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Assessing the Role of Phosphorus, Starter Nitrogen and Boron in Subterranean Clover and Annual Ryegrass Grown in Acidic Soils Under Mediterranean Conditions in Portugal

2026Artigo científico Acesso aberto
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datacite.subject.fosCiências Agrárias::Agricultura, Silvicultura e Pescas
datacite.subject.sdg04:Educação de Qualidade
datacite.subject.sdg12:Produção e Consumo Sustentáveis
dc.contributor.authorSawimbo, Almeida
dc.contributor.authorAguiar, Peltier
dc.contributor.authorArrobas, Margarida
dc.contributor.authorAguiar, Carlos
dc.contributor.authorRodrigues, Nuno
dc.contributor.authorJongen, Marjan
dc.contributor.authorTeixeira, Ricardo F. M.
dc.contributor.authorDomingos, Tiago
dc.contributor.authorRodrigues, Manuel Ângelo
dc.contributor.editorMaria Serrano
dc.date.accessioned2026-06-01T17:36:47Z
dc.date.available2026-06-01T17:36:47Z
dc.date.issued2026
dc.description.abstractIn Mediterranean pasture systems, maintaining legume persistence and productivity is often constrained by phosphorus (P) deficiency in acidic soils. Although small doses of starter nitrogen (N) are commonly used in pulse crops to support early growth before N fixation begins, this practice has not been widely tested in legume-grass mixtures. In addition, boron (B), a micronutrient particularly important for dicot species, may also influence legume performance under these conditions. Thus, this study investigated the effects of P application on dry matter yield (DMY) and nutrient uptake in subterranean clover (Trifolium subterraneum L., cv. Denmark), annual ryegrass (Lolium multiflorum Lam., cv. Falladino) and their mixture, using a pot experiment with acidic soils from two distinct locations in Portugal. The study also evaluated the impact of a small N starter dose and B application. Although Soil 2 had higher acidity (pH 5.0) than Soil 1 (pH 5.4), it supported greater biomass production, likely due to its higher organic carbon (C) content (50.8 g kg-1), which may have buffered soil acidity. P application significantly increased P uptake, DMY and N accumulation in legumes, suggesting a critical role in nodulation and/or nodule function. The N starter had no significant effect, likely because sufficient N was released from soil organic matter prior to the onset of biological N fixation. While the B application increased tissue B concentrations, it did not affect DMY, possibly because B was adequately available from organic matter. These findings highlight the importance of P in legume management in pasture systems and suggest that, in soils with sufficient organic matter, the application of starter N and B may not be necessary.eng
dc.description.sponsorshipThis work was supported by national funds through FCT/MCTES(PIDDAC), through the projects UIDB/50009/2025, UIDP/50009/2025, LA/P/0083/2020, UIDB/00690/2020 (DOI: 10.54499/UIDB/00690/2020) and LA/P/0007/2020 (DOI: 10.54499/LA/P/0007/2020). It was alsofunded by the project AVALON (COMPETE2030-FEDER-02288900).
dc.identifier.citationSawimbo, Almeida; Aguiar, Peltier; Arrobas, Margarida; Aguiar, Carlos; Rodrigues, Nuno; Jongen, Marjan; Teixeira, Ricardo F. M.; Domingos, Tiago; Rodrigues, Manuel Ângelo (2026). Assessing the Role of Phosphorus, Starter Nitrogen andBoron in Subterranean Clover and Annual RyegrassGrown in Acidic Soils Under MediterraneanConditions in Portugal. International Journal of Agronomy. ISSN 1687-8159. 2026:1, p. 1-12
dc.identifier.doi10.1155/ioa/8272751
dc.identifier.issn1687-8159
dc.identifier.issn1687-8167
dc.identifier.urihttp://hdl.handle.net/10198/36821
dc.language.isoeng
dc.peerreviewedyes
dc.publisherWiley
dc.relationLARSyS - Laboratory of Robotics and Engineering Systems
dc.relationMountain Research Center - UIDB/00690/2020
dc.relationAssociate Laboratory for Sustainability and Tecnology in Mountain Regions - LA/P/0007/2020
dc.relation.ispartofInternational Journal of Agronomy
dc.rights.urihttp://creativecommons.org/licenses/by-nd/4.0/
dc.subjectBiological nitrogen fixation
dc.subjectDry matter yield
dc.subjectLolium multiforum
dc.subjectSown pastures
dc.subjectTrifolium subterraneum
dc.titleAssessing the Role of Phosphorus, Starter Nitrogen and Boron in Subterranean Clover and Annual Ryegrass Grown in Acidic Soils Under Mediterranean Conditions in Portugaleng
dc.typejournal article
dspace.entity.typePublication
oaire.awardNumberLA/P/0083/2020
oaire.awardNumberUIDB/00690/2020
oaire.awardNumberLA/P/0007/2020
oaire.awardTitleLARSyS - Laboratory of Robotics and Engineering Systems
oaire.awardTitleMountain Research Center - UIDB/00690/2020
oaire.awardTitleAssociate Laboratory for Sustainability and Tecnology in Mountain Regions - LA/P/0007/2020
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0083%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00690%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0007%2F2020/PT
oaire.citation.endPage12
oaire.citation.issue1
oaire.citation.startPage1
oaire.citation.titleInternational Journal of Agronomy
oaire.citation.volume2026
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameArrobas
person.familyNameAguiar
person.familyNameRodrigues
person.givenNameMargarida
person.givenNameCarlos
person.givenNameManuel Ângelo
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person.identifier.orcid0000-0002-4652-485X
person.identifier.orcid0000-0001-8643-7112
person.identifier.orcid0000-0002-5367-1129
person.identifier.ridI-3933-2014
person.identifier.ridO-1721-2016
person.identifier.scopus-author-id8575728800
person.identifier.scopus-author-id54413830100
person.identifier.scopus-author-id35270106800
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
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