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Phosphorus in manures and other organic products: what limits proper recycling of this resource in agriculture?

hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorPELLERIN, Sylvain
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorMOREL, Christian
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorNESME, Thomas
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorRINGEVAL, Bruno
dc.date.accessioned2024-04-08T11:59:56Z
dc.date.available2024-04-08T11:59:56Z
dc.date.issued2014
dc.date.conference2014-09-01
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/196036
dc.description.abstractEnPhosphorus (P) in animal manures represents approximately 17 Tg P year-1, which is slightly more than the amount of P contained in mineral fertilizers used worldwide (14 Tg P year-1). Manures are generally spread on agricultural soils, so that it can be considered that P (and other elements) contained in these materials are recycled. However, there are several factors limiting an optimal recycling of this P resource. The aim of this communication is to discuss these barriers. Manures are effective sources of P to compensate P exports over a crop rotation, provided background soil test P is adequate. When soil P availability is critical, the short-term P availability of any organic material applied as a fertilizer becomes an issue. Questions remain about the short-term bioavailability of P supplied by organic products, depending on the overall composition of the biosolid (C/N/P ratio especially) and onP chemical forms. Because of this uncertainty, the amount of P supplied by organic products is often underestimated by farmers, and the need for additional mineral P fertilizers is overestimated. The N to P ratio of many organic products is lower than the N to P ratio characterizing crop requirements, so that a N based fertilization strategy results in an over-application of P and a low efficiency of manure P utilization. Last but not least, an optimal recycling of P and other nutrients contained in manures is increasingly constrained by the current trend towards specialization and geographical segregation of arable and livestock farms. The technical and organizational innovations that could overcome these barriers will be presented.
dc.language.isoen
dc.subjectphosphore organique
dc.subjectrecyclage de déchets
dc.subjectengrais
dc.title.enPhosphorus in manures and other organic products: what limits proper recycling of this resource in agriculture?
dc.typeCommunication dans un congrès
dc.subject.halSciences du Vivant [q-bio]/Sciences agricoles
dc.subject.halSciences de l'environnement/Environnement et Société
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.conference.title4th Sustainable phosphorus summit
bordeaux.countryFR
bordeaux.conference.cityMontpellier
bordeaux.peerReviewedoui
hal.identifierhal-02739015
hal.version1
hal.invitedoui
hal.conference.organizerCentre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD). FRA.
hal.conference.end2014-09-03
hal.popularnon
hal.audienceNationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02739015v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.date=2014&rft.au=PELLERIN,%20Sylvain&MOREL,%20Christian&NESME,%20Thomas&RINGEVAL,%20Bruno&rft.genre=unknown


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