Intervention effectmodel-written summary

Thinning to 10 clusters per vine produced the lowest yield.

A claim from A Five-year Study on the Effect of Cluster Thinning on Yield and Fruit Composition of `Chambourcin' Grapevines · 2006

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Taxon: Vitis sp.Vitise1
Material: `Chambourcin'e1
Treatment: thinning to 10 clusters per vinee0
Outcome: yielde0
Direction: loweste0

Not reportedGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

*Vitis* · Taxon · picture of the genus (one of its species)Victor M. Vicente Selvas · Public domain · Wikimedia Commons ↗

Verbatim

e0
“thinning to 10 clusters per vine (or 8 clusters per meter of row) produced the lowest yield but the highest vine size with the most optimum fruit composition”
✓ located verbatim in the source · abstract, characters 678–835

e1
“`Chambourcin' ( Vitis sp.)”
✓ located verbatim in the source · abstract, characters 0–26

Title

A Five-year Study on the Effect of Cluster Thinning on Yield and Fruit Composition of `Chambourcin' Grapevines

Imed Dami; Dave Ferree; Anton Prajitna; et al. HortScience 2006. doi:10.21273/hortsci.41.3.586

Other claims from this paper (8)

Intervention effect Cluster thinning reduced yield per vine and crop load.
Intervention effect Cluster thinning increased pruning, cluster and berry weights.
Intervention effect Cluster thinning increased juice soluble solids and pH.
Intervention effect Cluster thinning did not improve juice acidity.
Intervention effect Thinning to 10 clusters per vine produced the highest vine size.
Intervention effect Thinning to 10 clusters per vine produced the most optimum fruit composition.
Observation The 10-cluster treatment yielded the most balanced vines over five years.
Recommendation Commercial production at the Northeast Ohio site was judged risky because harvest repeatedly coincided with first fall frost.

Record rev-cb6f2ac2de68f06e8e8074414f850c967321d0bfe5d24234f4d5b9185723c46c · schema claims-v0.9 · position 5 in the model’s answer

cluster · yield · VitisResults differ

22 papers: 12 positive, 10 negative or no effect

9 papers in the same direction as this claim · 12 in the opposite direction

positive
Berry weight was greatest when the crop was borne in three clusters per shoot rather than in a single cluster.
Berry Thinning and Cluster Thinning Influence Vegetative Growth, Yield, Fruit Composition, and Net Photosynthesis of ‘Seyval blanc’ Grapes · 1989 · compared with a single cluster
Opposite direction
positive
Pinching either shoots or flower clusters at full bloom significantly increased berry weight compared with untreated vines.
Effect of berry Thinning, CPPU spraying and pinching on cluster and berry quality of two grapevine cultivars · 2009 · compared with untreated ones
Opposite direction
positive
The lowest crop load, 23 clusters per vine, gave the highest bunch weight of 673.0 g.
Effect of cluster thinning on bunch yield, berry quality and biochemical changes in local clone of table grape cv. Jumbo Seedless (Nana Purple) · 2014
Opposite direction
positive
Secondary induced shoots maintained a stable number of bunches after removal of shoots and flower clusters.
Effects of Lateral or Secondary Induced Shoot Use on Number of Bunches and Fruit Quality in Forcing Cultivation by Current Shoot Cutting and Flower Cluster Removal to Shift Grape Ripening to a Cooler Season · 2022
Opposite direction
positive
Spraying the clusters with GA3 at 10 + 20 + 40 ppm gave the highest yield components in White Banaty grapevines.
Effect of spraying gibberellic acid and caffeic acid on yield and fruit quality of White Banaty (Thompson Seedless) grape cultivar · 2021
Opposite direction
positive
Removing 20 or 30% of clusters increased cluster weight.
Effect of Thinning Practices on Fruiting of Ruby Seedless Grapevine · 2017
Opposite direction
positive
Removing undesirable clusters increased berry and cluster weight.
IMPROVEMENTS IN BERRY QUALITY OF RUBY SEEDLESS AND BEAUTY SEEDLESS GRAPES · 2008
Opposite direction
positive
Bunch weight of Chenin Blanc increased to 112.88 g with the reduction to 40 clusters per vine.
Cluster thinning influences photosynthetic activity, fruit composition and wine quality of grapes under tropical environment · 2018
Opposite direction

13 papers more in this group

See all 22 papers →

pruning · yield · VitisPositive and negative results

107 papers: 71 positive, 36 negative or no effect

35 papers in the same direction as this claim · 71 in the opposite direction

positive
Removal of flowers on girdled shoots considerably increased percentage fruit-set.
The Effect of Removing Leaves, Flowers and Shoot Tips on Fruit-Set inVitis ViniferaL. · 1962
Opposite direction
positive
Girdling increased berry weight within each seed class by up to 14 percent.
Fruit Set and Development in Seeded Grape Varieties as Affected by Defoliation, Topping, Girdling, and Other Treatments · 1959 · compared with control
Opposite direction
positive
Girdling significantly increased berry size, cluster weight and yield per vine versus untreated control.
Girdling, Gibberellic Acid, and Forchlorfenuron: Effects on Yield, Quality, and Metabolic Profile of Table Grape cv. Italia · 2014 · compared with untreated control
Opposite direction
positive
Conversion yield was greater with post-fruit set leaf removal.
Effects of Leaf Removal and Applied Water on Flavonoid Accumulation in Grapevine (Vitis vinifera L. cv. Merlot) Berry in a Hot Climate · 2016
Opposite direction
positive
Girdling increased berry weight by about 0.8 g in both cultivars.
The Influence of Girdling and Gibberellic Acid Application at Fruitset on Ruby Seedless and Thompson Seedless Grapes · 1987
Opposite direction
positive
Shoot topping increased fruitset and yield per vine in grapevines.
Response of fruitset and other yield components to shoot topping and 2-chlorethyltrimethyl-ammonium chloride application · 2009
Opposite direction
positive
Girdling after fruit set significantly increased berry weight and yield of Italia grapes.
Effects of girdling and covering mesh on ripening, colour and fruit characteristics of ‘Italia’ grapes · 1998
Opposite direction
positive
Yield increased as pruning severity decreased.
Assessment of Winter Injury in Grape Cultivars and Pruning Strategies Following a Freezing Stress Event · 2011
Opposite direction

98 papers more in this group

See all 107 papers →

Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.

Other papers on the same question

cluster · yield · VitisResults differ

pruning · yield · VitisPositive and negative results