terclim by ICS banner
IVES 9 IVES Conference Series 9 Development of a semi-controlled setup for manipulating drought and heat stress in open field trials

Development of a semi-controlled setup for manipulating drought and heat stress in open field trials

Abstract

Drought and heat stress will pose challenges for the future of viticulture and wine quality, as grapevine biological processes are pushed beyond their optimum conditions. Efforts are increasing to study and predict the effects of drought spells and heatwaves on grapevine physiology and resulting harvest quality. This calls for the development of adequate systems to induce and manipulate the required stress, especially in open field trials where conditions are more difficult to control. We present a semi-controlled system for studying drought and heat stress in grapevine in the field. The system uses automatic weighing mini-lysimeters to record whole-plant evapotranspiration throughout the growing season and manage deficit irrigation programs for drought trials, as well as infrared lamps to heat the cluster zone above ambient temperature. Drought stress was imposed at 25% soil field capacity for 9 days, during which a heat stress of 5 days was induced with infrared lamps set to 800W at 30cm from the fruiting cane. Grapevine ecophysiology was monitored throughout the experimental period. The system successfully allowed us to control grapevine evapotranspiration, lowering both leaf stomatal conductance (gsw) and midday stem water potential (Ψstem), as well as increase berry surface temperatures, with a mean increment of 3.6°C. These results provided insight into the efficacy of the system in imposing stress in the field, as well as into possible further improvements for the setup, taking into consideration the constraints of the system as well as undesired effects of changing weather during the experiment.

Download the abstract

DOI:

Publication date: June 14, 2024

Issue: Open GPB 2024

Type: Article

Authors

Jacopo Innocenti1*, Elena Farolfi1, Francesco Flagiello1, Rudi Rizzoli1, Soma Laszlo Tarnay1, Astrid Forneck1, José Carlos Herrera1

1 Institute for Viticulture and Pomology, University of Natural Resources and Life Sciences (BOKU), Konrad-Lorenz Straße, 3430, Tulln an der Donau, Austria

Contact the author*

Keywords

abiotic stress, climate change, heatwaves, phenotyping, method development

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

Application of regenerative agriculture to viticulture: The REVINE project

Conventional viticulture improved the quality of production, but the economic costs can be unsustainable. Today, producers need to consider consumers’ demands for healthy, eco-friendly products. Institutions promote sustainable agriculture, with regenerative agriculture being the latest generation of methodologies focused on recovering losses and ensuring future sustainability. The revine project studies regenerative agricultural technology applied in mediterranean countries to provide precise indications for soil processing and effective vineyard treatments.

Read More

FACTORS AFFECTING QUERCETIN SOLUBILITY IN SANGIOVESE RED WINE: FIRST RESULTS

Quercetin (Q) is present in grape in form of glycosides and as aglycone. These compounds are extracted from grape skins during winemaking. In wines, following the hydrolysis reactions, the amount of quercetin aglycon can exceed its solubility value. Unfortunately, a threshold solubility concentration for quercetin in wine is not easy to determine because it depends on wine matrix (Gambuti et al., 2020).

Read More

Reconfiguring wine prescription : from traditional critics to digital social networks

The integration of digital social networks (DSN) has profoundly transformed communication practices within the wine industry, reorganizing the dynamics of prescription and marketing.

Read More

Measures to promote biodiversity in viticulture—how do socio-economic factors influence implementation?

Context and purpose. In Germany, vineyards are typically intensively managed monocultural systems shaped by low structural variability.

Read More

Viticultural heritage in mountain territories of Catalonia: prospecting in the region of Osona, northern Spain

The recovery of ancestral or minority vine varieties has been gaining great interest in recent years, among other reasons because it is likely that some of these varieties, due to the fact that they are found in relict areas, have a greater potential for adaptation to external factors (biotic or abiotic) and can minimize the effects that climate change is causing in viticulture. Varieties that can be grown at altitude are currently being sought to combat rising temperatures and prolonged extreme drought conditions. In Catalonia, the Pyrenean expansion of vineyard cultivation is documented from the 10th century and has been related to the “small climatic optimum” (9th-12th centuries) and also to seigniorial power.[1] But different adverse climatic periods and the arrival of Phylloxera by the late 19th century made many of these crops disappear.[2]

Read More