Effects on grape and wine quality of bunch thinning of Merlot under Queensland conditions. Final report
Project report
Title | Effects on grape and wine quality of bunch thinning of Merlot under Queensland conditions. Final report |
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Report Type | Project report |
Authors | Kennedy, Ursula (Author), Learmonth, Robert (Author) and Hassall, Tony (Author) |
Institution of Origin | University of Southern Queensland |
Number of Pages | 19 |
Year | 2009 |
Publisher | Grape and Wine Research and Development Corporation |
Place of Publication | Adelaide, Australia |
Web Address (URL) | http://www.gwrdc.com.au/webdata/resources/project/RT_06-05-2.pdf |
Abstract | Merlot is a major wine grape variety in Queensland, and is commonly crop-thinned locally due to potentially high cropping. Timing of crop thinning has been shown to influence quality. We investigated pea size and veraison crop thinning effects on Merlot yield and quality in the Granite Belt and South Burnett in 2008. Under seasonal conditions experienced, crop thinning did not bring about increased fruit quality. In fact, thinning at pea size may decrease quality. Thinning caused super-optimal leaf area/yield ratios, suggesting under-cropping. As crop thinning may not enhance quality, we recommend thinning only if crop loads are exceptionally high. |
Keywords | grapevine; Merlot; crop-thinning; grape wine quality; vine-balance |
ANZSRC Field of Research 2020 | 300207. Agricultural systems analysis and modelling |
300805. Oenology and viticulture | |
310804. Plant developmental and reproductive biology | |
Public Notes | This publication is copyright. It may be reproduced in whole or in part for the purposes of study, research, or review, but is subject to the inclusion of an acknowledgment of the source. |
Byline Affiliations | Centre for Systems Biology |
Department of Primary Industries and Fisheries, Queensland |
https://research.usq.edu.au/item/q12wx/effects-on-grape-and-wine-quality-of-bunch-thinning-of-merlot-under-queensland-conditions-final-report
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