IVES Conference Series

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Zoning of the Veneto region areas with Denomination of origin

Jan 12, 2022 | Application of zoning to increase the value of terroirs (Terroir 2006), IVES Conference Series, Terroir 2006

To characterize in depth the enological productions according to the origin territories and to provide modern tools for the qualitative raising of the assorted typologies of wine produced, Veneto Agricoltura (the regional agency for the agriculture, forestry and food industry development), the Regional Government of Veneto (north-eastern Italy) and various Consortia of Producers have undertaken since 2002 a systematic classification of the viticultural territories by agro-ecological zoning to achieve a strategic project aimed to set Veneto as the first Italian region to have completed in a systematic and scientifically rigorous way the zoning of most of its Denomination of Origin areas.

Recommended grapevine varieties for the vineyards zone Vrsac and trend meteorological elements

Jan 11, 2022 | IVES Conference Series, Terroir 2006, Vegetal material to enhance terroir expression (Terroir 2006)

The aim of this paper was to analyze trends of the meteorological elements and determine suitability of growing grapevine cultivar in viticulture region.

New technologies to characterize spatial variability in viticulture

Jan 11, 2022 | IVES Conference Series, Terroir 2006, The use of new technologies in terroir studies (Terroir 2006)

Measurements of parameters spatialy positionned, with on line sensors mounted on classical machinery or airborne imagery is no more a problem in viticulture. In a short time, high resolution data dedicated to the assessment of the vine characteristics, the soil, the harvest, etc. will become a reality.

Sugar loading and phenolic accumulation as affected by ripeness level of Syrah/R99 grapes

Jan 10, 2022 | IVES Conference Series, Terroir 2004

Le chargement et l’accumulation des sucres ainsi que la biosynthèse des phénols ont été étudiés sur la Syrah, dans le cadre d’un programme de recherche de paramètres qui permettraient de déterminer une ou plusieurs qualités de raisin en relation avec des styles de vins pour un terroir donné. La relation entre la dynamique d’accumulation des

Investigation on harvesting period choices for correct interpretation of experimental results

Jan 10, 2022 | IVES Conference Series, Terroir 2004

Happens too often in scientific papers to find the same harvesting period of a cultivar, although the used treatment influence a maturity curve of investigated thesis.
This inevitably leads to wrong conclusions when comparing the treatment effects, since obtained on maturity stages more or less far from those technologically correct.

Classification of the wine-growing environment of Central Mancha (Spain). First works

Dec 22, 2021 | IVES Conference Series, Soil component of terroir (Terroir 2006), Terroir 2006

This paper describes a zoning study performed on a vast territory of around 86,500 hectares, situated in the countryside area of La Mancha Central (Castilla-La Mancha). The aim of the study was to classify the environment according to a small number of ecological criteria, establish the relevant territorial units and generate thematic maps with the different levels of criteria employed and synthetic maps by crossing these criteria.

The impact of differences in soil texture within a vineyard on vine development and wine quality

Dec 22, 2021 | IVES Conference Series, Soil component of terroir (Terroir 2006), Terroir 2006

Marlborough Sauvignon Blanc has rapidly gained an international reputation for style and quality. The extent to which this can be attributed to the climate, soils or vineyard management is at present unclear. However, the young alluvial soils of the Wairau Plains are considered to play an important role in determining this unique wine style. Marked changes in soil texture occur on the Wairau Plains over short distances.

Results of late-wurmian to present-day climatic-geological evolution on to spatial variability of pedologic-geological characters of the AOC Gaillac terroirs (Tarn, Midi-Pyrénées)

Dec 22, 2021 | IVES Conference Series, Soil component of terroir (Terroir 2006), Terroir 2006

The AOC Gaillac area is divided into three main terroirs : « The left bank terraces », « The right bank coteaux » and
« The plateau Cordais ». This division is valid at a regional scale, but it suffers of a number of local-scale exceptions. This spatial variability of the pedologic-geologic characteristics at the plot scale has been derived mainly from the main late-Würmian solifluxion phase occurring at the transition between the peri-glacial climate and the Holocene temperate conditions (13,000-10,000 yrs BP).

The Soil Component of Terroir

Dec 22, 2021 | IVES Conference Series, Soil component of terroir (Terroir 2006), Terroir 2006

Evidence for a specific effect of soil mineral composition on wine character is largely anecdotal. However, soil potassium supply to the vine must be properly balanced between deficiency and excess for good fruit quality.

Soil or geology? And what’s the difference? Some observations from the New World

Dec 22, 2021 | IVES Conference Series, Soil component of terroir (Terroir 2006), Terroir 2006

Observational historical geology seeks to establish the evolutionary history of the surface of Earth. This approach is applicable not only to bedrock, but to the soft material that lies at the surface, the stuff called soil by most people. The geologic perspective provides a view of this material that is quite different from that of soil science, at least as practiced by many in America.

