Jasse, A.; Berry, A.; Aleixandre Tudo, J.; Poblete-Echevarría, C. (2021). Intra-block spatial and temporal variability of plant water status and its effect on grape and wine parameters. Agricultural Water Management. 246:1-12. https://doi.org/10.1016/j.agwat.2020.106696
Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10251/182970
Title:
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Intra-block spatial and temporal variability of plant water status and its effect on grape and wine parameters.
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Author:
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Jasse, Aladino
Berry, Anke
Aleixandre Tudo, José
Poblete-Echevarría, Carlos
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UPV Unit:
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Universitat Politècnica de València. Departamento de Tecnología de Alimentos - Departament de Tecnologia d'Aliments
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Issued date:
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Abstract:
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[EN] Improving wine composition is a critical factor for the wine industry. Phenolic compounds play an important role in wine composition contributing to its organoleptic characteristics. Although several factors can ...[+]
[EN] Improving wine composition is a critical factor for the wine industry. Phenolic compounds play an important role in wine composition contributing to its organoleptic characteristics. Although several factors can influence the phenolic concentration, plant water status in particular has shown to have a direct impact on the phenolic compounds. It is however complex to quantitate water deficit by plant water status measurements as they depend on the specific site (topography, viticultural management practices and soil characteristics) creating variable values within the vineyard block. This study focused on analysing the effect of natural spatial and temporal variability of plant water status on grape and wine parameters. A field experiment was done in a commercial Cabernet Sauvignon block to monitor the temporal and spatial intra-block variability of plant water status using a grid sample method. Soil analysis and topography were included in the evaluation. Each target vine was assessed for yield, ripeness as well as standard juice parameters. Micro-vinification was done for each target vine and the concentration of anthocyanins and tannins analysed. The results showed that the spatial and temporal variability was evident along the season. Plant water status influenced changes in the concentration of phenolic compounds and grape parameters. The vines in the stressed class were associated with changes in soil texture and topography. These plants presented a moderate increase (6.7%) in sugar content; a significant increase in anthocyanins (22.2%) and tannins (27.5%); and a strong reduction in yield (53.2%) when compared with the non-stressed classes. The results of this study may help to understand and quantify how spatial variability is naturally distributed and its effect on grape and wine parameters.
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Subjects:
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Anthocyanins
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Tannins
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Yield
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Cabernet Sauvignon
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Stem water potential
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Micro-vinification
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Spatial variability
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Temporal variability
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Copyrigths:
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Reconocimiento - No comercial - Sin obra derivada (by-nc-nd)
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Source:
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Agricultural Water Management. (issn:
0378-3774
)
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DOI:
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10.1016/j.agwat.2020.106696
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Publisher:
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Elsevier
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Publisher version:
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https://doi.org/10.1016/j.agwat.2020.106696
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Thanks:
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The research was funded by WINETECH (Wine Industry Network of Expertise and Technology) - Water programme "Grapevine production with limited water resources", project Fship Water 1. We thank the Thelema Mountain vineyards, ...[+]
The research was funded by WINETECH (Wine Industry Network of Expertise and Technology) - Water programme "Grapevine production with limited water resources", project Fship Water 1. We thank the Thelema Mountain vineyards, especially to Mr Victor Rossouw (Farm manager) for the logistic support to the project. Also, we want to thank the Department of Viticulture and Oenology especially Talitha Venter and Melanie Vivier for helping in the coordination of field operations and the members and interns of the Digital Viticulture Research Group (Maria Victoria Munafo, Sergio Velez, Lise Charels, Lisbeth Castor, Stenford Matsikidze, and Jaco Luus) for helping in the data collection during this study.
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Type:
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Artículo
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