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Analysis of Petiole Sap Nutrients Using Rapid and Standard Methods and Its Relation to Leaf Analysis of Fertilized Malus domestica cv. Gala

2024-01Journal article Open access
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dc.contributor.authorMota, Mariana
dc.contributor.authorMartins, M.
dc.contributor.authorSprey, Layanne
dc.contributor.authorMaurício, Anabela
dc.contributor.authorRosa, Cristina
dc.contributor.authorFaria, João
dc.contributor.authorMartins, Miguel
dc.contributor.authorSousa, Miguel L. de
dc.contributor.authorSantos, Ricardo
dc.contributor.authorSousa, Rui M. de
dc.contributor.authorRibeiro, Henrique
dc.contributor.authorOliveira, Cristina M.
dc.date.accessioned2024-12-16T13:29:49Z
dc.date.available2024-12-16T13:29:49Z
dc.date.issued2024-01
dc.description.abstractCurrently, fertilization decisions in apple orchards are based on soil and leaf analyses while the leaf material is sampled after the growing season, usually in June–July (90–110 days after full bloom). This approach is inefficient, as the information becomes available later than the growing season and is therefore only useful in supporting fertilization decisions for the next year, not the current one. To establish a method that provides useful information for fertilization decisions earlier in the growth cycle, our research focused on the assessment of the nutrient content of petiole sap using different methods, the standard method and the rapid method using a reflectometer. For this study, in 2021, four ‘Gala’ orchards were fertilized with different N–P–K levels. Macro and micronutrients were determined in leaves and petiole sap at 45 and 90–110 days after full bloom (DAFB) using standard laboratory methods and the reflectometer. When leaf analysis at 45 and 90–110 DAFB was compared with petiole sap analysis at the same time point, no significant correlations were found between the nutrient contents in leaf material and petiole sap, with the exception of calcium. However, positive results were obtained regarding the correlation between reflectometer determination and standard laboratory analyses. The regression analysis revealed high determination coefficients for N-NO3 − (R2 = 0.703), K+ (R2 = 0.705), Ca2+ (R2 = 0.715), and Mg2+ (R2 = 0.780) between standard laboratory methods and the reflectometer. These results suggest that the reflectometer enables a real-time diagnostic tool for monitoring nutrient status throughout the growth cycle, particularly key nutrients related to fruit quality. The N–P–K fertilization strategies had no influence on the nutrient content of leaves or petiole sap. The nutrient content of both sample types varied depending on the orchard.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationMota, M.; Martins, M.J.; Sprey, L.; Maurício, A.; Rosa, C.; Faria, J.; Martins, M.B.; de Sousa, M.L.; Santos, R.; de Sousa, R.M.; et al. Analysis of Petiole Sap Nutrients Using Rapid and Standard Methods and Its Relation to Leaf Analysis of Fertilized Malus domestica cv. Gala. Horticulturae 2024, 10, 36.pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.5/96366
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relationUIDB/04129/2020pt_PT
dc.relation.publisherversionhttps://www.mdpi.com/journal/horticulturaept_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectnutrient analysis methodspt_PT
dc.subjectfertilizer ratept_PT
dc.subjection-selective strips read using reflectometrypt_PT
dc.subjectcorrelationpt_PT
dc.titleAnalysis of Petiole Sap Nutrients Using Rapid and Standard Methods and Its Relation to Leaf Analysis of Fertilized Malus domestica cv. Galapt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.issue1pt_PT
oaire.citation.startPage36pt_PT
oaire.citation.titleHorticulturaept_PT
oaire.citation.volume10pt_PT
person.familyNameMota
person.familyNameCorreia Martins
person.familyNameSprey
person.familyNameMartins
person.familyNameRibeiro
person.familyNameMaria Moniz Simões de Oliveira
person.givenNameMariana
person.givenNameMarina Filipa
person.givenNameLayanne Muniz
person.givenNameMiguel
person.givenNameHenrique
person.givenNameCristina
person.identifier.ciencia-idB11D-69A5-C996
person.identifier.ciencia-idA114-4BD9-4CC4
person.identifier.ciencia-id9310-88DD-C661
person.identifier.ciencia-idEC10-9545-3BB6
person.identifier.ciencia-id6115-7566-7CF9
person.identifier.orcid0000-0001-7732-9072
person.identifier.orcid0000-0002-4817-1226
person.identifier.orcid0000-0001-7848-4701
person.identifier.orcid0000-0002-5414-0629
person.identifier.orcid0000-0002-7914-620X
person.identifier.orcid0000-0002-3480-9380
person.identifier.scopus-author-id16307591600
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationaeecffce-489a-455e-98e0-f998d5581122
relation.isAuthorOfPublicationbe6822e7-39f9-4242-b02b-00b252f0d382
relation.isAuthorOfPublication939b7027-d867-455b-af3b-d5725183c32f
relation.isAuthorOfPublicationc4d46341-ab6a-4bce-a0de-f9c9bbc0ce2d
relation.isAuthorOfPublication8271aea3-e627-41d1-8183-5068e8ca2358
relation.isAuthorOfPublicationc0822746-e631-4826-a3d7-8964d00c6a9d
relation.isAuthorOfPublication.latestForDiscoveryc4d46341-ab6a-4bce-a0de-f9c9bbc0ce2d

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