Impact of grafting type on Esca foliar symptoms
Language
en
Article de revue
This item was published in
OENO One. 2017, vol. 51, n° 2-3, p. 221-230
International Viticulture and Enology Society (IVES)
Date
2017English Abstract
Aim: The aim of the survey was to investigate if the grafting type influences the foliar expression of Esca during summer. [br/] Methods and Results: Observations were conducted on plots distributed in two French winegrowing ...Read more >
Aim: The aim of the survey was to investigate if the grafting type influences the foliar expression of Esca during summer. [br/] Methods and Results: Observations were conducted on plots distributed in two French winegrowing regions (two different climatic regions) with two varieties (Cabernet-Sauvignon in the Bordeaux region and Mourvedre in Provence). Three grafting types were compared: Omega graft, Whip and Tongue graft, and full cleft graft. For both varieties, we found a significant effect of the type of grafting on the foliar development of Esca symptoms. Full cleft grafted plots showed a significantly lower percentage of Esca foliar symptoms than the other two modalities, which were not significantly different from one another. Concerning Omega grafted plots, a significant difference in the rate of Esca foliar symptoms was highlighted compared to full cleft grafted plots, with a higher rate on Omega grafted plots, but these plots were also younger. [br/] Conclusions: The study established, for the first time, the difference between full cleft field grafted plots and Omega and Whip and Tongue grafted plots, revealing a higher incidence of Esca on the latter types of grafting. [br/] Significance and impact of the study: The spread of mechanical graft could be one of the factors explaining the increasing incidence of Esca in vineyard.Read less <
Keywords
Esca de la vigne
Comportement de porte greffe
Surface foliaire
Provence
Bordelais
English Keywords
Esca
Foliar Symptoms
Graft Type
Nurseries
Quality Of Planting Material
Origin
Hal imported