Original research articles

Number of berries per m2 for Pinot noir and Chardonnay in Alsace, Bourgogne and Champagne

Abstract

Yield components leading to the number of berries per m2 were measured for two varieties in Alsace, Burgundy and Champagne, three vineyards in northern France. The number of shoots per m2, the number of inflorescences, the number of flowers and the number of berries per shoot were recorded on the same plots of Pinot noir and Chardonnay between 1995 and 1999. The data showed a great variability of the number of flowers per shoot between years, whereas the number of inflorescences and the number of berries per shoot were more stable. All the yield components, especially the number of flowers per shoot, were lower in Burgundy when compared to Alsace or Champagne. Differences between Pinot noir and Chardonnay are discussed. Fruit set ratio, always above 40 p. cent, are more linked to the number of flowers per shoot than to the number of berries per shoot. A new method for characterising fruit set is proposed.

Authors


Eric Duchêne

Affiliation : UMR 1131 Santé de la Vigne et Qualité du Vin, INRA, Université de Strasbourg, F-68000 Colmar, France

duchene@colmar.inra.fr

Dominique Meluc

Affiliation : Bureau Interprofessionnel des Vins de Bourgogne, 16, rue du 16e chasseurs, B.P. 150, 21204 Beaune, France


Laurent Panigai

Affiliation : Comité Interprofessionnel du Vin de Champagne, 5 rue Henri-Martin, BP 135, 51204 Epernay Cedex, France


François Langellier

Affiliation : Comité Interprofessionnel du Vin de Champagne, 5 rue Henri-Martin, B.P. 135, 51204 Épernay cedex, France


Christine Monamy

Affiliation : Bureau Interprofessionnel des Vins de Bourgogne, 16, rue du 16e chasseurs, B.P. 150, 21204 Beaune, France


Christophe Schneider

Affiliation : Institut National de la Recherche Agronomique, Unité Mixte de Recherche Vigne et Vins d'Alsace, 28, rue de Herrlisheim, B.P. 507, 68021 Colmar (France)

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