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Combined soil and foliar nitrogen fertilization effects on rainfed almond tree performance

2020Journal article Open access
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dc.contributor.authorMorais, Maria Cristina
dc.contributor.authorAires, Alfredo
dc.contributor.authorBarreales, David
dc.contributor.authorRodrigues, M.A.
dc.contributor.authorRibeiro, A.C.
dc.contributor.authorGonçalves, Berta C.C.
dc.contributor.authorSilva, A.P.
dc.date.accessioned2018-02-19T10:00:00Z
dc.date.accessioned2021-02-27T13:00:51Z
dc.date.available2018-01-19T10:00:00Z
dc.date.available2021-02-27T13:00:51Z
dc.date.issued2020
dc.description.abstractCultivation of almond in the Mediterranean region is traditionally done under rainfed conditions and poorly established cropping practices resulting in low yields. Despite the importance of nitrogen (N) fertilization to increase yield in cultivated species, this practice is usually neglected in rainfed managed almond orchards. Selection of the most appropriate rate and method of nitrogen (N) application are utmost factors to maximize almond yield in the considered conditions. Therefore, the aim of this study was to understand how soil and foliar N fertilization affect physiological and biochemical performance, almond yield, and fruit quality of almond trees grown under rainfed conditions. A 3-year experiment comprised four soil-applied N rates (0, 25, 50, and 100 kg ha−1) with and without 0.5% foliar N application of urea during the growing season, which was arranged in a randomized complete block design with three replications. Nitrogen soil fertilization did not influence the leaf gas exchange parameters and the content of photosynthetic pigments but significantly improved almond yield. There were no particular advantages in foliar fertilization. Soil application of small doses of fertilizer (e.g., 25 kg N ha−1) per year was optimal for maintaining appropriate physiological behavior of almond trees under the conditions in which the experiment was carried out, without compromise almond yield and fruit quality. Thus, the annual application at 25 kg N ha−1 enables substantial reduction of almond production costs being a positive contribution to environment-friendly farming practices.en_EN
dc.description.sponsorshipThe authors acknowledge the financial support of the European Agricultural and Rural development fund (FEADER) under the Project “Estratégias Integradas para o aumento da produtividade da amendoeira em Trás-os-Montes n° 54611,” and by Portuguese State through the “Medida 4.1. Cooperação para a Inovação do programa PRODER - Programa de Desenvolvimento Rural.” Maria Morais, Alfredo Aires, Berta Gonçalves, and Ana Silva acknowledge the support of the National Funds by FCT—Portuguese Foundation for Science and Technology, under the project UID/AGR/04033/2020. David Barreales, Manuel Rodrigues, and António Ribeiro are grateful to the Foundation for Science and Technology (FCT, Portugal) for financial support by national funds FCT/MCTES to CIMO (UID/AGR/00690/2018). The authors are also grateful to Ana Monteiro, Cristiana Teixeira, Iva Prgomet, Ivo Oliveira, Linton Dinis, Sara Bernardo, Sílvia Afonso, and Silvina Morais for their support in the field and in the laboratory.
dc.description.versioninfo:eu-repo/semantics/publishedVersionen_EN
dc.identifier.citationMorais, Maria C.; Aires, Alfredo; Barreales, David; Rodrigues, M. Ângelo; Ribeiro, António C.; Gonçalves, Berta; Silva, Ana P. (2020). Combined Soil and Foliar Nitrogen Fertilization Effects on Rainfed Almond Tree Performance. Journal of Soil Science and Plant Nutrition. ISSN 0718-9508. 20:4, p. 2552-2565en_EN
dc.identifier.doi10.1007/s42729-020-00321-yen_EN
dc.identifier.issn0718-9508
dc.identifier.urihttp://hdl.handle.net/10198/23342
dc.language.isoeng
dc.peerreviewedyesen_EN
dc.subjectBiochemical parametersen_EN
dc.subjectFruit qualityen_EN
dc.subjectN fertilizationen_EN
dc.subjectPhotosynthesisen_EN
dc.subjectPrunus dulcisen_EN
dc.subjectYielden_EN
dc.titleCombined soil and foliar nitrogen fertilization effects on rainfed almond tree performanceen_EN
dc.typejournal article
dspace.entity.typePublication
person.familyNameBarreales
person.familyNameRodrigues
person.familyNameRibeiro
person.givenNameDavid
person.givenNameManuel Ângelo
person.givenNameAntónio C.
person.identifier.ciencia-idFA16-8DE7-6968
person.identifier.ciencia-id371D-DF0D-8D68
person.identifier.ciencia-id9D19-E833-BE97
person.identifier.orcid0000-0002-8425-0167
person.identifier.orcid0000-0002-5367-1129
person.identifier.orcid0000-0002-8280-9027
person.identifier.ridO-1721-2016
person.identifier.scopus-author-id57202136257
person.identifier.scopus-author-id35270106800
rcaap.rightsopenAccessen_EN
rcaap.typearticleen_EN
relation.isAuthorOfPublication44d42f8e-7185-4c33-9551-66928841ce3e
relation.isAuthorOfPublication43621353-fa11-4559-9b24-27eba5ad3de0
relation.isAuthorOfPublicationb7ecf809-561e-40ce-86b0-603a60433710
relation.isAuthorOfPublication.latestForDiscovery44d42f8e-7185-4c33-9551-66928841ce3e

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