Terroir 2008 banner
IVES 9 IVES Conference Series 9 Radiative and thermal effects on fruit ripening induced by differences in soil colour

Radiative and thermal effects on fruit ripening induced by differences in soil colour

Abstract

One of the intrinsic parts of a vineyard “terroir” is soil type and one of the characteristics of the soil is it’s colour. This can differ widely from bright white, as for some calcareous soils, to red, as in “terra rossa” soils, or black, as in slate soils. The aim of this study was to assess how soil colour can influence vineyard microclimate and fruit properties including aroma precursors. After flowering, (BBCH 79) a loess-type soil (control) was covered with a thin layer of three different materials: a) black coarse slate, b) red clay brick, and c) white pumice. The vines (Vitis vinifera L. cvs. Riesling and Pinot noir) were trained to a vertical shoot positioning (VSP) system. Surface colour had significant effects on the quantity and quality of reflected radiation into the fruiting zone. The pumice covered soil showed the highest amount of reflected – and the highest ratio of red-to far red light, important in phytochrome mediated enzyme activity in the fruit.
Large thermal effects on soil surface temperature and on berry skin temperature were found. By varying the distance of clusters to the ground, the temperature of berry skins declined rapidly within the first 0.3 m when fruit was exposed to the red, white or natural coloured soil. In contrast, over coarse ground slate the absolute berry surface temperature was higher and remained constant over the same distances. Berry ripening was affected by surface colour and preliminary results indicate that altered vineyard microclimate has effects on berry composition.

DOI:

Publication date: December 8, 2021

Issue: Terroir 2008

Type : Article

Authors

M. STOLL (1), M. STUEBINGER (2), M. LAFONTAINE (1) and H. R. SCHULTZ (1,2)

(1) Fachgebiet Weinbau, Institut für Weinbau und Rebenzüchtung, Forschungsanstalt, D-65366 Geisenheim
(2) Fachhochschule Wiesbaden, Fachbereich Geisenheim, D-65366 Geisenheim

Contact the author

Tags

IVES Conference Series | Terroir 2008

Citation

Related articles…

NEW INSIGHTS INTO THE EFFECT OF TORULASPORA DELBRUECKII/SACCHAROMYCES CEREVISIAE INOCULATION STRATEGY ON MALOLACTIC FERMENTATION PERFORMANCE

Winemaking is influenced by micro-organisms, which are largely responsible for the quality of the product. In this context, Non-Saccharomyces and Saccharomyces species are of great importance not only because it influences the development of alcoholic fermentation (AF) but also on the achievement of malolactic fermentation (MLF). Among these yeasts, Torulaspora delbrueckii allows in sequential inoculation with strains of S. cerevisiae shorter MLF realizations [5] . Little information is available on the temporal effect of the presence of T. delbrueckii on (i) the evolution of AF and (ii) the MLF performance.

Quality of Merlot wines produced from terraced vineyards and vineyards on alluvial plains in Vipava valley, Slovenia (pdo)

AIM: Different factors affect the style and quality of wine and one of the most important are environmental factors of vineyard location.

Studio preliminare sulla microzonazione Bioclimatica condotto in un’area viticola collinare

La caratterizzazione bioclimatica del territorio rappresenta un elemento sempre più impor­tante per il miglioramento dell’ attività agricola. La conoscenza degli andamenti assunti dai parametri meteorologici puà consentire di individuare le peculiarità dei singoli appezzamenti aziendali, ottimizzando le scelte sia in termini tattici (esecuzione dei più opportuni interventi colturali) che strategici (scelta delle specie o varietà più idonee a valorizzare ciascun am­biente).

From protein-centered to gene-centered approaches to investigate DNA-protein interactions in grapevine

DNA-binding proteins play a pivotal role in critical cellular processes such as DNA replication, transcription, recombination, repair, and other essential activities. Consequently, investigating the interactions between DNA and proteins is of paramount importance to gain insights into these fundamental cellular mechanisms. Several methodologies have been devised to uncover DNA-protein interactions, which can be broadly categorized into two approaches. The “protein-centered” approach focuses on identifying the DNA sequences bound by a specific transcription factor or a set of TFs. Techniques falling within this category include chromatin immunoprecipitation, and protein-binding microarrays.

Viticultural zoning in the province of San Juan, Argentina. Preliminary results, year 2000

La région viticole de San Juan (Argentine) est marquée par des températures très élevées et des variations diurnes faibles. La valorisation de la connaissance de cet environnement et de ses interactions avec le fonctionnement de la vigne et le lien au vin passent par l’étude de ses terroirs et de leur caractérisation. Le point de départ de ce travail est l’étude des zones mésoclimatiques aptes à la culture de la vigne de la Province de San Juan et à la caractérisation des sols de cette même région. L’objectif est de définir le potentiel vitivinicole des zones considérées.