Burgundy mixture

This mixture, which can have an overall copper concentration within the range of 1% through 20%,[2] is used as a fungicidal spray for trees and small fruits.

[1] This helps to prevent the accumulation of high levels of copper in sediments surrounding the plants.

Sodium carbonate is generally added in higher quantities and at a dissolved ratio of 1:1.5.

[5] Burgundy mixture is used as a preemptive fungicide prevention for trees and small fruits.

[6] Unfortunately, the mechanism for copper antifungal properties is not well understood,[1] though it is thought that interactions between the copper and negatively charged portions of the cellular membranes of the fungi promote an altered shape and increased membrane permeability,[1] which alters the homeostasis of the cell and can lead to insufficient uptake and storage of essential nutrients and ions.