terclim by ICS banner
IVES 9 IVES Conference Series 9 Phenological stage dependency of Cabernet Sauvignon and Grenache response to water and nutrient limitation 

Phenological stage dependency of Cabernet Sauvignon and Grenache response to water and nutrient limitation 

Abstract

As the frequency and intensity of drought events increase, understanding the mechanisms of plant resilience to water deficit is crucial. To maintain an appropriate plant yield, a common practice is the application of high amounts of fertilizers with negative environmental impacts. The single and combined effect of water deficit and nutrient availability, namely nitrogen (N) and potassium (K), in Vitis Vinifera L. cv. Cabernet Sauvignon and Grenache was evaluated. Two-year-old grapevine plants grafted on SO4 rootstock were transferred in pots under semi-environmental conditions. During the growing season, plants were either maintained well-watered (100% ETc) or subjected to a controlled water deficit irrigation (33% ETc). Moreover, different N and K fertilization doses were applied: 100%N+100%K; 100%N+30%K; 30%N+100%K; and 30%N+30%K. Several morpho-physiological parameters were periodically evaluated, including plant growth rate, midday stem water potential, and gas exchange parameters. In addition, multi‑elemental analysis was conducted by collecting leaves at flowering, veraison, and maturity stage.

Early-season results showed significant effect of irrigation on stomatal conductance and transpiration rate, especially in Grenache. Multi-elemental data at flowering stage showed that plants mainly separated in response to irrigation treatment. Conversely, the physiological response and the nutrient composition at the maturity stage was strongly influenced by N fertilization.

The obtained results will improve the comprehension of the mechanisms involved in the signaling network of the interplay among water and nutrient acquisition.

PRIN 2022 PNRR: P20222XJKY; Agritech (PNRR MISSIONE 4 COMPONENTE 2, INVESTIMENTO 1.4 – D.D. 1032 17/06/ 2022, CN00000022); PSD Artificial Intelligence 2020-25, University of Udine.

Download the abstract

DOI:

Publication date: June 13, 2024

Issue: Open GPB 2024

Type: Poster

Authors

Gabriella Vinci1*, Alberto Calderan1,2, Arianna Lodovici1, Giovanni Anedda1, Matteo Bortolussi1, Marianna Fasoli3, Paolo Sivilotti1, Laura Zanin1

1Department of Food, Environmental, and Animal Sciences, University of Udine, 33100 Udine, Italy
2Department of Life Sciences, University of Trieste, 34127 Trieste, Italy
3Deparment of Biotechnology, University of Verona, 37134 Verona, Italy

Contact the author*

Keywords

viticulture, grapevine, abiotic stresses, nitrogen, potassium

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

A.O.C. huile d’olive de Nyons et olives noires de Nyons

A.O.C. huile d’olive de Nyons et olives noires de Nyons

Read More

Effects of urea and nano-urea foliar treatments on the aromatic profile of Monastrell wines

Foliar application of urea has proven to be an effective method for increasing the amino acid content in grapes, especially when the vineyard has additional nitrogen needs. These treatments can prevent problems of stucking fermentation during winemaking.

Read More

MOUSY OFF-FLAVOURS IN WINES: UNVEILING THE MICROORGANISMS BEHIND IT

Taints and off-flavours are one of the major concerns in the wine industry and even if the issues provoked by them are harmless, they can still have a negative impact on the quality or on the visual perception of the consumer. Nowadays, the frequency of occurrence of mousy off-flavours in wines has increased.
The reasons behind this could be the significant decrease in sulphur dioxide addition during processing, the increase in pH or even the trend for spontaneous fermentation in wine. This off-flavour is associated with Brettanomyces bruxellensis or some lactic acid bacteria metabolisms.

Read More

Climats: a model of terroir-based winegrowing recognized by UNESCO

In Burgundy, a climat has nothing to do with the weather but accurately designates a named vine plot, often centuries-old, which produces a singular wine. This wine is the combination of history, the natural environment (relief, type of soil, exposure to the sun), a grape variety and know-how going back thousands of years. The grapes of each climat are harvested separately and the wine is made from a single grape variety and has a unique name featured on the bottle. Romanée conti, clos de vougeot, montrachet, musigny, corton…

Read More

How different SO2 doses impact amino acid and volatile profile of white wines

Sulphur dioxide (SO2) is a well-established preservative in the wine industry. Its ability to act in different stages of the process as an antioxidant and an antiseptic as main characteristics makes it versatile. However, the need for its reduction or even its replacement has been increasing by the regulatory authorities as well as by the final consumer. To understand the impact of SO2 during ageing on volatile organic compounds (VOCs) and amino acids (AAs) profiles, two white wines (one varietal and one blend) were aged under the same conditions, in the presence of different doses of SO2. After fermentation (t=0), 0, 30, 60, 90 and 120 mg/L of SO2 were applied, wines were kept over lees for 3 months (t=3), then were bottled after 3 (t=6) and 9 (t=12) months.

Read More