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Measuring the Influence of Key Management Decisions on the Nitrogen Nutritional Status of Annual Ryegrass-Based Forage Crops

2024-08-17Artigo científico Acesso aberto
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dc.contributor.authorSilva, Luís
dc.contributor.authorBarbosa, Sofia
dc.contributor.authorLidon, Fernando Cebola
dc.contributor.authorSantos-Silva, José
dc.contributor.authorConceição, Luís Alcino
dc.contributor.institutionDCT - Departamento de Ciências da Terra
dc.contributor.institutionGeoBioTec - Geobiociências, Geoengenharias e Geotecnologias
dc.contributor.pblMDPI - Multidisciplinary Digital Publishing Institute
dc.date.accessioned2024-09-18T22:23:14Z
dc.date.available2024-09-18T22:23:14Z
dc.date.issued2024-08-17
dc.descriptionPublisher Copyright: © 2024 by the authors. The APC was funded by national funds through the Fundação para a Ciência e a Tecnologia, I.P. (Portuguese Foundation for Science and Technology) by the project UIDB/05064/2020 (VALORIZA—Research Centre for Endogenous Resource Valorization) and by national funds from Fundação para a Ciência e a Tecnologia (FCT), Portugal, through the research unit UIDP/04035/2020 (GeoBioTec).
dc.description.abstractIncreasing nitrogen use efficiency (NUE) by improving agricultural practices and soil knowledge, and implementing precision agriculture, is essential to reduce the overuse of fertilizers and increase nutrient retention. This study aimed to optimize N management in agriculture by establishing a critical N dilution curve (CNDC) and analyzing variations in NUE and the N nutrition index (NNI) among different crops under various treatments. Using a Bayesian model, the CNDC was determined as %Nc = 3.63 × PDM−0.71. The results showed that plant dry matter (PDM) and plant N content (PNC) varied significantly with crop type and sampling moments. Strong positive correlations are presented by PDM with N uptake (NUp) (0.89) and NNI (0.88), along with an inverse correlation with critical N concentration (−0.95). The study found that crops under irrigation conditions had higher NUp and higher NNI. This study provides valuable insights into the influence of key management decisions on the N nutritional status of annual ryegrass-based forage crops. The results highlight the critical role of accurate and conscious decision-making in improving NUE and crop yields, emphasizing the complex interactions between biomass production and N dynamics in crops. The conclusions allow significant benefits to be realized, contributing to the sustainability of agricultural systems.en
dc.description.versionpublishersversion
dc.description.versionpublished
dc.format.extent16
dc.format.extent4144601
dc.identifier.doi10.3390/agronomy14081817
dc.identifier.issn2073-4395
dc.identifier.otherPURE: 99132233
dc.identifier.otherPURE UUID: 96bffe0a-5909-4e94-9a75-575af98a88cb
dc.identifier.otherScopus: 85202648521
dc.identifier.otherWOS: 001305164400001
dc.identifier.otherORCID: /0000-0002-6233-2970/work/217888961
dc.identifier.urihttp://hdl.handle.net/10362/172035
dc.identifier.urlhttps://www.scopus.com/pages/publications/85202648521
dc.language.isoeng
dc.peerreviewedyes
dc.subjectcritical nitrogen concentration
dc.subjectcrop yield
dc.subjectdata-driven approach
dc.subjectsite-specific analysis
dc.subjectsustainability
dc.subjectvariable rate fertilization
dc.subjectAgronomy and Crop Science
dc.subjectSDG 2 - Zero Hunger
dc.subjectSDG 17 - Partnerships for the Goals
dc.titleMeasuring the Influence of Key Management Decisions on the Nitrogen Nutritional Status of Annual Ryegrass-Based Forage Cropsen
dc.typejournal article
degois.publication.issue8
degois.publication.titleAgronomy
degois.publication.volume14
dspace.entity.typePublication
rcaap.rightsopenAccess

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