Viticultural characterisation of soils from triassic period at Beaumes-de-Venise (Côtes du Rhône, France)

Dec 22, 2021 | IVES Conference Series, Soil component of terroir (Terroir 2006), Terroir 2006

Wineries of Beaumes-de-Venise area make their best red wines with grapes from the “Triassic terroir”. This « terroir » is characterized by soils from the Triassic period. These specific soils are complex and quite heterogeneous. They originate from an eventful geological history to keep in mind to understand soils geographical distribution.

Characterization of spatial and temporal soil water status in vineyard by DC resistivity measurements

Dec 22, 2021 | IVES Conference Series, Terroir 2006, The use of new technologies in terroir studies (Terroir 2006)

We performed a DC resistivity monitoring experiment during eight months in 2003. Low, medium and high resolution measurements have been carried out at various locations of a vineyard. General apparent resistivity mapping evidences the spatial variations of the summer drying of the subsurface.

Characterization of vine vigor by ground based NDVI measurements

Dec 22, 2021 | IVES Conference Series, Terroir 2006, The use of new technologies in terroir studies (Terroir 2006)

Many farming operations aim at controlling the leaf area of the vine according to its load. There are several techniques, direct and indirect, of estimate of this leaf area in a specific way, but impossible to implement at great scales. These last years, research in airborne and satellite remote sensing made it possible to show that a multispectral index of vegetation, computed from measurements of reflectances (red and near infrared), the « Normalised Difference Vegetation Index » (NDVI), is well correlated to the « Leaf Area Index » (leaf area per unit of ground) of the vine. Nevertheless these methods of acquisition and processing data are rather constraining and complex.

Variability in the content of coarse elements in a viticultural plot in the Graves appellation: relationship with geophysical data

Dec 22, 2021 | IVES Conference Series, Terroir 2006, The use of new technologies in terroir studies (Terroir 2006)

Il a été souvent démontré (Seguin, 1970), que les meilleurs terroirs sont ceux qui présentent pendant la période de maturation du raisin, une régulation et une limitation de l’alimentation hydrique de la vigne. Si on s’intéresse aux facteurs influençant ce régime hydrique, on constate le rôle prépondérant du taux d’éléments grossiers non poreux qui limitent la réserve utile du sol en diminuant le taux de terre fine. De plus, ces éléments grossiers jouent également un rôle au niveau du pédo-climat thermique car leur conductivité thermique et leur chaleur spécifique sont plus élevées que celles de la terre fine. Ainsi le sol se réchauffera et se refroidira plus rapidement (Saini et McLean, 1967), (Gras, 1994).

Vine field monitoring using high resolution remote sensing images: segmentation and characterization of rows of vines

Dec 22, 2021 | IVES Conference Series, Terroir 2006, The use of new technologies in terroir studies (Terroir 2006)

A new framework for the segmentation and characterization of row crops on remote sensing images has been developed and validated for vineyard monitoring. This framework operates on any high-resolution remote sensing images since it is mainly based on geometric information. It aims at obtaining maps describing the variation of a vegetation index such as NDVI along each row of a parcel.

Complementarity of measurements of electric resistivity of soils and ΔC13 of must in studies and valorization of wine terroirs

Dec 22, 2021 | IVES Conference Series, Terroir 2006, The use of new technologies in terroir studies (Terroir 2006)

The correlations between vine water deficit cumulated over the ripening period of grapes, assessed by ΔC13 in must sugar, and the main analytic variables of grapes are significant. As a result ΔC13 is a useful tool in zoning homogeneous areas according to their technological qualities when harvesting.

Grape ripening timing as a base for viticultural zoning: an agro-ecological approach

Dec 22, 2021 | IVES Conference Series, Terroir 2006, The use of new technologies in terroir studies (Terroir 2006)

Due to the central role of the ripening timing in the evaluation of the varietal response to the environmental resources, a method to manage maturation curves has been developed. The method produces an index of veraison precocity and overcomes several methodological problems, like the visual evaluation of the veraison point and the multi-annual and multi-varieties data processing. It is based on a statistical and mathematical processing of the sugar ripening curves.

High resolution remote sensing for mapping intra-block vine vigour heterogeneity

Dec 22, 2021 | IVES Conference Series, Terroir 2006, The use of new technologies in terroir studies (Terroir 2006)

In vineyard management, the block is considered today as the technical work unit. However, considerable variability can exist inside a block with regard to physiological parameters, such as vigour, particularly because of soil heterogeneity. To represent this variability spatially, many measurements have to be taken, which is costly in both time and money. High resolution remote sensing appears to be an efficient tool for mapping intra-block heterogeneity.

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