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Modelling the phenological development of cv. Touriga Nacional and Encruzado in the Dão Wine Region, Portugal

2021-09-23Journal article Open access
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dc.contributor.authorRodrigues, Pedro
dc.contributor.authorPedroso, Vanda
dc.contributor.authorHenriques, Carla
dc.contributor.authorMatos, Ana
dc.contributor.authorReis, Samuel
dc.contributor.authorSantos, João A.
dc.date.accessioned2022-11-18T10:45:51Z
dc.date.available2022-11-18T10:45:51Z
dc.date.issued2021-09-23
dc.date.updated2022-11-16T19:09:16Z
dc.description.abstractThe grapevine vegetative cycle, which is morphologically described by its phenological stages, is strongly determined by weather conditions. Phenological models are widely applied in viticulture and are based on the assumption that air temperature is the preponderant environmental factor which determines vine development. In this study, phenological development models (PDMs) were calibrated and validated to simulate several intermediate stages between budbreak and veraison for cv. Touriga Nacional (TN) and cv. Encruzado (EN) winegrape varieties, which are widely grown in the Dao Wine Region, Portugal. These are thermal models, with which the daily sum of the rate of forcing (R) was calculated using a sigmoid function. For this purpose, a high-quality and comprehensive dataset was used which combines phenology data and weather station data in several vineyard sites spread over the region. The model showed an overall high performance (global RMSE of 5.4 days for EN and 5.0 days for TN), although it depended on the phenological stage and variety. The RMSE ranged from 3.2 to 6.2 for TN, and from 3.9 to 6.8 for EN. For both varieties and in all phenological stages, the RMSE was significantly lower than the standard deviation of the phenological observations. For TN, the model efficiency was greater than 0.71 for all phenological stages. In future studies, these models will be combined with specific models that simulate the evolution of winegrape berry quality indicators commonly used for harvest decision support. The relatively low complexity of the selected PDMs enables their use as a crop management and decision support tool. To our knowledge, no previous studies have been carried out on either of these two varieties and their intermediate phenological timings. The present study is an illustration of conceivable model development under diverse environmental conditions, thus allowing similar approaches to be adopted in other wine regions on a worldwide scale.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.20870/oeno-one.2021.55.3.4646pt_PT
dc.identifier.slugcv-prod-2624976
dc.identifier.urihttp://hdl.handle.net/10400.19/7404
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.subjectPhenological developmentpt_PT
dc.subjectModellingpt_PT
dc.subjectGrapevinept_PT
dc.subjectTouriga Nacionalpt_PT
dc.subjectEncruzadopt_PT
dc.subjectDão Wine Regionpt_PT
dc.titleModelling the phenological development of cv. Touriga Nacional and Encruzado in the Dão Wine Region, Portugalpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage352pt_PT
oaire.citation.issue3pt_PT
oaire.citation.startPage337pt_PT
oaire.citation.titleOENO Onept_PT
oaire.citation.volume55pt_PT
person.familyNameHenriques
person.givenNameCarla
person.identifier.ciencia-idF91C-B000-9ED8
person.identifier.orcid0000-0002-2142-2849
person.identifier.scopus-author-id8955187400
rcaap.cv.cienciaid961C-1FBD-5555 | Ana Cristina Bico Rodrigues de Matos
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication9138da60-0a34-4302-b547-864d612c30b8
relation.isAuthorOfPublication.latestForDiscovery9138da60-0a34-4302-b547-864d612c30b8

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