top of page

Mildew prevention: now's the time!

Updated: Jun 7, 2023

Dear friends,

Please find below the latest results of our innovative partnership with local start-up BaaS. We're using DNA testing to help control mildew and reduce the use of fungicide in the Château Mamin vineyard.

As you can see, the latest samples taken from the Château Mamin vineyard indicate an increase in mildew sporulation. This marks the end of incubation of the peak on May 9, suggesting asexual propagation (when the fungus produces spores and infects the leaves).

We'll need to anticipate the next propagation cycle by retreating the vineyard if necessary. But we've already sprayed sulfate again to protect the new growth from disease. A few weeks from flowering, it's a critical time for boosting the vines' natural defences!

Early mildew detection in the vineyard

BioEthik Bordeaux - 2023 season

In English:

Number of spores per trap daily (log10 scale)

Risk of infection:

Dry weather / rainy weather

Non-existant / weak

Weak / high

Moderate / very high

High / critical

Why do DNA testing in the vineyard?

Merlot grapes are sensitive to this fungal infection, which dries the fruit and reduces yields. The earlier we can detect risks, the more effectively we can protect the vines using the minimum of anti-fungal product – instead of “spraying and praying.”

How does it work?

  • Every 3 days we collect samples from the sensors placed around the vineyard and give them to BaaS, a local start-up specializing in early pathogen detection.

  • BaaS extracts the DNA and analyses the presence of mildew spores before any damage is visible.

  • When the risks rise, we can spot treat the vines in time to prevent mildew from spreading.


Not signed up? Embark on our innovation adventure with us!

Sign up to our BaaS newsflash:


4 views0 comments


bottom of page