Agronomical and Chemical Effects of the Timing of Cluster Thinning on Pinot Noir (Clone 115) Grapes and Wines

A two-year study was performed to evaluate the effects of the timing of cluster thinning on Pinot noir grapes and wines in the central coast of California. Vines were thinned to one cluster per shoot at three selected time-points during the growing season, and fruit was harvested and made into wine....

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Bibliographic Details
Published in:Fermentation (Basel) 2018-09, Vol.4 (3), p.60
Main Authors: Mawdsley, Paul, Dodson Peterson, Jean, Casassa, L.
Format: Article
Language:English
Subjects:
Central Coast of California
cluster thinning
crop load
Cultivars
Phenolic compounds
Pinot noir
Polyphenols
Ripening
Studies
Thinning
vine balance
Vines
Vineyards
Wine
Wines
yield manipulation
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Summary:A two-year study was performed to evaluate the effects of the timing of cluster thinning on Pinot noir grapes and wines in the central coast of California. Vines were thinned to one cluster per shoot at three selected time-points during the growing season, and fruit was harvested and made into wine. No consistent effect of cluster thinning was found in wine phenolic profile or color across a cool (2016) and a warm (2017) growing season. The growing season had a more significant effect than the cluster thinning treatment for most parameters measured. There was no detectable overall sensory difference between the non-thinned control wines and any of the thinned treatment wines. Based on current results, Pinot noir vineyards on the central coast of California can support crop loads that result in Ravaz Index values from 3 to 6 without concern for impacting ripening potential or negatively affecting fruit composition.
ISSN:2311-5637
2311-5637
DOI:10.3390/fermentation4030060