You can't generalise from one wineyard in one country, but you know that. And France is hardly an organic wine leader.
Copper sulphate is a fungicide used for centuries and is pretty safe (so safe that my chemical engineer father was willing to use it in his otherwise completely sans-chemicals garden). Organic wine not only does not use (other) fungicides and herbicides; it also does not use other chemicals and processes in later stages of winemaking.
Copper sulphate is a fungicide used for centuries and is pretty safe (so safe that my chemical engineer father was willing to use it in his otherwise completely sans-chemicals garden). Organic wine not only does not use (other) fungicides and herbicides; it also does not use other chemicals and processes in later stages of winemaking.