Does Full Exposure of Clusters Have Any Negative Effects on Tempranillo (Vitis vinifera L.) Grape Quality in La Rioja, Spain? The Use of Severe Cluster-zone Leaf Removal after Berry Set

Wu, Zheng; García, Julia Alonso; Balda, Pedro; Toda, F. Martínez de

doi:10.21548/38-2-1620

Cited by 5 publications

(4 citation statements)

References 29 publications

(25 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Because of the problems facing winemakers in this scenario, new vineyard management strategies are being explored to mitigate these negative impacts, with the aim of delaying sugar ripening, allowing for the accumulation of greater levels of tannins, anthocyanins, and other flavour components before picking [8][9][10][11]. Leaf removal is a useful management strategy to this end, as along with being a technique to balance the ratio between fruit load and vegetation, it enables the manipulation of canopy microclimate, allowing for some important grape quality improvements [12,13]. The rate of grape sugar accumulation is dependent on the ratio of leaf area to yield (LA/Y), and sugar accumulation can be delayed by reducing leaf area, effectively manipulating the source/sink ratio of the vine [14,15].…”

Section: Introductionmentioning

confidence: 99%

Leaf Removal Applied to a Sprawling Canopy to Regulate Fruit Ripening in Cabernet Sauvignon

O’Brien

Collins

Bei

2021

Plants

View full text Add to dashboard Cite

Under the effects of climate change, it is becoming increasingly common to observe excessively fast grape sugar accumulation while phenolic and flavour development are lagging behind. The aim of this research was to quantify the impacts of three different leaf removal techniques on the canopy architecture and ripening of Cabernet Sauvignon trained in a sprawl trellis system. Treatments were performed at veraison (~14 °Brix) and included (i) control; (ii) leaf plucking in the bunch zone; (iii) leaf plucking the top two-thirds of shoots, apical to the bunches; and (iv) shoot trimming. On the date of harvest, no significant difference in total soluble solids was observed between treatments. Other results including the effect of the treatments on fruit acidity, anthocyanins, phenolics, and tannins were somewhat inconclusive. While various other studies have shown the potential of leaf removal to achieve slower grape sugar accumulation without affecting the concentration of anthocyanins, phenolics, and tannins, the results of this study do not indicate a decrease in the rate of grape sugar accumulation as a result of the investigated defoliation techniques. Given the cost of implementing these treatments, the results of this study do not support the use of these methods for the purpose of delaying fruit ripening in a hot Australian climate.

show abstract

Section: Introductionmentioning

confidence: 99%

Leaf Removal Applied to a Sprawling Canopy to Regulate Fruit Ripening in Cabernet Sauvignon

O’Brien

Collins

Bei

2021

Plants

View full text Add to dashboard Cite

show abstract

“…However, future climatic scenarios report a decrease of 0.41–0.49 °C per 100 m at the end of this century 33 . The vineyard orientation and slope also may be taken into account when planting a vineyard since the winegrowers do not generally have other colder or higher altitude areas available for grapevine cultivation 11,34–37 . With respect to the vineyard exposure, the exposures least favorable to solar radiation should be chosen to obtain grapes with low sugar content.…”

Section: Introductionmentioning

confidence: 99%

Strategies in vineyard establishment to face global warming in viticulture: a mini review

Gutiérrez‐Gamboa

Toda

2020

J Sci Food Agric

View full text Add to dashboard Cite

Different technological solutions are developing in the wine industry to mitigate the negative effects of the current global warming to mainly achieve wines with a lower alcohol content. These proposed solutions mostly act at the oenological level and are focused on intervening in the raw material to be transformed; that is, on reducing the concentration of sugar in the must using filtration techniques or also on wine dealcoholizing by physical processes. These techniques are intended to offer solutions and respond to new consumer expectations, but they may be considered too artificial to be widely accepted. In this way, viticultural strategies may offer a natural solution to obtain grapes with low sugar content, maximizing their quality by delaying ripening. This mini review surveys the viticultural strategies that can be applied in the establishment of a vineyard – that is, when it comes to planting of a new vineyard – such as vineyard altitude, latitude, orientation, and slope, as well as rootstock, variety, clone, training system, and row orientation and slope, with the aim to mitigate the negative effects of climate change on grape and wine quality and to delay grape maturation. Finally, we propose a ponderation of the strategies discussed to contextualize its importance to face global warming in viticulture. © 2020 Society of Chemical Industry

