Terroir 2016 banner
IVES 9 IVES Conference Series 9 Electromagnetic conductivity mapping and harvest zoning: deciphering relationships between soil and wine quality

Electromagnetic conductivity mapping and harvest zoning: deciphering relationships between soil and wine quality

Abstract

Using electromagnetic conductivity mapping and GIS technology, we identified two unique soil zones within a 0.8-hectare Cabernet Franc block in central Virginia, USA. For three vintages we implemented a differential harvest and experimental winemaking based on soil zoning and noted that each zone produces unique wines despite the fact that both consist of the same rootstock, clone, row orientation, trellis system, vine age and undergo the same farming practices.

Significant differences observed between the two lots, particularly potassium (K+) levels and pH of the fruit and wine, have been consistent from vintage to vintage. Our findings suggest a relationship between soil physical characteristics, site hydrology, soil chemistry, nutrient levels in the vine and fruit, and wine chemistry (specifically K+ and pH).

DOI:

Publication date: June 23, 2020

Issue: Terroir 2016

Type: Article

Authors

Ernest BEASLEY IV, MS, CPG (1), Benoit PINEAU (2), Lucie MORTON (3)

(1) HydroGeo Environmental, LLC, 418 East Main Street, Charlottesville, Virginia 22902
(2) Pollak Vineyards, 330 Newtown Road, Greenwood, Virginia 22943
(3) Vitipiont International Research Centre, PO Box 5607, Charlottesville, Virginia 22905

Contact the author

Keywords

geophysics, viticulture, terroir, soil, management zoning, potassium, wine, precision viticulture

Tags

IVES Conference Series | Terroir 2016

Citation

Related articles…

A new winemaking technology: fermentation, aging and bottling without added additives and preservatives

Auric infinity Technology introduces three new patented products designated for fermentation, aging and bottling without added additives and preservatives that have never been used in the winemaking industry.

Evaluation of intrinsic grape berry and cluster traits for postharvest withering kinetics prediction

To make some particular wine styles (e.g., Amarone), grapes are harvested and stored in dehydrating rooms before vinification, in a process called withering

Isohydric and anisohydric behavior of 18 wine grape varieties grown in an arid climate

The interest in understanding the water balance of terrestrial plants under drought has led to the creation of the isohydric/anisohydric terminology. The classification was related to an implication-driven framework, where isohydric plants maintain a constant and high leaf water potential through an early and intense closure of their stomata, hence risking carbon starvation. In contrast, anisohydric plants drop their leaf water potential to low values as soil drought is establishing due to insensitive stomata and thus risk mortality through hydraulic failure, albeit maximizing carbon intake. When applied to grapevines, this framework has been elusive, yielding discrepancies in the classification of different wine grape varieties around the world.

El medio natural de Chile como factor de adaptación de la vid

Chile, junto con Australia, EE.UU., Sudáfrica, Argentina y Nueva Zelanda constituye el grupo de países del nuevo mundo vitivinícola. Todos ellos en conjunto han experimentado en la última década

A general phenological model for characterising grape vine flowering and véraison

The timing of phenology is critical if grape quality potential is to be optimized. Phenological process based models are used to predict phenology. In this study, three different models