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MERCI: a simple method and decision-support tool to estimate availability of nitrogen from a wide range of cover crops to the next cash crop

hal.structure.identifierAGroécologie, Innovations, teRritoires [AGIR]
dc.contributor.authorCONSTANTIN, Julie
hal.structure.identifierCHAMBRE REGIONALE D'AGRICULTURE POITOU CHARENTES
dc.contributor.authorMINETTE, Sébastien
hal.structure.identifierArvalis Institut du Végétal, Baziège
dc.contributor.authorVERICEL, Gregory
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorJORDAN-MEILLE, Lionel
hal.structure.identifierCirad Direction Générale [Cirad-DG]
dc.contributor.authorJUSTES, Eric
dc.date.accessioned2024-04-08T11:42:40Z
dc.date.available2024-04-08T11:42:40Z
dc.date.issued2023-09-20
dc.identifier.issn0032-079X
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/195077
dc.description.abstractEnBackground and aims Cover crops can efficiently increase nitrogen (N) recycling in agroecosystems. By providing a green-manure effect for the next crop, they allow reduced mineral fertilisation. We developed a decision-support tool, called MERCI, to predict N available from cover crop residues over time, from a single measurement of fresh shoot biomass.Methods We coupled a large experimental database from France with a simulation experiment using the soil-crop model STICS. More than 25 000 measurements of 74 species of cover crops as a sole crop or bispecific mixtures were collected. Linear regression models, at the species, family or entire-database level depending on the data available, were built to predict dry biomass, N amount and C:N ratio. Dynamics of N mineralized and leaching from cover crop residues were predicted at 24 contrasting sites as a function of the biomass, carbon (C):N ratio and termination date. Results Correlations between fresh biomass, dry biomass and N amounts in experimental data were strong (r = 0.80-0.96), and predicted N amounts in fresh shoot biomass were relatively accurate. Percentages of N mineralized and leached simulated bySTICS were explained mainly by the C:N ratio, site and number of months after termination, but to different degrees.Conclusion MERCI is an easy and robust decision support tool for predicting N release in the field, and could thus be adopted by advisors and farmers to improve management of nutrient recycling in temperate arable cropping systems.
dc.language.isoen
dc.publisherSpringer Verlag
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.subject.enBiomass
dc.subject.enGreen-manure
dc.subject.enCarbon
dc.subject.enMineralization
dc.subject.enSTICS model
dc.subject.enBiomass Green-manure Carbon Mineralization STICS model
dc.title.enMERCI: a simple method and decision-support tool to estimate availability of nitrogen from a wide range of cover crops to the next cash crop
dc.typeArticle de revue
dc.identifier.doi10.1007/s11104-023-06283-1
dc.subject.halSciences du Vivant [q-bio]
bordeaux.journalPlant and Soil
bordeaux.page19p.
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-04216875
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04216875v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Plant%20and%20Soil&rft.date=2023-09-20&rft.spage=19p.&rft.epage=19p.&rft.eissn=0032-079X&rft.issn=0032-079X&rft.au=CONSTANTIN,%20Julie&MINETTE,%20S%C3%A9bastien&VERICEL,%20Gregory&JORDAN-MEILLE,%20Lionel&JUSTES,%20Eric&rft.genre=article


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