Grape downy mildew
a lysate, these compounds support plant protection by acting both on the plant surface and by activating the plant’s natural defense mechanisms. This dual [...] e, characteristic ‘oil spots’ on the upper surface of young, actively growing leaves, followed by downy white growth on the underside, are typical early [...] to light-green oil spots on the upper leaf surface, often angular and limited by leaf veins White to greyish downy growth on the underside of leaves under