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Critical plant and soil phosphorus for wheat, maize, and rapeseed after 44 years of P fertilization
| hal.structure.identifier | Agroscope | |
| dc.contributor.author | CADOT, Selma | |
| hal.structure.identifier | Quebec Research and Development Centre | |
| dc.contributor.author | BÉLANGER, Gilles | |
| 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 | |
| hal.structure.identifier | Agroscope | |
| dc.contributor.author | SINAJ, Sokrat | |
| dc.date.accessioned | 2024-04-08T12:06:01Z | |
| dc.date.available | 2024-04-08T12:06:01Z | |
| dc.date.issued | 2018 | |
| dc.identifier.issn | 1385-1314 | |
| dc.identifier.uri | https://oskar-bordeaux.fr/handle/20.500.12278/196385 | |
| dc.description.abstractEn | Phosphorus (P) crop fertilization requires optimal management to avoid the waste of a non-renewable resource and water pollution, but current methods for assessing soil phyto-available P and plant P requirements are not sufficiently precise to meet this goal. The objectives of the present study were to (1) evaluate the effect of long-term P fertilization on the grain yield of winter wheat, maize, and rapeseed, (2) validate or establish models of critical shoot P concentration (P-C) based on relationships of shoot P concentration with either shoot biomass or shoot nitrogen (N) concentration, and (3) assess both plant-based and soil-based diagnostic tools for managing P fertilization. A long-term field experiment with contrasted P fertilizer treatments, established in 1971 by Agroscope in Changins (Switzerland), was used to measure the shoot biomass and P concentration of winter wheat in 2011, maize in 2012, and rapeseed in 2014 weekly during the growing period and the grain yield at harvest. Soil available P in the 0-0.20m soil layer was assessed by three chemical extractions: ammonium acetate EDTA (P-AAE), sodium bicarbonate (P-NaHCO3), and CO2-saturated water (P-CO2). Long-term P fertilization increased soil available P extracted by P-CO2 (+24%), P-AAE (+200%), and P-NaHCO3 (+155%), shoot growth and grain yield by 8.4% and 26.2% for winter wheat and rapeseed respectively but had no effect on maize. The relationships between P-C and shoot biomass or N concentration were described respectively by allometric and linear models (R-2>0.85, n=21, 28 and 32 for winter wheat, maize and rapeseed respectively; slope P values for linear models <0.05). The P-C-shoot N concentration model (slope: 0.083, intercept: 0.88) for winter wheat confirmed results from previous studies and can be used for calculating the P nutrition index. For the three soil available P indicators, threshold values needed to achieve 95% of the maximum yield for the three crops were less than those currently used in the official fertilization guidelines in Switzerland. Our results obtained after 44years of contrasted P fertilization confirm the relationship between P-C and shoot N concentration for grain crops and the need to revise P fertilizer recommendations based on currently used soil P tests. | |
| dc.language.iso | en | |
| dc.publisher | Springer Verlag | |
| dc.rights.uri | http://creativecommons.org/licenses/by/ | |
| dc.subject.en | critical P concentration | |
| dc.subject.en | plant-available P | |
| dc.subject.en | P nutrition index | |
| dc.subject.en | winter wheat | |
| dc.subject.en | maize | |
| dc.subject.en | rapeseed | |
| dc.title | Critical plant and soil phosphorus for wheat, maize, and rapeseed after 44 years of P fertilization | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1007/s10705-018-9956-0 | |
| dc.subject.hal | Sciences du Vivant [q-bio] | |
| dc.subject.hal | Sciences de l'environnement | |
| bordeaux.journal | Nutrient Cycling in Agroecosystems | |
| bordeaux.page | 417-433 | |
| bordeaux.volume | 112 | |
| bordeaux.hal.laboratories | Interactions Soil Plant Atmosphere (ISPA) - UMR 1391 | * |
| bordeaux.issue | 3 | |
| bordeaux.institution | Bordeaux Sciences Agro | |
| bordeaux.institution | INRAE | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-02621327 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-02621327v1 | |
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