Terroir 2006 banner
IVES 9 IVES Conference Series 9 Monitoring water deficit in vineyards by means of Red and Infrared measurements

Monitoring water deficit in vineyards by means of Red and Infrared measurements

Abstract

Vineyard water availability is one of the most important variables both in plant’s production and wine quality, once it regulates several processes, among which the stomata activity. To avoid water deficit, wine producers introduced artificial irrigation in their vineyard, using a semi-empirical process to calculate water amount. Some previous research presented measurements in the infrared wave bands and PAR (photosynthetic active radiation) as a process to estimate water stress and to calculate water needs. This paper analyses and explores the relationship that could be established between red, infrared and PAR in vegetation indices calculation and leaf area index and the relationship between these indices and water availability or deficit. Data from this process could be used to design irrigation schemes, saving water and controlling vineyards needs.

DOI:

Publication date: December 22, 2021

Issue: Terroir 2006

Type: Article

Authors

Fernando ALVES (1), Fernanda ALMEIDA (1), Moutinho PEREIRA (2) Nuno Magalhães (3) and Jose ARANHA (4)

(1) ADVID – Assoc. Desenv. Viticultura Duriense, Peso da Regua, Portugal
(2) Dept. Eng. Biológica e Ambiental / CETAV, UTAD, Vila Real, Portugal
(3) Dept Fitotecnia, UTAD, Vila Real, Portugal
(4) Dept. Florestal, UTAD, Vila Real, Portugal

Contact the author

Keywords

vineyards, water deficit, red and infrared, vegetation Index (NDVI)

Tags

IVES Conference Series | Terroir 2006

Citation

Related articles…

FIRST APPLICATION OF LACHANCEA THERMOTOLERANS IN THE FERMENTATION OF “VINO SANTO” AS BIOLOGICHAL ACIDIFIER.

The exploitation of secondary metabolic pathways of non-Saccharomyces yeasts is a promising approach to protect traditional wines from the ongoing climate change, which can alter their peculiar features by modifying the chemical composition of grape musts. In this regard, an interesting example is the sequential inoculum of Lachancea thermotolerans and Saccharomyces. Cerevisiae. The aim of the sequential inoculum is to increase titratable acidity by lactic acid accumulation, to lower pH and to reduce the alcohol and acetic acid content in wine.

Climate, Viticulture, and Wine … my how things have changed!

The planet is warmer than at any time in our recorded past and increasing greenhouse emissions and persistence in the climate system means that continued warming is highly likely. Climate change has already altered the basic framework of growing grapes for wine production worldwide and will likely continue to do so for years to come. The wine sector can continue to play an important role in leading the agricultural sector in addressing climate change. From developing on…

The exploitation of Croatian grapevine genetic resources for the breeding of new resistant cultivars 

Croatian viticulture is mainly based on native grapevine varieties susceptible to various diseases and pests, which leads to unsustainable use of large amounts of pesticides. The sustainable development of viticulture in the future will only be possible by increasing the resistance of the grapevine through the development of new resistant varieties. Breeding programs have been launched in the leading wine-growing countries to develop resistant varieties possessing high-quality levels. Native cultivars from Croatia are not included in the breeding programs of other countries.

Distribution analysis of myo and scyllo-inositol in natural grape must

s it is well known, myo and scyllo-inositol are two characteristic sugars of grape must and, for this reason, their quantification has been proposed to control the authenticity of the concentrated and rectificated grape must.

“Silex vitioeno module porte-greffe”: an information system to gather experimental results on grapevine rootstocks

Maintaining stable yields and quality over time is a major challenge for the wine industry. Within the context of climate change, the choice of the rootstock is an important lever for adapting to current and future climatic conditions. Within a vineyard, the choice of the rootstock depends on the environmental conditions, the scion variety and the objectives of production. Many experimental data on the performances of rootstock already exist and can guide our decision-making.