Influence of vine water status (Terroir 2006)

IVES 9 IVES Conference Series 9 International Terroir Conferences 9 Terroir 2006 9 Category: Influence of vine water status (Terroir 2006)
Influence of vine water status (Terroir 2006)IVES Conference SeriesTerroir 2006

Terroir and vine water relation effects on grape ripening and wine quality of Syrah/R99

A Syrah/R99 vineyard in the Stellenbosch area was used. The vineyard is vertically trained and spaced 2.75 x 1.5 m in north-south orientated rows on terroir with Glenrosa soil and west-facing slope. Irrigation (to 100% field water capacity) treatments were applied at different development stages [all stages (including berry set stage); pea size; véraison; post-véraison]. Combined effects of water status and ripeness level were investigated. Preliminary results are presented.

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Influence of vine water status (Terroir 2006)IVES Conference SeriesTerroir 2006

The use of viticultural and oenological performance of grapevines to identify terroirs: the example of Sauvignon blanc in Stellenbosch

Identification and characterisation of terroirs depends on knowledge of environmental parameters, functioning of the grapevine and characteristics of the final product. A network of plots of Sauvignon blanc was delimited in commercial vineyards in proximity to weather stations at 20 localities and their viticultural and oenological response was monitored for a period of seven years. These experimental plots were further characterised with respect to climate, soil and topography.

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Influence of vine water status (Terroir 2006)IVES Conference SeriesTerroir 2006

Water relations of woody perennial plant species

Field irrigation experiments were performed on young « Nonpareil » almond trees, mature « Bartlett » pear trees and mature « Pinot Noir » grapevines, to determine the relation of a number of alternative measures of plant water status (predawn and midday stem and leaf water potential), to a number of indices of plant physiological activity (leaf conductance, vegetative growth and fruit growth and composition).

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