Phosphorus availability of a French thermally conditioned sewage sludge assessed by isotopic labeling techniques
| hal.structure.identifier | Laboratoire des Radio Isotopes [LRI] | |
| dc.contributor.author | ANDRIAMANANJARA, Andry | |
| hal.structure.identifier | Laboratoire des Radio Isotopes [LRI] | |
| dc.contributor.author | RABEHARISOA, Lilia | |
| hal.structure.identifier | Interactions Sol Plante Atmosphère [UMR ISPA] | |
| dc.contributor.author | PRUD'HOMME, Loïc | |
| hal.structure.identifier | Interactions Sol Plante Atmosphère [UMR ISPA] | |
| dc.contributor.author | MOREL, Christian | |
| dc.date.accessioned | 2024-04-08T11:55:56Z | |
| dc.date.available | 2024-04-08T11:55:56Z | |
| dc.date.issued | 2014 | |
| dc.date.conference | 2014-09-01 | |
| dc.identifier.uri | https://oskar-bordeaux.fr/handle/20.500.12278/195720 | |
| dc.description.abstractEn | Phosphorus in urban sewage sludge is a potential source of P for agriculture if it is plant-available. In that case it could be an alternative to mineral P fertilizers known as non renewable source. However, to manage TCSS it is necessary to have an accurate assessment of its P fertilizing value. This work aimed to assess and compare the plant availability of P in TCSS and triple superphosphate (TSP). A pot experiment with a mixture of ryegrass and fescue was carried out for 2 months on a P-deficient and slightly acidic soil in which 50 mgP.kg–1 was applied as TSP and TCSS. The 32P–labeling of soil P was used to accurately quantify the P taken up by plants from the different P sources and to evaluate interactions after applying P-TCSS on P taken up from soil. In parallel, soil incubations were conducted on the same treatments to analyze soil respiration and soil microbial dynamics. In comparison to the control (no P applied), shoot and root biomass productions, and plant P nutrition increased with TSP and TCSS application. The contribution of TCSS and TSP to plant nutrition was 55.2% and 55.7%, respectively and the relative agronomic effectiveness of TCSS was 64%. This decrease is explained by the carbon associated with the 50 mgP.kg-1 applied to soil. This carbon initiates a priming-effect with a high microbial activity marked by high soil respiration and high P content in microbial biomass which competed for plant-available P and delayed the root and shoot growth. As a consequence, P taken up from soil and TCSS decreased both. In conclusion, this study shows that it is possible to substitute TSP by TCSS. | |
| dc.language.iso | en | |
| dc.title.en | Phosphorus availability of a French thermally conditioned sewage sludge assessed by isotopic labeling techniques | |
| dc.type | Autre communication scientifique (congrès sans actes - poster - séminaire...) | |
| dc.subject.hal | Sciences de l'environnement/Environnement et Société | |
| dc.subject.hal | Sciences du Vivant [q-bio]/Sciences agricoles | |
| bordeaux.hal.laboratories | Interactions Soil Plant Atmosphere (ISPA) - UMR 1391 | * |
| bordeaux.institution | Bordeaux Sciences Agro | |
| bordeaux.institution | INRAE | |
| bordeaux.conference.title | 4th Sustainable Phosphorus Summit SPS 2014 | |
| bordeaux.country | FR | |
| bordeaux.conference.city | Montpellier | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-02793930 | |
| hal.version | 1 | |
| hal.invited | non | |
| hal.conference.end | 2014-09-03 | |
| hal.popular | non | |
| hal.audience | Nationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-02793930v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.date=2014&rft.au=ANDRIAMANANJARA,%20Andry&RABEHARISOA,%20Lilia&PRUD'HOMME,%20Lo%C3%AFc&MOREL,%20Christian&rft.genre=conference |
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