Simplified measurement-based simulation model of soil-plant phosphorus cycles in long-term agro-systems
hal.structure.identifier | Interactions Sol Plante Atmosphère [UMR ISPA] | |
dc.contributor.author | MOLLIER, Alain | |
hal.structure.identifier | Interactions Sol Plante Atmosphère [UMR ISPA] | |
dc.contributor.author | LI, Haixiao | |
hal.structure.identifier | Quebec Research and Development Centre | |
dc.contributor.author | ZIADI, Noura | |
hal.structure.identifier | Interactions Sol Plante Atmosphère [UMR ISPA] | |
dc.contributor.author | MOREL, Christian | |
dc.date.accessioned | 2024-04-08T12:09:58Z | |
dc.date.available | 2024-04-08T12:09:58Z | |
dc.date.issued | 2016 | |
dc.date.conference | 2016-11-06 | |
dc.identifier.uri | https://oskar-bordeaux.fr/handle/20.500.12278/196600 | |
dc.description.abstractEn | Actual phosphorus models are created in conventional tillage system. In addition, most simulation models are process-based, which need mathematical descriptions of fundamental physio-chemical mechanisms. The small time-step e.g. daily might not fit long-term simulation. In this study, a P model based on measured data was created to simulate the evolution of soil P status along soil profile in long-term. In P model, a soil zone was divided into 30 grids according to vertical (0-5, 5-10, 10-20, 20-30 and 30-40 cm) and lateral (0-10, 10-20 and 20-30 cm for two sides into inter-row) coordinates. For each grid, P stock was defined as total amount of phosphate ions in solid and liquid phases. The P inputs and P outputs of each grid such as fertilizer, uptake, runoff and leaching were estimated with measured data in every time-step (yearly). The P status (phosphate ion concentration in soil solution) was calculated from P stock and P budget in each time step. The simulation was conducted with two tillage systems [moldboard plough (MP) and no-till (NT)].The P model managed to simulate the evolution of P status along soil profile in MP and NT during 25 years; while it was a homogenous distribution of soil P within 0-20 cm in MP. The simulated results indicated that higher accumulation of soil P in upper layers might lead to a lower use of soil P stocked in sub-soil by crop uptake. However, the model still needs validation and adjustment of parameters to form more accurate results. | |
dc.language.iso | en | |
dc.subject | analyse de sol | |
dc.subject | phosphore | |
dc.subject | fertilisation | |
dc.subject.en | soil analysis | |
dc.subject.en | phosphorus | |
dc.subject.en | fertilization | |
dc.title.en | Simplified measurement-based simulation model of soil-plant phosphorus cycles in long-term agro-systems | |
dc.type | Communication dans un congrès | |
dc.subject.hal | Sciences du Vivant [q-bio] | |
bordeaux.page | np | |
bordeaux.hal.laboratories | Interactions Soil Plant Atmosphere (ISPA) - UMR 1391 | * |
bordeaux.institution | Bordeaux Sciences Agro | |
bordeaux.institution | INRAE | |
bordeaux.conference.title | Meeting of working Group Medicago sativa | |
bordeaux.country | US | |
bordeaux.conference.city | Phoenix | |
bordeaux.peerReviewed | oui | |
hal.identifier | hal-01603652 | |
hal.version | 1 | |
hal.invited | non | |
hal.proceedings | oui | |
hal.conference.organizer | American Society of Agronomy (ASA). USA. | |
hal.conference.end | 2016-11-09 | |
hal.popular | non | |
hal.audience | Non spécifiée | |
hal.origin.link | https://hal.archives-ouvertes.fr//hal-01603652v1 | |
bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.date=2016&rft.spage=np&rft.epage=np&rft.au=MOLLIER,%20Alain&LI,%20Haixiao&ZIADI,%20Noura&MOREL,%20Christian&rft.genre=unknown |
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