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About the AT Internet audience measurement tool :

AT Internet's audience measurement tool Analytics is deployed on this site in order to obtain information on visitors' navigation and to improve its use.

The French data protection authority (CNIL) has granted an exemption to AT Internet's Web Analytics cookie. This tool is thus exempt from the collection of the Internet user's consent with regard to the deposit of analytics cookies. However, you can refuse the deposit of these cookies via the cookie management panel.

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When you start browsing an eZpublish site, the appearance of the "cookies" banner allows you to accept or refuse all the cookies we use. This banner will be displayed as long as you have not made a choice, even if you are browsing on another page of the site.

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For more information about the cookies we use, you can contact INRAE's Data Protection Officer by email at cil-dpo@inrae.fr or by post at :

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Last update: May 2021

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Site web of unit USRAVE - Unit Services Research Analyses Plant Environnemental

Zone de texte éditable et éditée et rééditée

Vines

Protocol of taking of vine leaves

Quand prélever :

Stades "fin de floraison" et "début véraison".
En cas de prélèvement unique, choisir le stade "début véraison" ou prélever 20 jours après la fin de la floraison (équivalent à la moyenne des deux stades précités).

Où :

Zone de vignoble homogène (même porte-greffe, cépage, sol). Prélever sur 16 rangs (ou sous parcelles ) à raison de 3 souches au minimum par rang ou sous parcelle. Repérer les souches pour assurer la continuité et la représentativité des prélèvements annuels successifs.

Comment :

Prélever la feuille entière opposée à la première grappe, repérée à partir de la base du sarment, ou la feuille immédiate située au-dessus de la grappe.

Quantité :

1 feuille par souche saine et en bon état (soit 48 feuilles par parcelle).

Conditionnement :

Le lot de feuilles est placé dans une poche en plastique solide et propre.
Etiqueter chaque lot en inscrivant lisiblement : Nom, adresse, variété, porte greffe, date de prélèvement et référence parcelle.

Précaution :

Envoyer au laboratoire dans les plus brefs delais en ayant soin de ne pas laisser l'échantillon exposé au soleil.