Definition of Bordeaux mixture in English:
A fungicide for vines, fruit trees, and other plants, composed of equal quantities of copper sulphate and calcium oxide in water.
- Some prominent inorganic pesticides include Bordeaux mixture, a complex fungicide with several copper-based active ingredients, used for fruit and vegetable crops.
- The soil acidity of the Médoc in Bordeaux, for example, also promotes copper toxicity where there has been a buildup of copper in the topsoil from spraying vines with Bordeaux mixture.
- Copper based fungicides such as Bordeaux mixture can be used as a treatment for these, although the symptoms disappear when environmental conditions change.
Late 19th century: first used in the vineyards of the Bordeaux region.
Definition of Bordeaux mixture in:
- US English dictionary
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