News

Scientific publication: Post-Harvest Regulated Deficit Irrigation in Chardonnay Did Not Reduce Yield but at Long-Term, It Could Affect Berry Composition

Future increases in temperatures are expected to advance grapevine phenology and shift ripening to warmer months, leaving a longer post-harvest period with warmer temperatures. Accumulation of carbohydrates occurs during post-harvest, and has an influence on vegetative growth and yield in the following growing season. This study addressed the possibility of adopting regulated deficit irrigation (RDI) during post-harvest in Chardonnay. Four irrigation treatments during post-harvest were applied over three consecutive seasons: (i) control (C), with full irrigation; (ii) low regulated deficit irrigation for sparkling base wine production (RDIL SP), from harvest date of sparkling base wine, irrigation when stem water potential (Ψstem) was less than −0.9 MPa; (iii) mild regulated deficit irrigation for sparkling base wine production (RDIM SP), from harvest date of sparkling base wine, irrigation when Ψstem was less than −1.25 MPa; (iv) mild regulated deficit irrigation for wine production (RDIM W), from harvest data of wine, irrigation when Ψstem was less than −1.25 MPa. Root starch concentration in full irrigation was higher than under RDI. Yield parameters did not differ between treatments, but differences in berry composition were detected. Considering that the desirable berry composition attributes of white varieties are high in titratable acidity, it would seem inappropriate to adopt RDI strategy during post-harvest. However, in a scenario of water restriction, it may be considered because there was less impact on yield and berry composition than if RDI had been adopted during pre-harvest.

Download the full scientific article: Post-Harvest Regulated Deficit Irrigation in Chardonnay Did Not Reduce Yield but at Long-Term, It Could Affect Berry Composition

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How will climate change affect the viticulture in the coming decades in Europe?

Conclusions from the Decadal Projections Performance Report

Facing climate change and climate variability is one of the main challenges in viticulture. Developing strategic actions to adapt viticulture to the impacts of a warmer climate is one of the main interests of the sector, which has been suffering for changes in the quality and yield.

A report has recently been published by VISCA project Decadal projection performance report (D2.5) which provides a set of regional climate projections at European scale and at demosites of the project (Campania region, Mirabella Eclano Estate (Mastroberardino-Italy), Costers del Segre region, Raimat hills (Codorniu- Spain),  Douro Valley, Porto (Symington-Portugal)). These projections would bring an added value for the wine industry to plan long-term adaptation strategies to face climate change and a new climate variability in the coming decades.

First of all, EURO-CORDEX climate projections have been analysed in terms of their ability to reproduce the historical climate. As a result, it has been confirmed that EURO-CORDEX is representing correctly the temporal and spatial correlation of the main interesting variables such as mean temperature and precipitation, climate extremes such as droughts, spring frosts and heatwaves and, finally, specific agronomical parameters such the Winkler index.

After that, the analysis of climate projections at European scale and at demosites is providing by comparing the climatology off the period 2070-2099 against the historical period 1976-2005. In terms of precipitation, a decrease in the southern European countries, which is more intense in the summer months. In terms of temperature, there is a clear increase throughout Europe, although it is more intense in southern countries like Spain, Portugal, Italy, Greece and in norther countries like Sweden and Finland. Regarding extreme events, there is an increase of the length of droughts, especially in the Iberian Peninsula, a decrease of frost days in spring months and an increase of heatwaves, especially in the southern European countries.

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VISCA Announces Potential Spring Frost in Raimat: Vineyards Ready to Fight Negative Impacts!

VISCA DSS is integrating climate and agricultural models with farmers’ management specifications in order to design short practices, medium- and long-term adaptation strategies to climate change.

This April, VISCA DSS is predicting lower temperature events in Costers del Segre in the southwest slope of Raimat hills, where our Spanish demonstration site is located. This fall in temperature would lead to Spring Frost event causing some loss of shoots after budbreak. To avoid this loss, the activation of frost protection protocols was set on, a week in advance, on 26th March 2020. This information was obtained via the weather information widget of the DSS, and precisely the short & mid-term forecasts.

In order to reduce this effect, preventive irrigation was applied to the vineyards in this site.

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3 VISCA deliverables now available for download!

VISCA project has published recently 3 new public deliverables related to the analysis of climate projections at the European scale and particularly at the demosites of the project, report on a full year application of the CS-DSS and VISCA booklet presenting preliminary results.

You may download them below:

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VISCA at the SWISS Radio (SRF)

A radio interview has been recently made by Schweizer Radio und Fernsehen (SRF; English: Swiss Radio and Television) with VISCA consortium during the 3rd General Meeting and Stakeholder's Workshop. The interview discussed about climate change implications in vineyards and how our project is responding to these challenges and helping farmers adapt to climate change through providing climate services accessible via VISCA DSS.

You may listen to the interview by clicking on this link. VISCA interview starts in minute 40:40 (in German).

**SRF is a Swiss broadcasting company and one of the largest electronic media house of German-speaking Switzerland and has its main studios in Basel, Bern and Zürich.

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VISCA 3rd General Meeting & Stakeholders’ Workshop fruitfully concluded

Organised by the project coordinator, METEOSIM,  VISCA project held its 3rd General meeting on 9th-10th December 2019 followed by the Stakeholders Workshop on 11th December 2019 in Barcelona.

During the 3rd general meeting, the partners presented the current status of the project and the achieved milestones during the previous 32 months. They presented the preliminary results of the demonstration of VISCA DSS in the 3 demo sites with the end-users: Codorniu in Spain, Mastroberardino in Italy  and Symington in Portugal as well as the first results from the applied agronomic techniques: crop forcing and shoot trimming. The consortium agreed to focus on continuing the validation of the information provided by the DSS during the next harvesting season as well as to focus on exploitation, replicability and dissemination activities.

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Strong presence of VISCA project at SITEVI 2019

On 26 to 28 November 2019, SITEVI, an international equipment and expertise exhibition for the vine-wine, olive, fruit-vegetable productions, took place in  Montpellier, France attracting thousands of agricultural and wine-making stakeholders. VISCA project had a dedicated stand at the event in the 'start-up village' where hundreds visited the stand and learned about the project and the proposed solutions, mainly VISCA DSS. Many visitors showed interest in weather-related services and had several discussions on climate change adaptation in vineyards and replicability in other sectors.

  For more information, check the official website of the event.

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VISCA Newsletter #2: Discover our DSS & Join us at the Stakeholders Workshop in Barcelona!

The second issue of VISCA Newsletter is very special as it presents our Decision Support System which combines climate, phenology and irrigation services with several added values aiming to support viticulturists in climate change adaptation and daily operation. We’ve also launched the registration call to join our next workshop which will take place on 11th December 2019 in Barcelona.

Check it out here and subscribe to receive the next issue of our newsletter!

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Join VISCA Stakeholders Workshop 2019 & Register now!

The 3rd VISCA Stakeholders workshop will take place on 11th December 2019 in Barcelona. The event will present VISCA DSS where participants will get a free access to the tool. The event will host interesting exchanges and roundtables with the VISCA partners, Advisory Board members and external guests about the status-quo of climate services in the agriculture sector and the replicability opportunities in other vineyards as well as in olives and cereals. Check the agenda [link] and REGISTER to join us [link] either in Barcelona or online latest by December 5th at noon!


We look forward to welcoming you in our workshop, don’t hesitate to transfer this call for registration or send us any inquiries you may have to This email address is being protected from spambots. You need JavaScript enabled to view it.

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This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 730253.