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Budburst occurs during pruning in Bordeaux and Burgundy

Par Vitisphere Le 30 novembre 2020
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Budburst occurs during pruning in Bordeaux and Burgundy
When in doubt and to avoid a drop in productivity, Professor Alain Deloire recommends winegrowers wait until the cold weather sets in before pruning short.
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A second harvest is looming in the vineyards of Chablis”, claimed Frédéric Percheron in a Facebook post in the ‘Equipment and Viticulture’ group on 12 November. Like him, several winegrowers have published photos of vines developing new leaves. “I pre-pruned 2 hectares of Sauvignon and saw leaves across the entire vineyard. There were fewer leaves on the Merlot. This has become a recurring issue over the past few years. Let's hope that the cold weather sets in so that the sap really drops and the vines can rest”, commented Bertrand Aniel, a winegrower in Gignac, southern France.

Patrick Crozat, the winegrower at Domaine Rodhes Hautes in Lot-et-Garonne, and Aurore Peyre in Entre-Deux-Mers have noticed the same thing. In Burgundy’s Côte de Nuits, wine consultant Pierre Petitot also came across a cane with renewed growth on an estate where he was carrying out a soil analysis. “It's surprising. Early leaf drop caused by drought may have sent a signal to the vines to get back into growth mode”. Pierre Petitot is unable to precisely gauge the extent of the phenomenon. “Due to lockdown, we are not out on the ground as much, but I think it is still occurring in isolated plots, otherwise we would have received photos from our various Whatsapp groups”.

According to Professor Alain Deloire of the Agro Institute in Montpellier, sometimes the canopy does start to grow again with the laterals. This is not an issue for pruning, irrespective of whether the vines are cordon or guyot trained. “Real latent bud growth at the end of the canes would be more unexpected because endodormancy only ends after eight days at under 8°C”, he points out.

 

When in doubt and to avoid a drop in productivity, Professor Alain Deloire recommends winegrowers wait until the cold weather sets in before pruning short.

 

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