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Mechanical pruning in non-irrigated vineyards: effects on yield and grape composition of cultivar ‘Syrah’ (Vitis vinifera L.)

2020Artigo científico Acesso aberto
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dc.contributor.authorBotelho, M.
dc.contributor.authorCruz, A.
dc.contributor.authorSilva, E.B.
dc.contributor.authorMexia, A.
dc.contributor.authorRicardo-da-Silva, Jorge M.
dc.contributor.authorCastro, R.
dc.contributor.authorRibeiro, Henrique
dc.date.accessioned2021-09-22T13:37:35Z
dc.date.available2021-09-22T13:37:35Z
dc.date.issued2020
dc.description.abstractThe effect of mechanical pruning on vine performance and wine quality was evaluated from 2012 until 2015. Two trial fields, with a randomized complete block design, were established on already existing ‘Syrah’ vineyards in Quinta do Côro and Quinta do Gradil, located in Tejo and Lisboa wine regions respectively. Mechanical pruning (MEC) was simulated by trimming all shoots to a 15 cm square around the cordon. Manual pruning (MAN) treatment was subjected to a traditional spur pruning. MEC tended to increase water consumption due to the higher proportion of exposed leaf area, since the total leaf area per vine was not different from MAN. The transpiration and photosynthetic rates were tendentially lower in MEC, indicating an adaptation to more stressful conditions. Yield was higher in MEC, while the individual shoot vigour and the total amount of pruning wood were lower in MEC. These results led to higher values of the Ravaz index in this treatment, reflecting changes in the partitioning of carbohydrates that were redirected from vegetative to reproductive growth. Total dry matter production (DMP) was mainly not affected by the pruning system, even in years with lower water availability. In 2014, when water was not a limitative factor, the total dry matter production was higher in MEC. The DMP in MEC was not reduced along the trial, suggesting that reserves accumulation have not been restricted. The grape composition, analyzed in 2013 and 2014, has not been significantly affected, with the exception of the total soluble solids content (TSS) and the pH, in 2014, which were lower in MEC. The results indicate that mechanical pruning is a reliable instrument to improve vine performance in non-irrigated vineyards, increasing yield without quality loss, even in dry yearspt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationActa Hortic. 1276. ISHS 2020pt_PT
dc.identifier.doi10.17660/ActaHortic.2020.1276.18pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.5/21918
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherISHSpt_PT
dc.relationLinking Landscape, Environment, Agriculture and Food
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectmechanical pruningpt_PT
dc.subjectwater scarcitypt_PT
dc.subjectdry matter partitioningpt_PT
dc.subjectyield and qualitypt_PT
dc.titleMechanical pruning in non-irrigated vineyards: effects on yield and grape composition of cultivar ‘Syrah’ (Vitis vinifera L.)pt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardNumberUID/AGR/04129/2013
oaire.awardTitleLinking Landscape, Environment, Agriculture and Food
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FAGR%2F04129%2F2013/PT
oaire.citation.titleActa Horticulturaept_PT
oaire.fundingStream6817 - DCRRNI ID
person.familyNameRicardo-da-Silva
person.familyNameRibeiro
person.givenNameJorge M.
person.givenNameHenrique
person.identifier.ciencia-id5911-8A48-8691
person.identifier.ciencia-idEC10-9545-3BB6
person.identifier.orcid0000-0003-3706-0982
person.identifier.orcid0000-0002-7914-620X
person.identifier.ridA-7345-2008
person.identifier.scopus-author-id6603201300
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsembargoedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication34562191-9ff7-4932-9c5e-c3b3726e01ae
relation.isAuthorOfPublication8271aea3-e627-41d1-8183-5068e8ca2358
relation.isAuthorOfPublication.latestForDiscovery34562191-9ff7-4932-9c5e-c3b3726e01ae
relation.isProjectOfPublicationf8f00f10-9d6c-4a8e-875e-7eb9b5281338
relation.isProjectOfPublication.latestForDiscoveryf8f00f10-9d6c-4a8e-875e-7eb9b5281338

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