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Bordeaux mixture (also called Bordo Mix) is a mixture of copper(II) sulphate (CuSO 4) and quicklime (Ca O) used as a fungicide. It is used in vineyards, fruit-farms, vegetable-farms and gardens to prevent infestations of downy mildew, powdery mildew and other fungi. It is sprayed on plants as a preventive treatment; its mode of action is ...
Downy mildew refers to any of several types of oomycete microbes that are obligate parasites of plants. Downy mildews exclusively belong to the Peronosporaceae family. In commercial agriculture , they are a particular problem for growers of crucifers , grapes and vegetables that grow on vines.
Because of numbers and results like these, downy mildew has been considered the most devastating disease of a filamentous pathogen to affect European vineyards. [ 3 ] [ 2 ] [ 7 ] When comparing three grape producers in Europe, including some fields that were treated with fungicides or other management strategies, the economic losses ranged from ...
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He was also responsible for protecting grape vineyards from downy mildew fungus (Plasmopara viticola). He accomplished this feat by implementing a fungicide consisting of hydrated lime, copper sulfate and water, a mixture that was to become known as the "Bordeaux mixture". It was the first fungicide to be used worldwide and is still used today.
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Downy mildew is an extremely common disease of the lettuce plant. This is largely due to the disease's quick germination period—three hours—and the lettuce plant being susceptible at all growth stages. One study estimated that in untreated Florida fields 75% of lettuce was infected with downy mildew and considered unsalable. [113]
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