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March 30, 2026Australian Journal of Grape and Wine ResearchOpen Access

Long‐Term Industrial‐Scale Study on Regulated Deficit Irrigation′s Effect on Flavonoid and Volatile Composition in Cabernet Sauvignon (Vitis Vinifera L.) Grapes

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Authors

SVSebastián VargasUniversity of TalcaSOSamuel Ortega-FaríasUniversity of TalcaVLV. Felipe LaurieUniversity of Talca

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Implication

Long-term industrial-scale study shows regulated deficit irrigation enhances grape quality, indicating effective irrigation management for vineyards.

Key Points

  • This study investigates the effects of regulated deficit irrigation on grape yield and composition over five years.
  • Five-year experiment with three RDI regimes and a control in Maule Valley, Chile.
  • Measured midday stem water potential, yield components, and grape volatile and phenolic composition.
  • Utilized a flux tower for actual evapotranspiration assessment.
  • RDI reduced yield primarily due to smaller and fewer berries.
  • Higher concentrations of anthocyanins, tannins, and certain flavonols were observed in water-restricted treatments.
  • Positive increases in grape aromas were noted in the most restrictive RDI treatments.

Cite This Study

Vargas et al. (2026) studied this question.

synapsesocial.com/papers/69ca1369883daed6ee095506https://doi.org/10.1155/ajgw/7730584
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Also Consider

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  1. 1Radiation-associated effects on regulated deficit irrigation management in grapevine cv. Cabernet Sauvignon2024
  2. 2Long-term impact of deficit irrigation on the physical quality of berries in ‘Crimson Seedless’ table grapes2024
  3. 3Physiological, Productive, and Soil Rhizospheric Microbiota Responses of ‘Santina’ Cherry Trees to Regulated Deficit Irrigation Applied After Harvest2025
  4. 4Physiological, Productive, and Soil Rhizospheric Microbiota Responses of ‘Santina’ Cherry Trees to Regulated Deficit Irrigation Applied After Harvest2025
  5. 5Impact of irrigation regimes on grapevine yield and water stress indicators assessed by remote sensing2026