ArticleFrontiers in chemistry2017
The Influence of Apical and Basal Defoliation on the Canopy Structure and Biochemical Composition of
Article in Frontiers in chemistry, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.
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Who cites it
12 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Effects of Basal Defoliation on Wine Aromas: A Meta-Analysis.Molecules (Basel, Switzerland) · 2018Pooled it
- Effect of canopy height and tree shape on anthocyanins accumulation in wine grape.Food chemistry. Molecular sciences · 2026Article
- Viticultural and Pre-Fermentation Strategies to Reduce Alcohol Levels in Wines.Foods (Basel, Switzerland) · 2025Review
- Non-Alcoholic Wines: Sensory Pleasantness and Health Benefits.Foods (Basel, Switzerland) · 2025Review
- Early Canopy Management Practices Differentially Modulate Fruit Set, Fruit Yield, and Berry Composition at Harvest Depending on the Grapevine Cultivar.Plants (Basel, Switzerland) · 2023Article
- Reducing the source/sink ratio of grapevine to face global warming in a semi-arid climate: Effects on volatile composition of Cabernet Sauvignon grapes and wines.Food chemistry: X · 2022Article
- Effects of Water Stress, Defoliation and Crop Thinning onMetabolites · 2022Article
- Effects of Defoliation Treatments of Babica Grape Variety(Molecules (Basel, Switzerland) · 2022Article
- Techniques for Dealcoholization of Wines: Their Impact on Wine Phenolic Composition, Volatile Composition, and Sensory Characteristics.Foods (Basel, Switzerland) · 2021Review
- Leaf Removal Applied to a Sprawling Canopy to Regulate Fruit Ripening in Cabernet Sauvignon.Plants (Basel, Switzerland) · 2021Article
- Modulation of volatile compound metabolome and transcriptome in grape berries exposed to sunlight under dry-hot climate.BMC plant biology · 2020Article
- Is vegetative area, photosynthesis, or grape C uploading involved in the climate change-related grape sugar/anthocyanin decoupling in Tempranillo?Photosynthesis research · 2018Article
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Authors and funding
6 authors.
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Abstract
Defoliation is a commonly used viticultural technique to balance the ratio between grapevine vegetation and fruit. Defoliation is conducted around the fruit zone to reduce the leaf photosynthetic area, and to increase sunlight exposure of grape bunches. Apical leaf removal is not commonly practiced, and therefore its influence on canopy structure and resultant wine aroma is not well-studied. This study quantified the influences of apical and basal defoliation on canopy structure parameters using canopy cover photography and computer vision algorithms. The influence of canopy structure changes on the chemical compositions of grapes and wines was investigated over two vintages (2010-2011 and 2015-2016) in Yarra Valley, Australia. The Shiraz grapevines were subjected to five different treatments: no leaf removal (Ctrl); basal (TB) and apical (TD) leaf removal at veraison and intermediate ripeness, respectively. Basal leaf removal significantly reduced the leaf area index and foliage cover and increased canopy porosity, while apical leaf removal had limited influences on canopy parameters. However, the latter tended to result in lower alcohol level in the finished wine. Statistically significant increases in pH and decreases in TA was observed in shaded grapes, while no significant changes in the color profile and volatile compounds of the resultant wine were found. These results suggest that apical leaf removal is an effective method to reduce wine alcohol concentration with minimal influences on wine composition.
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