Grape seed extract solution

A reddish-brown to dark brown solution that leaves no residue after shaking. Use on the same day. Results are not guaranteed: they depend on the preparation, the time of use, and local conditions.

Application

When to use: Routinely

Opportunist: Downy mildew (Fungus) Scab (Fungus)

⚠ Warning: the associations between recipes and opportunists come from other references (traditional practices, publications, user feedback). They are neither a recommendation nor a claim of effectiveness. There is no certainty regarding the preparation, application and use of these bio-preparations. See the regulations

Application description: Use approved by Implementing Regulation (EU) 2025/96 and its review report PLAN/2024/800 rev. 3: 1) grapevine, against downy mildew (Plasmopara viticola), BBCH 13–57 and then 71–79, do not apply during flowering; 2) apple, against scab (Venturia inaequalis), BBCH 11–59; 3) potato, against late blight (Phytophthora infestans), BBCH 31–59 and then 70–90; 4) lettuce, grown outdoors and in greenhouses, against downy mildew (Bremia lactucae, Peronospora sp.), BBCH 19–50.

Dose: Always 98 g/hL. Grapes and potatoes: 300 L/ha, or 294 g/ha; 6 applications spaced 5 to 7 days apart. Apple trees: 500 L/ha, or 490 g/ha; 6 applications spaced 5 to 7 days apart. Lettuce: 500 L/ha, or 490 g/ha; 3 applications spaced 5 to 7 days apart. No pre-harvest interval specified.