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Diachronic study of the effect of growing trees on grapevine yield: 24 years of experience in the South of France

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HAL Id: hal-02736832

https://hal.inrae.fr/hal-02736832

Submitted on 2 Jun 2020

HAL is a multi-disciplinary open access archive for the deposit and dissemination of sci-entific research documents, whether they are pub-lished or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers.

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Diachronic study of the effect of growing trees on

grapevine yield: 24 years of experience in the South of

France

Marie Gosme, Juliette Grimaldi, William Trambouze

To cite this version:

Marie Gosme, Juliette Grimaldi, William Trambouze. Diachronic study of the effect of growing trees on grapevine yield: 24 years of experience in the South of France. 4. World Congress on Agroforestry, May 2019, Montpellier, France. 933 p. �hal-02736832�

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58

Agroforestry 2019- Regular Talk L2.1 Adaptation to CC

4th World Congress on Agroforestry

Strengthening links between science, society and policy 20-22 May 2019Le Corum, Montpellier, France Book of Abstracts L02.1_O.03

Diachronic study of the effect of growing trees on grapevine yield: 24 years of experience in the South of France

Gosme M.1 (marie.gosme@supagro.inra.fr), Grimaldi J.2, Trambouze W.3

1 UMR SYSTEM, INRA, Montpellier, France; 2 CESBIO, Toulouse, France; 3 Chambre d’agriculture de l’Hérault, Montblanc, France

Grapevine growers are fearful of the potential effects of climate change on yield and wine quality: the continuing trend for earlier harvest date leads to a decrease in wine organoleptic quality, and increased temperatures lead to heat stress and reduced yield. Thanks to its mi-croclimatic effect, agroforestry could mitigate these risks. In 1995, trees (mainly Pinus pinea and Sorbus domestica) were planted with 4 or 5 rows of grapevine between each row of trees, on the Restinclières Agroforestry Platform, in the South of France. Twenty-four years later, the accumulated experience allows us to draw conclusions on the beneficial effects of the agroforestry microclimate, with up to 6 degrees lower in agroforestry compared to the pure grapevine control in the hottest summer days, but also on the negative effects of agroforestry, such as nitrogen competition between the trees and the vine, which is significant only on the grapevine row nearest to the tree line.

Grapevine associated with Sorbus domestica and Pinus pinea

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