Establishing a critical nitrogen dilution curve for estimating nitrogen nutrition index of potato crop in tropical environments

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversidad Austral de Chile-
Autor(es): dc.contributorUMR MIA 518-
Autor(es): dc.contributor2004 Throckmorton Plant Science Center-
Autor(es): dc.creatorSoratto, Rogério P.-
Autor(es): dc.creatorSandaña, Patricio-
Autor(es): dc.creatorFernandes, Fabiana M.-
Autor(es): dc.creatorFernandes, Adalton M.-
Autor(es): dc.creatorMakowski, David-
Autor(es): dc.creatorCiampitti, Ignacio A.-
Data de aceite: dc.date.accessioned2025-08-21T15:39:34Z-
Data de disponibilização: dc.date.available2025-08-21T15:39:34Z-
Data de envio: dc.date.issued2023-03-01-
Data de envio: dc.date.issued2023-03-01-
Data de envio: dc.date.issued2022-10-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.fcr.2022.108605-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/241265-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/241265-
Descrição: dc.descriptionThe critical nitrogen (N) dilution curve (CNDC) (Nc = A1W-A2) and the N nutrition index (NNI) have shown to be a robust diagnostic tool to assess crop N status. Several CNDCs were established for potatoes (Solanum tuberosum L.) in various conditions. However, it is difficult to know if these different CNDCs reflect a true variability across genotype × environment × management (G×E × M) scenarios, or are rather linked to estimation errors. Therefore, the aims of this study were to (i) estimate and compare CNDCs via a Bayesian statistical approach for different G×E × M scenarios in tropical environments and (ii) assess the uncertainty in the relationship between tuber yield and NNI. Field experiments were conducted in three site-years (SYs) in the southeastern region of Brazil. Treatments consisted of two potato cultivars (Agata and Electra) and five N fertilization managements [differing in the N rates (0 −320 kg N ha-1) and/or application timings]. Based on 95% credibility intervals, we found no significant differences between CNDCs across G×E × M scenarios assessed and thus derived a single generic CNDC for both cultivars and all SYs defined by Nc = 3.86 W-0.34. This global CNDC was used to compute NNI and discriminate tuber yields obtained under N-limiting and non-N-limiting conditions. An uncertainty analysis revealed that critical NNI threshold values for the tuber yield response to N management were not statistically different among G×E × M scenarios. Therefore, these results support the use of a unique CNDC for estimating the N status (NNI) of potato crop in tropical environments. We found no evidence of the need for SY- or cultivar-specific CNDCs. Future studies should evaluate N dilution curves and NNI for potato across different production environments worldwide.-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionAgence Nationale de la Recherche-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionDept. of Crop Science College of Agricultural Sciences São Paulo State University (UNESP), SP-
Descrição: dc.descriptionCenter of Tropical Roots and Starches São Paulo State University (UNESP), SP-
Descrição: dc.descriptionInstitute of Plant Production and Protection Universidad Austral de Chile Campus Isla Teja-
Descrição: dc.descriptionUniversity Paris-Saclay INRAE AgroParisTech UMR MIA 518-
Descrição: dc.descriptionDept. of Agronomy Kansas State University 2004 Throckmorton Plant Science Center-
Descrição: dc.descriptionDept. of Crop Science College of Agricultural Sciences São Paulo State University (UNESP), SP-
Descrição: dc.descriptionCenter of Tropical Roots and Starches São Paulo State University (UNESP), SP-
Descrição: dc.descriptionCAPES: 001-
Descrição: dc.descriptionAgence Nationale de la Recherche: 16-CONV-0003-
Descrição: dc.descriptionFAPESP: 2016/15396-5-
Descrição: dc.descriptionCNPq: 304736/2018-0-
Idioma: dc.languageen-
Relação: dc.relationField Crops Research-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectBayesian-
Palavras-chave: dc.subjectN management-
Palavras-chave: dc.subjectNNI-
Palavras-chave: dc.subjectSolanum tuberosum-
Palavras-chave: dc.subjectTuber yield-
Título: dc.titleEstablishing a critical nitrogen dilution curve for estimating nitrogen nutrition index of potato crop in tropical environments-
Tipo de arquivo: dc.typelivro digital-
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