Similarly, cucurbit downy mildew (caused by Pseudoperonospora cubensis) is specific to cucurbits (e.g., cantaloupe (Cucumis melo), cucumber (Cucumis sativus), pumpkin, squash, watermelon (Citrullus lanatus) and other members of the Cucurbitaceae/gourd family).
In the 1880s, the trials which led to the development of the Bordeaux mixture to combat downy mildew mostly took place in the vineyards of Château Dauzac.
By the 1880s it had become one of the major Piedmontese grapes, and in that period its cultivation was stimulated by the vine’s resistance to the downy mildew caused by the Plasmopara viticola fungus.
He was also responsible for protecting grape vineyards from downy mildew fungus (Plasmopara viticola).
Pseudoperonospora cubensis is a species of water mould known for causing downy mildew on cucurbits such as cantaloupe, cucumber, pumpkin, squash and watermelon.
It has been considered for a long time to cause downy mildew of a variety of species within the Brassicaceae family such as oilseed rape and cauliflower, on which the disease can cause economically important damage by killing seedlings or affecting the quality of produce intended for freezing.