GUÉRIN-DUBRANA, Lucia; LABENNE, Amaury; LABROUSSE, Jean-Christophe; BASTIEN, Sylvie; REY, Patrice; GÉGOUT-PETIT, Anne

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GUÉRIN-DUBRANA, Lucia
Santé et agroécologie du vignoble [UMR SAVE]
Université Sciences et Technologies - Bordeaux 1 [UB]

LABENNE, Amaury
Santé et agroécologie du vignoble [UMR SAVE]
Université Sciences et Technologies - Bordeaux 1 [UB]

LABROUSSE, Jean-Christophe
Santé et agroécologie du vignoble [UMR SAVE]
Université Sciences et Technologies - Bordeaux 1 [UB]

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Article de revue

Ce document a été publié dans

Phytopathologia Mediterranea. 2013, vol. 52, n° 2, p. 276 - 288

Firenze University Press

Résumé en anglais

Esca and Eutypa dieback are two major wood diseases of grapevine in France. Their widespread distribution in vineyards leads to vine decline and to a loss in productivity. However, little is known either about the temporal dynamics of these diseases at plant level, and equally, the relationships between foliar expression of the diseases and vine death is relatively unknown too. To investigate this last question, the vines of six vineyards cv. Cabernet Sauvignon in the Bordeaux region were surveyed, by recording foliar symptoms, dead arms and dead plants from 2004 to 2010. In 2008, 2009 and 2010, approximately five percent of the asymptomatic vines died but the percentage of dead vines which had previously expressed esca foliar symptoms was higher, and varied between vineyards. A logistic regression model was used to determine the previous years of symptomatic expression associated with vine mortality. The mortality of esca is always associated with the foliar symptom expression of the year preceding vine death. One or two other earlier years of expression frequently represented additional risk factors. The Eutypa dieback symptom was also a risk factor of death, superior or equal to that of esca. The study of the internal necroses of vines expressing esca or Eutypa dieback is discussed in the light of these statistical results.< Réduire

Mots clés

epidemiology

logistic regression

Mots clés en anglais

grapevine

trunk diseases

Origine

Importé de hal

Unités de recherche

Institut de Mathématiques de Bordeaux (IMB) - UMR 5251