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Plant and soil tests to optimize phosphorus fertilization management of grasslands

hal.structure.identifierAGroécologie, Innovations, teRritoires [AGIR]
dc.contributor.authorJOUANY, Claire
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorMOREL, Christian
hal.structure.identifierAgriculture and Agri-Food [AAFC]
dc.contributor.authorZIADI, Noura
hal.structure.identifierQuébec Research and Development Centre
dc.contributor.authorBÉLANGER, Gilles
hal.structure.identifierAgroscope
dc.contributor.authorSINAJ, Sokrat
hal.structure.identifierBanat University of Agricultural Sciences and Veterinary Medicine [USAMVBT]
dc.contributor.authorSTROIA, Ciprian
hal.structure.identifierAGroécologie, Innovations, teRritoires [AGIR]
dc.contributor.authorCRUZ, Pablo
hal.structure.identifierAGroécologie, Innovations, teRritoires [AGIR]
dc.contributor.authorTHEAU, Jean-Pierre
hal.structure.identifierAGroécologie, Innovations, teRritoires [AGIR]
dc.contributor.authorDURU, Michel
dc.date.accessioned2024-04-08T11:44:39Z
dc.date.available2024-04-08T11:44:39Z
dc.date.issued2021-04
dc.identifier.issn1161-0301
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/195162
dc.description.abstractEnDeveloping more sustainable forage systems requires efficient decision support tools for fertilization management. Soil phosphorus (P) tests have long been used as decision support tools for fertilization management but, more recently, plant nutrition indices using the P concentration of shoot biomass were developed to assess the P nutrition status of grasslands. The objectives of this study were to (i) evaluate the relationship between the phosphorus nutrition index (PNI) and the yield response to P fertilization (ii) analyze relationships between PNI and soil plant-available P (SPAP) indicators, and (iii) evaluate PNI assets for P diagnosis in forage system. Five long-term (≥ 9 years) grassland P fertilization experiments under different soil and climate environments in Canada, Switzerland, France and Romania were used. Three SPAP indicators were tested: CP, the soil solution orthophosphate ions (oPion) concentration (mg P L−1), Olsen P (mg P kg−1), and, a process-based assessment (Qw + Pr) from the sum of oPion in the soil solution (Qw, mg P kg−1) and diffusive oPion with time and CP (Pr, mg P kg−1). PNI was calculated as sward P concentration divided by the critical P concentration.The cumulative effect of P fertilization resulted in a wide range of SPAP values. Overall, CP varied from 0.03 to 3.6 mg P L−1, (Qw + Pr60 min) from 6−52 mg kg−1, and Olsen P from 4−40 mg kg−1. The PNI varied from 48–94% in plots with no applied P, and from 83–121% in P-fertilized plots. A generally positive relationship between relative forage dry matter yield and PNI was established, with a critical PNI value of 92% that distinguishes P-limited and non-P-limited grassland nutrition. Positive relationships between PNI and the three SPAP indicators confirmed that the soil P status influenced the grassland P nutrition status. Critical values on a stock basis for a target PNI value of 92% were similar for Olsen P (12.9 kg P ha−1) and (Qw + Pr60 min) (13.5 kg P ha−1). This study opens perspectives for P diagnosis improvement in forage systems.
dc.language.isoen
dc.publisherElsevier
dc.rights.urihttp://creativecommons.org/licenses/by-nc/
dc.subject.enPhosphorus
dc.subject.enGrassland
dc.subject.enLong-term field experiment
dc.subject.enPhosphorus nutrition index
dc.subject.enSoil plant available P
dc.subject.enOlsen P
dc.title.enPlant and soil tests to optimize phosphorus fertilization management of grasslands
dc.typeArticle de revue
dc.identifier.doi10.1016/j.eja.2021.126249
dc.subject.halSciences de l'environnement
bordeaux.journalEuropean Journal of Agronomy
bordeaux.volume125
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-03152331
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03152331v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=European%20Journal%20of%20Agronomy&rft.date=2021-04&rft.volume=125&rft.eissn=1161-0301&rft.issn=1161-0301&rft.au=JOUANY,%20Claire&MOREL,%20Christian&ZIADI,%20Noura&B%C3%89LANGER,%20Gilles&SINAJ,%20Sokrat&rft.genre=article


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