![Vines attacked by mildiou (downy mildew) that makes the berries shrivel](https://www.bkwine.com/wp-content/uploads/2023/09/20230915_102747-300x169.jpg)
Fungal disease attacks fungus-resistant grapes, a setback for environmentally friendly grapes?
Observations made in the departments of Gard and Vaucluse in southern France show a high level of symptoms of downy mildew, a severe fungal disease, on several supposedly fungus-resistant grape varieties, sometimes called piwi grapes.