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New grapes in Bordeaux
- Thread starter Jeff Grossman
- Start date
Jonathan Loesberg
Jonathan Loesberg
CdP, or parts of it, was devastated by powdery mildew in 2018. And copper sulfate didn't help much. I don't know if anything like that has happened elsewhere recently.
Jeff Grossman
Jeff Grossman
Not with the phenolic overripeness that they desire, no.
Jeff Grossman
Jeff Grossman
Are you suggesting that monoculture has drawbacks?originally posted by MLipton:
It seems that a lot of the motivation for this change has to do with concerns about fungal diseases. Have there been problems with rot in recent years?
originally posted by Jeff Grossman:
Are you suggesting that monoculture has drawbacks?originally posted by MLipton:
It seems that a lot of the motivation for this change has to do with concerns about fungal diseases. Have there been problems with rot in recent years?
Of course not, Jeff. Just ask any resident of 19th C Ireland.
Mark Lipton
originally posted by Jonathan Loesberg:
CdP, or parts of it, was devastated by powdery mildew in 2018. And copper sulfate didn't help much. I don't know if anything like that has happened elsewhere recently.
Copper sulfate is used to treat downy mildew, not powdery mildew; that is generally treated with elemental sulfur. But the article referred to crosses that had better resistance to grey rot (Botrytis cinerea) as well.
Jonathan Loesberg
Jonathan Loesberg
originally posted by mark e:
originally posted by Jonathan Loesberg:
CdP, or parts of it, was devastated by powdery mildew in 2018. And copper sulfate didn't help much. I don't know if anything like that has happened elsewhere recently.
Copper sulfate is used to treat downy mildew, not powdery mildew; that is generally treated with elemental sulfur. But the article referred to crosses that had better resistance to grey rot (Botrytis cinerea) as well.
I am reporting what more than one vigneron told me. I do know that copper sulfate is routinely sprayed in vineyards prior to predicted rain storms, so I don't know that they distinguish that carefully.
Jeff Grossman
Jeff Grossman
originally posted by MLipton:
originally posted by Jeff Grossman:
Are you suggesting that monoculture has drawbacks?originally posted by MLipton:
It seems that a lot of the motivation for this change has to do with concerns about fungal diseases. Have there been problems with rot in recent years?
Of course not, Jeff. Just ask any resident of 19th C Ireland.
You know, they still put potatoes on the grave of Frederick the Great.