Grape downy mildew
primarily as oospores in fallen leaf litter, though in milder climates it can also persist as mycelium within infected buds and canes. In spring, oospore g [...] germination is triggered when temperatures reach 10°C in the presence of soil moisture, leading to the formation of macrosporangia that release motile zoospores [...] mildew, caused by Plasmopara viticola , is one of the most important diseases in wine and table grape production worldwide. The disease spreads rapidly under