show abstract

“…Then again, elevated CO 2 (eCO 2 ), one driver of climate change, may change bunch architecture (i.e., longer bunches), which might affect sun exposure, and increase growth of secondary lateral shoots, but periods of high temperatures may weaken this effect (Wohlfahrt et al, 2018). Obviously, both statements neglect effects of adapted management practices (Stoll et al, 2010;Zheng et al, 2017;Gatti et al, 2018;Valentini et al, 2018Valentini et al, , 2021Bei et al, 2019;Lavado et al, 2019;Hunter et al, 2020;Gutiérrez-Gamboa et al, 2021;Martinez De Toda, 2021;Naulleau et al, 2021;Schäfer et al, 2021) and other limiting factors like reduced soil water availability (Lopes et al, 2018). Thus, eCO 2 might reduce sunburn risks in the later season because of shading berries by increased lateral leaf area, but high temperatures might attenuate the positive effect.…”

Section: Introductionmentioning

confidence: 99%

“…Again, if we expect more heatwaves due to climate change, this would shorten and reduce the time windows of leaf removal for protection against sunburn. In addition, strategic decisions such as row orientation, cultivar choice, and trellis system might interplay with the above-mentioned scenarios (Palliotti, 2011;Hunter et al, 2016Hunter et al, , 2017Zheng et al, 2017;Bernardo et al, 2018;Leeuwen et al, 2019;Chopard et al, 2021;Kurtural and Fidelibus, 2021;Sargolzaei et al, 2021). For example, in northsouth oriented rows sunburn occurs often just on the west side of the rows (Spayd et al, 2002;Gambetta et al, 2021) due to an unbalanced temperature distribution with heat peaks in the afternoon (Lopes et al, 2018;Strack et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Missing Links in Predicting Berry Sunburn in Future Vineyards

2021

View full text Add to dashboard Cite

Sunburn in grapevine berries is known as a recurring disorder causing severe yield losses and a decline in berry quality. The transition from healthy to sunburnt along a temporal trajectory is not fully understood. It is driven by light-boosted local heat impact and modulated by, e.g., past environments of the berry and its developmental state. Events of berry sunburn are often associated with heatwaves, indicating a link to climate change. In addition, the sensitivity of grapevine architecture to changing environmental condition indicates an urgent need to investigate and adapt mitigation strategies of berry sunburn in future vineyards. In this perspective, we want to identify missing links in predicting berry sunburn in vineyards and propose a modeling framework that may help us to investigate berry sunburn in future vineyards. For this, we propose to address open issues in both developing a model of berry sunburn and considering dynamic canopy growth, and canopy interaction with the environment and plant management such as shoot positioning or leaf removal. Because local environmental conditions drive sunburn, we aim at showing that identifying sunburn-reducing strategies in a vineyard under future environmental conditions can be supported by a modeling approach that integrates effects of management practices over time and takes grapevine architecture explicitly into account. We argue that functional-structural plant models may address such complex tasks. Once open issues are solved, they might be a promising tool to advance our knowledge on reducing risks of berry sunburn in silico.

show abstract

Does Full Exposure of Clusters Have Any Negative Effects on Tempranillo (Vitis vinifera L.) Grape Quality in La Rioja, Spain? The Use of Severe Cluster-zone Leaf Removal after Berry Set

Cited by 5 publications

References 29 publications

Leaf Removal Applied to a Sprawling Canopy to Regulate Fruit Ripening in Cabernet Sauvignon

Leaf Removal Applied to a Sprawling Canopy to Regulate Fruit Ripening in Cabernet Sauvignon

Strategies in vineyard establishment to face global warming in viticulture: a mini review

Missing Links in Predicting Berry Sunburn in Future Vineyards

Contact Info

Product

Resources

About