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hal.structure.identifierEnvironmental and Resource Studies Program
dc.contributor.authorMESSIGA, Aimé Jean
hal.structure.identifierSoils and Crops Research and Development Centre
dc.contributor.authorZIADI, Noura
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorMOLLIER, Alain
hal.structure.identifierDepartment of Soils and Agri-Food Engineering
dc.contributor.authorPARENT, Léon-Etienne
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorSCHNEIDER, Andre
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorMOREL, Christian
dc.date.accessioned2024-04-08T12:02:35Z
dc.date.available2024-04-08T12:02:35Z
dc.date.issued2015
dc.identifier.issn0016-7061
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/196213
dc.description.abstractEnUnraveling phosphorus cycling is an important issue for managing agricultural ecosystem sustainably. We built a process-based mass balance model that equilibrates annual P budget with plant-available soil P, assessed as the sum of phosphate ions (Pi) in solution and the time-dependent diffusive Pi (Pr) that replenishes Pi in solution. We evaluate the predictive ability of this model considering different scenarios of (a) periods of Pi diffusion at the solid-to-solution interface, and (b) contributions of the plow layer to plant nutrition. On average, the P applications were: 0 (P0), 27 (P27), and 79 (P79) kg P ha− 1 applied every year and 52 (P52/2) kg P ha− 1 applied every 2 years as triple superphosphate over 17 years (1975–1992). Climatic data, grain yields, grain P contents and annual P budgets were determined. Batch experiments were conducted in laboratory to analyze the concentration of Pi (Cp) and Pr kinetics by isotopic dilution for short periods (< 400 min). All experimental Pr values closely fitted to the following Freundlich kinetic equation: Pr = 5.72Cp0.69t0.24 (144 observations, R2 = 0.95, P < 0.001). Assuming that slow reactions lasted for one year and that the P removed by harvest was entirely derived from the plow layer, Cp simulations over 17 years accurately reflected the long-term effect of balanced P fertilization, P27 and P52/2 treatments, but not of unbalanced P fertilization, P0 and P79 treatments; root mean square deviation (RMSD) was 0.4343. The Cp simulations based on the assumption that slow reactions lasted more than a year were significantly improved for unbalanced P fertilization, P0 and P79 treatments (RMSD = 0.2976 for 3 years and RMSD = 0.2329 for 5 years). In addition, the Cp simulations based on the assumption that for P0 treatment, part of grain P was taken up from below the plow layer were significantly improved (RMSD = 0.0613 for 80% and RMSD = 0.0670 for 60% P uptake from the plow layer). The proposed model accounted for extended periods of Pi equilibration and the contribution of the plow layer to plant nutrition in this maize monoculture.
dc.language.isoen
dc.publisherElsevier
dc.subject.enequilibration period
dc.subject.endiffusive soil P
dc.subject.enP budget
dc.subject.enprocess-based mass-balance modeling
dc.subject.enplow layer
dc.subject.ensolution phosphate ions
dc.title.enProcess-based mass-balance modeling of soil phosphorus availability: Testing different scenarios in a long-term maize monoculture
dc.typeArticle de revue
dc.identifier.doi10.1016/j.geoderma.2014.12.009
dc.subject.halSciences du Vivant [q-bio]/Sciences agricoles
bordeaux.journalGeoderma
bordeaux.page41-49
bordeaux.volume243–244
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.issue0
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-02635051
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02635051v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Geoderma&rft.date=2015&rft.volume=243%E2%80%93244&rft.issue=0&rft.spage=41-49&rft.epage=41-49&rft.eissn=0016-7061&rft.issn=0016-7061&rft.au=MESSIGA,%20Aim%C3%A9%20Jean&ZIADI,%20Noura&MOLLIER,%20Alain&PARENT,%20L%C3%A9on-Etienne&SCHNEIDER,%20Andre&rft.genre=article


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