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Burgundy mixture : ウィキペディア英語版 | Burgundy mixture
Burgundy mixture, named after the French district where it was first used to treat grapes and vines, is a mixture of copper sulfate and sodium carbonate. This mixture, which can have an overall copper concentration within the range of 1% through 20%, is used as a fungicidal spray for trees and small fruits.〔Roberts, J. W.; Botanical Review. 1936, 2, 586.〕 ==History== Similar to the Bordeaux Mixture, one of the earliest fungicides in use, Burgundy Mixture, also known as “Sal soda Bordeaux,” is used as a fungus preventative applicant on plants before fungi have appeared. Bordeaux Mixture contains Copper Sulphate, CuSO4, and hydrated lime, Ca(OH)2, while Burgundy Mixture contains Copper Sulphate, CuSO4, and Sodium Carbonate, Na2CO3.〔 First used around 1885,〔 Burgundy Mixture has since been replaced by synthetic organic compounds, or by compounds that contain Copper in a non-reactive, chelated form.〔 This helps to prevent the accumulation of high levels of Copper in sediments surrounding the plants.
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