FDAgainst grapevine flavescence dorée
We can only curb FD together.
Legislation is necessary, but on its own it cannot stop grapevine flavescence dorée. Only the whole sector together can curb it – at every level. FD Finder provides the shared knowledge, experience and overview for that.
- Knowledge The FD literature in one place, free of charge.
- Experience 166 measures from Europe: what worked and what did not.
- Overview Monthly: where the fight stands – 21 countries on a map.
- Observation In season, photograph a suspicious vine; the community helps.
We can only work together if we can reach each other. Register, and send this to someone who has vines.
Eight actors, from lawmakers to researchers:
- Lawmaker
- Authority
- Wine community
- Grower
- Plant doctor
- Municipality
- Vine nursery
- Researcher
Everyone has their part. None is enough alone.
Free knowledge base
FD Finder Expert: the FD literature in one place
Scientific papers, legislation, official documents and expert videos on grapevine flavescence dorée, organised. The basic package is free with an account: download it and use it in your own AI subscription. It is currently in Hungarian.
- 12,218unique source documents
- 2,885scientific papers
- 28countries with official FD documents
- 707professional video transcripts
As of 29 October 2026. FD Finder Expert is an AI-supported team member, not a real person, and does not give official positions.
Good practices
What was done elsewhere – and what worked?
Measures against flavescence dorée from across Europe: who applied them first, how well proven they are, and what Hungary would need to adopt them. Based on FD Finder Expert's knowledge base.
- 138 good practices
- 25 approaches that failed
- 3 experimental
Risk indicator
Phytoplasma Risk Index (FKI)
Everything FD Finder does serves one goal: to reduce the risk posed by the phytoplasma that causes grapevine flavescence dorée. This index shows where we stand.
- Spread34%
Like a mask
- Unknown foci73%
Like a PCR test – this is where you help
- Vine loss99%
Like a vaccine – none exists yet
You can do a lot too
Do you know someone with a vineyard? Send this to them.
We can only work together if we can reach each other. One message is enough, and there is one more of us.
“We can only curb FD together. A free knowledge base, good practice from across Europe and community pre-screening against grapevine flavescence dorée.”
fdfinder.org
FDIn season, in the field
Let’s find vines suspected of infection together!
FD Finder is a community app against grapevine flavescence dorée (FD). Finding infected vines early and removing them slows the spread of the disease – in the vineyard and across the whole region.
With one vine, it helps you.With many vines, the whole sector.
Free of charge. On your phone and computer.
Have an account? Sign in
In the field, with the Android app: FD Finder on Google Play
people work in the 223 wine-community inspection groups in 2026.
of Hungary’s vineyard area – that is how much was inspected by early September. We need an order of magnitude more.
cures exist today. An infected vine has to be removed.
season goal: a machine pre-screening prototype.
Source: HNT (National Council of Wine Communities) announcement, 7 September 2026 (223 inspection groups, 1,924 people, 8,526 ha). The ~15% is relative to the 57,700 ha Hungarian vineyard area (2025) reported by KSH (Hungarian Central Statistical Office).
How it works
Three steps. A few minutes in the row.
Photograph a suspicious vine, and the community helps you decide whether it is worth a closer look. The more observations there are, the sooner it becomes apparent where the disease is spreading. Every submission also helps develop the AI that supports recognition.
Record the vine
A few photos from the row. The camera’s guide lines show where the vine and the bunch zone should go.
The community reviews it
Other users review the photos: is the vine worth testing in a lab as well?
The data teaches
Every submission – vines without symptoms too – helps develop the recognition AI.
Pre-screening, not a diagnosis. An infection is always confirmed by a lab test (PCR).
Register nowWhere we are heading
The goal: a camera on the tractor that watches the whole row.
While spraying, the camera marks the risky vines. Experts review them remotely and go out only where it is really needed. For that we need training data now – your photos.
Now · 2026
Collecting data with the community
Recording on phone and web, community review, a risk index.
2027 season
Pre-screening prototype
The first field trial of machine pre-screening trained on the collected photos.
The goal
Row-watching cameras on machines
On a tractor or an autonomous vehicle – an order of magnitude more vines checked with the same number of experts.
With one vine, it helps you. With many vines, the whole sector.
The community assessment is pre-screening, not a diagnosis or an official inspection; a submission is not an official plant-health notification.