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[Water nutrition of grapevine as a factor of "terroir" (environment) expression] | Alimentation hydrique de la vigne: un facteur de l'expression du terroir
2000
Bessis, R. (Universite de Bourgogne, Dijon (France). Institut Universitaire de la Vigne et du Vin) | Adrian, M.
Comme toutes les plantes, la vigne a besoin d'eau, mais ses besoins sont specifiques et ils constituent l'un des caracteres du terroir. On presente une evaluation globale des besoins de la vigne, puis comment la vigne absorbe l'eau et ou elle la trouve et enfin comment elle se comporte vis a vis de l'eau dans differentes situations et au cours de son cycle vegetatif. Cet expose ne se propose pas d'etre exhaustif, mais oriente vers l'obtention et la comprehension de la qualite des produits
Mostrar más [+] Menos [-]Water supply and behaviour of Pinot noir vines in the vineyard of Chamoso (VS) | Alimentation en eau et comportement du Pinot noir: bilan d'un essai dans le vignoble de Chamoson (VS)
2010
Spring, J.-L. | Zufferey, V. | Verdenal, Th. | Viret, O., Station de recherche Agroscope Changins-Waedenswil ACW, Pully (Switzerland)
Four plots have been planted with homogeneous material of Pinot noir cultivar on typical soils of Chamoson area (Valais, Switzerland). Conducted from 1997 to 2000, this research allowed pointing out the influence of water nutrition on agronomical and oenological potential of Pinot noir. In a situation without water restriction, vigour was clearly higher and budburst was delayed. In the must, soluble solids content was lower in absence of water constraint, while malic acid and nitrogen contents were higher. Meanwhile, pH remained relatively constant due to higher potassium content. In fact, any situation inducing regular and moderate water restriction during ripening did led to wines with more polyphenols and more qualitative tannins, which were preferred by the panel of tasters.
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