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originally posted by VS:
BTW - we're fighting, right now, an outbreak of oidium (bad year for oidium and mildew in our part of the world), and since we're only using the organically acceptable wettable sulfur, the efficiency is possibly not the greatest. (Not that there are many efficient treatments, except very hot dry weather, for oidium once it sets in.) Following ric's line of thought, perhaps with organic treatments we do make more trips to the vineyard and burn more fuel... But then, what's the alternative? Donkeys? Aggressive synthetic treatments?
This is quite a quandary.
Same here, in the outback of tuscany. Cool nights and warm days may enhance aromatic development, but unfortunately are also ideal conditions for oidium development. Being certified organic at this stage of grape development we switch to sulphur in powdered form, which I would guess is accepted in Spain too, or not?
As Eric stated, organic isn't necessary more ecologic or sustainable. One important point is gasoline consumption, but there are other negative externalities e.g. soil compaction among others.
In the not too far future, I'm afraid Clos de la Coule de Serrant will be famous not for its wines, but for its cupper mines....
Still, with regard to making the best possible wine the application of synthetic anti-fungal products seems to be a one way street. But we've lost a lot of grapes the last years for avoiding this one way.