessive sludge loads. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | qu_a7a440bbae0482aaaeeed30e0440eaaa |
| identifier_str_mv | 20956339 245-252 3 8 2589-059X |
| language_invalid_str_mv | en |
| network_acronym_str | qu |
| network_name_str | Qatar University repository |
| oai_identifier_str | oai:qspace.qu.edu.qa:10576/48435 |
| publishDate | 2020 |
| publisher.none.fl_str_mv | Elsevier |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | http://creativecommons.org/licenses/by-nc-nd/4.0/ |
| spelling | Monitoring the variation of soil quality with sewage sludge application rates in absence of rhizosphere effectRahma Inès, ZoghlamiHamdi, HelmiMokni-Tlili, SoniaHechmi, SarraKhelil, Mohamed NaceurBen Aissa, NadhiraMoussa, MohamedBousnina, HabibBenzarti, SaoussenJedidi, NaceurSandy loam soilUrban sewage sludgeStructural stabilitySoil degradationAggregationMagnetic susceptibilityAgricultural soils in semi-arid regions have frequently been degraded due to adverse climatic conditions, organic matter depletion, and poor farming practices. To enhance soil quality, this study examines the reuse of sewage sludge (SS) as an available source of organic matter in a typical Mediterranean sandy-loam soil. Accordingly, we studied the cumulative effect of two annual applications of 40, 80 and 120 tons of sludge per ha on soil quality in absence of vegetation. The dose-dependent improvement of organic matter content was the most significant event that reflected sludge application rates, and consequently influenced other soil properties. Accordingly, soil structural stability increased by 13.3%, 28.8% and 59.4% for treatments SS-40, SS-80 and SS-120 respectively as compared to unamended control. Structural stability improvement was also confirmed by the dose-dependent variation of other edaphic factors including calcium content, the microbial quotient as well as Welt and C:N ratios. These parameters are involved in cementing soil aggregates by cation bridging, the formation of microbial mucilage, and clay-humic complexes. Soil magnetic susceptibility (SMS) was measured in situ as a possible rapid tool to evaluate soil condition. SMS showed significant correlation with sludge dose and stability amelioration testifying to the aggregation role that can play Al2O3 and particularly Fe2O3 minerals added by the hematite-rich sludge. Besides, analytical results and field observations revealed no trends of soil salinization or acidification by excessive sludge amounts. By avoiding the rhizosphere effect, outcomes could reflect the resilience and intrinsic capacity of the soil to cope with excessive sludge loads.This study was financially supported by a research grant from the Tunisian Ministry of Higher Education and Scientific Research. The authors would like to thank the National Sanitation Utility (ONAS) for providing urban sewage sludge. The technical support of Rym Ghrib is hereby acknowledged.Elsevier2023-10-11T08:21:11Z2020-09-30Articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://dx.doi.org/10.1016/j.iswcr.2020.07.00720956339https://www.sciencedirect.com/science/article/pii/S2095633920300526http://hdl.handle.net/10576/48435245-252382589-059Xenhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:qspace.qu.edu.qa:10576/484352024-07-23T15:51:41Z |
| spellingShingle | Monitoring the variation of soil quality with sewage sludge application rates in absence of rhizosphere effect Rahma Inès, Zoghlami Sandy loam soil Urban sewage sludge Structural stability Soil degradation Aggregation Magnetic susceptibility |
| status_str | publishedVersion |
| title | Monitoring the variation of soil quality with sewage sludge application rates in absence of rhizosphere effect |
| title_full | Monitoring the variation of soil quality with sewage sludge application rates in absence of rhizosphere effect |
| title_fullStr | Monitoring the variation of soil quality with sewage sludge application rates in absence of rhizosphere effect |
| title_full_unstemmed | Monitoring the variation of soil quality with sewage sludge application rates in absence of rhizosphere effect |
| title_short | Monitoring the variation of soil quality with sewage sludge application rates in absence of rhizosphere effect |
| title_sort | Monitoring the variation of soil quality with sewage sludge application rates in absence of rhizosphere effect |
| topic | Sandy loam soil Urban sewage sludge Structural stability Soil degradation Aggregation Magnetic susceptibility |
| url | http://dx.doi.org/10.1016/j.iswcr.2020.07.007 https://www.sciencedirect.com/science/article/pii/S2095633920300526 http://hdl.handle.net/10576/48435 |