« The follow-ups carried out in 2025, within the framework of the Oscar observatory, confirm the strong potential of resistant varieties for reducing the use of plant protection products. This decrease in the IFT was accompanied by good control of powdery mildew and downy mildew on all the plots followed in the observation network. Under the climatic conditions of the year and with the protection strategies implemented, no significant crop loss was observed ». This is the general conclusion of the National Observatory for the Deployment of Resistant Grape Varieties (Oscar) for the year 2025. Also to be seen For a reminder, this network, set up and managed by the IFV and INRAE with the support of the Chambers of Agriculture, the wine trade organizations, and the Viticulture Nursery, since the planting of the first resistant grape varieties in 2018, aims to monitor the behavior of varieties resistant to downy mildew and powdery mildew and to establish recommendations to preserve ...