Grey rot/bunch rot, See above under strawberry. Use a resistant variety. No treatment threshold found. Botrytis Prune the vines so that air and sunlight can cinerea enter the canopy. cyprodinil Removal of basal leaves or basal lateral shoots fenhexamid at or immediately after berry set (on sunrise iprodione side of plant). pyraclostrobin boscalid mancozeb Grape downy mildew, This fungus overwinters on fallen Splashing rain and wind disperse the pathogen. Before an infection period begins: Plasmopara leaves and infects all parts of the Use effective soil drainage and reduction of vitivola vine and leaves, causing yellow sources of overwintering inoculum. mancozeb, lesions delimited by veins. It is If sprinkler irrigation is used, extend the copper hydroxide, dispersed by wind and splashing intervals between sprays. copper sulfate rain. Infected shoot tips, petioles, tendrils, flowers curl and turn Apply as curative: white, then brown and die. Young azoxystrobin berries become covered with a pyraclostrbin gray fungal coating. boscalid kresoxim-methyl mefenoxam trifloxystrobin Oidium/Powdery mildew, This fungus overwinters as fungal Monitor in spring to decide when to treat. No treatment threshold found. (=Uncinula) mycelia inside dormant buds. In Erysiphe necator spring leaves will become sulfur infected, forming infective flag tebuconazole shoots, from where conidia spread azoxystrobin to other shoots and leaves. trifloxystrobin Infected areas turn powdery white. kresoxim-methyl pyraclostrbin boscalid quinoxyfen
Grey rot/bunch rot, Botrytis cinerea See above under strawberry. Use a resistant variety. Prune the vines so that air and sunlight can enter the canopy. Removal of basal leaves or basal lateral shoots at or immediately after berry set (on sunrise side of plant). No treatment threshold found. cyprodinil fenhexamid iprodione pyraclostrobin boscalid mancozeb Grape downy mildew, Plasmopara vitivola This fungus overwinters on fallen leaves and infects all parts of the vine and leaves, causing yellow lesions delimited by veins. It is dispersed by wind and splashing rain. Infected shoot tips, petioles, tendrils, flowers curl and turn white, then brown and die. Young berries become covered with a gray fungal coating. Splashing rain and wind disperse the pathogen. Use effective soil drainage and reduction of sources of overwintering inoculum. If sprinkler irrigation is used, extend the intervals between sprays. Before an infection period begins: mancozeb, copper hydroxide, copper sulfate Apply as curative: azoxystrobin pyraclostrbin boscalid kresoxim-methyl mefenoxam trifloxystrobin Oidium/Powdery mildew, Erysiphe (=Uncinula) necator This fungus overwinters as fungal mycelia inside dormant buds. In spring leaves will become infected, forming infective flag shoots, from where conidia spread to other shoots and leaves. Infected areas turn powdery white. Monitor in spring to decide when to treat. No treatment threshold found. sulfur tebuconazole azoxystrobin trifloxystrobin kresoxim-methyl pyraclostrbin boscalid quinoxyfen