OPSeed75, a new solution against downy mildew to reduce copper use
Press release
06.05.2026
Groupe Berkem launches OPSeed75, a grape seed–based solution designed to reduce copper use in the fight against downy mildew, now available for farmers and winegrowers across Europe.
This launch comes in a European context of reducing copper inputs and evolving crop‑protection practices.
An innovation backed by 50 years of plant‑based expertise
OPSeed75, a concentrated extract containing 75% OPC (oligo‑proanthocyanidins), is produced through a standardized industrial process.
It is a basic substance approved at the European level (Implementing Regulation (EU) 2025/96) for its fungicidal effect, demonstrated during trials conducted in France on organic vineyards.
Its high OPC concentration ensures regular and reliable performance in the field.
A French, traceable and controlled solution
Manufactured in France, at Groupe Berkem’s plant in Dordogne.
Raw materials sourced from French grape seeds, selected according to strict specifications ensuring quality and traceability.
Objective: maintaining crop protection while reducing copper doses
According to Olivier Fahy, Chairman and CEO of Groupe Berkem:
“Faced with the reduction of plant protection products and restrictions on copper use, we have developed OPSeed75. This solution, compatible with copper, helps maintain crop protection while reducing applied doses. It is now directly available to farmers across Europe,”
Grape seed: a natural ally for crop protection
Technical and regulatory advantages
100% natural origin
Food‑grade, suitable for organic farming (Regulation (EU) 1165/2021) and compliant with the Demeter standard
Demonstrated fungicidal effect against vine downy mildew (Plasmopara viticola) and apple scab (Venturia inaequalis)
Compatibility and uses
Can be used alone or in combination with other plant‑protection products.
Compatible and miscible with copper‑based products.
