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Fermentation 2018, 4(3), 60; https://doi.org/10.3390/fermentation4030060

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

Wine and Viticulture Department, California Polytechnic State University, San Luis Obispo, CA 93407, USA
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Received: 16 June 2018 / Revised: 23 July 2018 / Accepted: 26 July 2018 / Published: 31 July 2018
(This article belongs to the Special Issue Wine Fermentation)
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Abstract

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. View Full-Text
Keywords: cluster thinning; yield manipulation; vine balance; crop load; Pinot noir; Central Coast of California cluster thinning; yield manipulation; vine balance; crop load; Pinot noir; Central Coast of California
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Mawdsley, P.F.W.; Dodson Peterson, J.C.; Casassa, L.F. Agronomical and Chemical Effects of the Timing of Cluster Thinning on Pinot Noir (Clone 115) Grapes and Wines. Fermentation 2018, 4, 60.

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