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hal.structure.identifierCentre Technique Interprofessionnel des Fruits et Légumes [CTIFL]
dc.contributor.authorRAYNAL, C.
hal.structure.identifierTransfert Sol-Plante et Cycle des Eléments Minéraux dans les Ecosystèmes Cultivés [TCEM]
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorDENOROY, Pascal
dc.date.accessioned2024-04-08T12:00:57Z
dc.date.available2024-04-08T12:00:57Z
dc.date.issued2017
dc.date.conference2014-09-17
dc.identifier.isbn978-94-62611-48-1
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/196112
dc.description.abstractEnNew indicators for bioavailability, in link with the knowledge of the phenomena involved in plants' phosphate nutrition, were assessed in carrot crops, and experimental references were established. The trials conducted in the Aquitaine region, a major French carrot production area for the fresh market, consisted in analysing the response of carrot, in terms of yield, to a wide range of soil phosphorus supply levels. The synthesis of the data acquired during a three-year study shows the importance of the P concentration in the soil solution, i.e. the soluble P, noted as Cp, for diagnosing the soil's nutritional status. Measuring Cp may be sufficient in the case of slightly buffered soils, characteristic for carrot cultivation in Aquitaine. However, the quality of the relation between yield and soil supply improves when it is represented by the sum of soluble P and diffusible P, linked to the plant's functioning. This is indicator E. Threshold values were determined, corresponding to 1 mg P L-1 and 15.7 mg P kg-1 soil respectively for Cp and E. Those thresholds require further validation in a wider range of agronomic conditions. Furthermore, the newly acquired knowledge and technical references already make it possible to rectify fertilising practices in Aquitaine. In optimum fertilising conditions, the crop takes up 26 kg P ha-1, i.e. 60 kg P2O5 ha-1, and soil supply represents two thirds of the phosphorus uptake. This study offers perspective for new diagnosing methods, which take into account the functioning of the plant species. It shows that a more sparing use of phosphorus in carrot crops is possible without compromising yield. Changing fertilising practices accordingly will guarantee a better preservation of natural resources and water quality. Finally, the outcome of this study encourages us to apply those new concepts in soil phosphorus supply to a wider range of vegetables, in order to establish a reliable basis for integrated P management practices.
dc.language.isoen
dc.publisherISHS International Society for Horticultural Science
dc.publisher.locationLeuven (belgium)
dc.source.titleActa Horticulturae
dc.subject.enphosphorus
dc.subject.encarrot
dc.subject.enbioavailability indicators
dc.subject.enphosphate nutrition
dc.subject.enphosphate fertilising
dc.subject.ennatural resources
dc.subject.enwater quality
dc.title.enPhosphate fertilising management: new indicators for bioavailability applied to carrot crops
dc.typeCommunication dans un congrès
dc.identifier.doi10.17660/ActaHortic.2017.1153.5
dc.subject.halSciences du Vivant [q-bio]
dc.subject.halSciences de l'environnement
bordeaux.volume1153
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.conference.titleInternational Symposium on Carrot and Other Apiaceae
bordeaux.countryFR
bordeaux.title.proceedingActa Horticulturae
bordeaux.conference.cityAngers
bordeaux.peerReviewedoui
hal.identifierhal-02735228
hal.version1
hal.invitednon
hal.conference.end2014-09-19
hal.popularnon
hal.audienceNationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02735228v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.btitle=Acta%20Horticulturae&rft.date=2017&rft.volume=1153&rft.au=RAYNAL,%20C.&DENOROY,%20Pascal&rft.isbn=978-94-62611-48-1&rft.genre=unknown


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