University Library
  • Login
A gateway to Melbourne's research publications
Minerva Access is the University's Institutional Repository. It aims to collect, preserve, and showcase the intellectual output of staff and students of the University of Melbourne for a global audience.
View Item 
  • Minerva Access
  • Veterinary and Agricultural Sciences
  • Agriculture and Food Systems
  • Agriculture and Food Systems - Research Publications
  • View Item
  • Minerva Access
  • Veterinary and Agricultural Sciences
  • Agriculture and Food Systems
  • Agriculture and Food Systems - Research Publications
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

    Shoot thinning of Semillon in a hot climate did not improve yield and berry and wine quality

    Thumbnail
    Citations
    Altmetric
    Author
    De Bei, R; Wang, X; Papagiannis, L; Fuentes, S; Gilliham, M; Tyerman, S; Collins, C
    Date
    2020-01-01
    Source Title
    OENO One
    Publisher
    VIGNE ET VIN PUBLICATIONS INT
    University of Melbourne Author/s
    Fuentes Jara, Sigfredo Augusto
    Affiliation
    Agriculture and Food Systems
    Metadata
    Show full item record
    Document Type
    Journal Article
    Citations
    De Bei, R., Wang, X., Papagiannis, L., Fuentes, S., Gilliham, M., Tyerman, S. & Collins, C. (2020). Shoot thinning of Semillon in a hot climate did not improve yield and berry and wine quality. OENO ONE, 54 (3), pp.469-484. https://doi.org/10.20870/oeno-one.2020.54.3.2984.
    Access Status
    Access this item via the Open Access location
    URI
    http://hdl.handle.net/11343/254266
    DOI
    10.20870/oeno-one.2020.54.3.2984
    Open Access URL
    http://doi.org/10.20870/oeno-one.2020.54.3.2984
    Abstract
    <jats:p>Aim: Shoot thinning is a common canopy management practice used to obtain a desired shoot density and to improve canopy microclimate. Since thinning is often carried out manually, the cost can be high. In this study the effect of severe shoot thinning (50 % of shoots removed) applied at EL 15 was investigated by comparing yield components, canopy size, berry and wine chemistry, and sensory attributes to a non-thinned control for the variety Semillon. The objective was to determine whether shoot thinning could change canopy architecture and lead to improved fruit and wine chemistry and sensory characteristics.Methods and results: The trial was carried out over four consecutive growing seasons (starting in 2014-15) in the Semillon block of the Coombe vineyard (Waite Campus, the University of Adelaide). Canopy architecture was monitored at key phenological stages in each season and yield components were assessed at harvest. The harvested fruit was used for chemical and sensory analysis of the berries. Wines were made and their chemistry and sensorial attributes assessed. Shoot thinning reduced the total leaf area in only two of the four seasons, but single shoot leaf area and cane weight were higher in shoot-thinned vines in all seasons. Shoot thinning did not reduce yield, despite a large reduction in bunch number, because of increased bunch weight. Shoot thinning did not change berry and wine chemistry. Similarly, little differences were observed in the sensory profile of berries and wines, and the assessors preferred the wines obtained from shoot thinned vines in the last season only.Conclusions: In this study, shoot thinning increased the leaf area per shoot and the cane weight, but yield and grape and wine chemistry were unaffected. The vine balance indices leaf area/yield and yield/pruning weight were also unaffected by the treatment, despite its intensity (50 % of shoots removed).Significance and impact of the study: The practice of shoot thinning when applied at EL stage 15 (8-9 leaves separated) was not effective as a technique to improve canopy microclimate and berry and wine chemistry for the white variety Semillon in a hot Australian climate. By not applying shoot thinning growers could potentially make significant savings without affecting yield or wine properties. Further research is needed to explore the effect and timing of shoot thinning on other varieties and in different environments.</jats:p>

    Export Reference in RIS Format     

    Endnote

    • Click on "Export Reference in RIS Format" and choose "open with... Endnote".

    Refworks

    • Click on "Export Reference in RIS Format". Login to Refworks, go to References => Import References


    Collections
    • Minerva Elements Records [45770]
    • Agriculture and Food Systems - Research Publications [542]
    Minerva AccessDepositing Your Work (for University of Melbourne Staff and Students)NewsFAQs

    BrowseCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects
    My AccountLoginRegister
    StatisticsMost Popular ItemsStatistics by CountryMost Popular Authors