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Berry thinning of grapes

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Published by Agricultural Experiment Station in Berkeley, Cal .
Written in English


  • Thinning,
  • Grapes

Book details:

Edition Notes

Cover title.

StatementA.J. Winkler
SeriesBulletin -- no. 492, Bulletin (California Agricultural Experiment Station) -- 492.
The Physical Object
Pagination22 p. :
Number of Pages22
ID Numbers
Open LibraryOL25228493M

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The berry thinning was a useful practice to reduce bunch size and to alter bunch shape for improving fruit quality. The grape cv. 'Muscat Bailey A' bunches were removed to find berry thinning. Grape Thinning. As soon as it is To get a bunch just right the thinner must carry in his head an idea of the size the finished berry should be, and enough berries must be left so that when the bunch is cut and laid on a plate it will retain its shape. This is a most important point, for a . A field experiment was therefore conducted to study the effect of cluster clipping and berry thinning on yield and quality of Thompson Seedless grapes grafted on Dogridge rootstock. The clusters were retained (75, 65 and 50%) by clipping the remaining portion by following standard practices of thinning of rachis of the bunch. about the effect of berry size and yield on grape and wine quality. Even if berry size and crop yield are widely recognized as important factors in the quality of resultant wines, most prior research has shown no effect of yield on wine quality, and the direct effect of berry size has not been evaluated. Recently, some pruning, thinning and irri-.

Problems Reasons and Analysis of Berry Cracking in Grapes Grapes New Methods and Research in Grape Cultivation Grapes Thinning and Berry management of Grapes.   Berry Thinning of Grapes Berry thinning removes half of the cluster to allow the remainder enough space to develop larger. Berry thinning is done shortly after cluster thinning and should leave four to five stems on the lower part of the cluster’s stem. When the berries are as large as BB’s, they need to be hand thinned. The impact of shoot thinning on grape/wine quality appear to be less consistent than the benefits listed above. Research has shown that berry, must, and wine composition of Pinot noir and Cabernet franc were impacted by shoot thinning, however these differences did not have a significant impact on the sensory attributes (Reynolds et al, ). In vinifera grapes, such as 'Cabernet Sauvignon' and 'Merlot', bunch thinning in combination with berry thinning has been shown to have a great effect on the total phenolic concentration of wine.

ABSTRACT: The berry-cluster thinning technique was evaluated at different phenological times to prevent bunch compactness of ‘Black Star’ table grape, a new somatic mutation of ‘Brasil’ grape. The trial was carried out during and seaons in a vineyard situated in Marialva, PR, Brazil. The book, "The California Master Gardener Handbook" advises that a half pound of ammonium sulfate can be applied for each vine at berry set (when the berries are about a quarter-inch big, usually in May). Remember, though, that too much nitrogen can result in too much vine growth and not enough grapes . In general, important methods of cultivation for increasing the quality of the grape are shoot thinning, desuckering, shoot positioning and topping, basal leaf removal, girdling, cluster thinning and berry thinning. In this study the influence of cluster thinning was investigated to set standards for management for the grape cultivar Doonuri. The practice and methods of berry thinning are discussed fully in Bulletin , ^' Berry Thinning of Grapes." Berry thinning further slightly increases the size of the berries and slightly hastens ripening.