Intervention effectmodel-written summary

Leaf removal decreased yield per vine in Merlot.

A claim from Effects of Severity of Post-flowering Leaf Removal on Berry Growth and Composition of Three Red Vitis vinifera L. Cultivars Grown under Semiarid Conditions · 2012

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Taxon: Vitis vinifera L.Vitis viniferat0
Material: Merlote0
Treatment: Leaf removale0
Outcome: yield per vinee0
Direction: decreasede0

Not reportedGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier

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

*Vitis vinifera* · TaxonDarijanus · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0
“Leaf removal decreased yield per vine and cluster weight in Merlot and Sangiovese.”
✓ located verbatim in the source · abstract, characters 747–829

t0
“Vitis vinifera L.”
✓ located verbatim in the source · title, characters 96–113

Title

Effects of Severity of Post-flowering Leaf Removal on Berry Growth and Composition of Three Red Vitis vinifera L. Cultivars Grown under Semiarid Conditions

Yorgos Kotseridis; Afroditi Georgiadou; Panagiotis Tikos; et al. Journal of Agricultural and Food Chemistry 2012. doi:10.1021/jf300605j

Other claims from this paper (19)

Intervention effect Leaf removal decreased cluster weight in Merlot.
Intervention effect Leaf removal decreased yield per vine in Sangiovese.
Intervention effect Leaf removal decreased cluster weight in Sangiovese.
Intervention effect Increasing defoliation severity reduced cluster compactness in Merlot.
Intervention effect Defoliation decreased berry number per cluster in Merlot.
Intervention effect Berry fresh weight was unaffected by defoliation in Merlot.
Intervention effect Berry fresh weight was unaffected by defoliation in Sangiovese.
Intervention effect Leaf removal did not affect yield in Cabernet Sauvignon.
Intervention effect Leaf removal restrained berry size in Cabernet Sauvignon.
Association Seed mass followed berry mass variation except in Sangiovese.
Intervention effect Fruit zone leaf removal did not affect must soluble solids.
Intervention effect Fruit zone leaf removal increased titratable acidity only in Merlot.
Intervention effect Defoliation increased skin anthocyanins in Merlot, ordered FR above LR above ND.
Intervention effect Defoliation increased skin anthocyanins in Cabernet Sauvignon, ordered FR above LR above ND.
Intervention effect Defoliation significantly reduced seed flavan-3-ols.
Intervention effect Full leaf removal had lower seed flavan-3-ols than no defoliation in both varieties.
Intervention effect Lateral shoot removal gave the highest seed phenolic content in Sangiovese.
Intervention effect Post-flowering leaf removal improved overall berry composition in Merlot.
Intervention effect Post-flowering leaf removal improved overall berry composition in Cabernet Sauvignon.

Record rev-e1fd4ddd4da81053621ddd17df69976f41414d6e1f1607a11c33335d1268ebb6 · schema claims-v0.9 · position 1 in the model’s answer

pruning · yield · Vitis vinifera (wine grape)Positive and negative results

95 papers: 41 positive, 54 negative or no effect

53 papers in the same direction as this claim · 41 in the opposite direction

positive
Defoliation reduced berry size and cluster compactness.
Effects of Early Defoliation on Shoot Photosynthesis, Yield Components, and Grape Composition · 2006 · compared with non-defoliated shoots
Opposite directionCited by this paper
positive
Early defoliation before flowering limited yield per vine, cluster weight and cluster compactness compared with a non-defoliated control.
Early Leaf Removal to Improve Vineyard Efficiency: Gas Exchange, Source-to-Sink Balance, and Reserve Storage Responses · 2011 · compared with non-defoliated control
Opposite directionCited by this paper
positive
Late two-sided mechanical leaf removal increased cluster weight by 11.2% against control at KEW.
Use of Fruit Zone Leaf Removal With Vitis vinifera L. cv. Riesling Grapevines. II. Effect on Fruit Composition, Yield, and Occurrence of Bunch Rot (Botrytis cinerea Pers.:Fr.) · 1994 · compared with the control
Opposite directionCited by this paper
positive
At KEW, late two-sided mechanical removal increased cluster weight 11.2% over control.
Use of Fruit Zone Leaf Removal WithVitis viniferaL. cv. Riesling Grapevines. II. Effect on Fruit Composition, Yield, and Occurrence of Bunch Rot (Botrytis cinereaPers.:Fr.) · 1994 · compared with control
Opposite directionCited by this paper
no effect
Fruit-zone leaf removal did not affect berry size, cluster weight, or harvest yield.
Effect of Different Cluster Sunlight Exposure Levels on Ripening and Anthocyanin Accumulation in Nebbiolo Grapes · 2010
Same directionCited by this paper
negative
Defoliation significantly reduced yield in both grapevine varieties.
Impact of Early Leaf Removal on Yield and Fruit and Wine Composition ofVitis viniferaL. Graciano and Carignan · 2010
Same directionCited by this paper
negative
Preflowering defoliation reduced yield by about 35% versus no defoliation.
Timing and Intensity of Grapevine Defoliation: An Extensive Overview on Five Cultivars in Switzerland · 2019 · compared with vines with no defoliation
Same directionCites this paper
negative
Defoliated vines had reduced berry size, cluster weight, and yield per vine compared with non-defoliated controls.
Leaf removal and deficit irrigation have diverse outcomes on composition and gene expression during berry development of Vitis vinifera L. cultivar Xinomavro · 2023 · compared with irrigated and non-defoliated
Same directionCites this paper

86 papers more in this group

See all 95 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

pruning · yield · Vitis vinifera (wine grape)Positive and negative results