| 1. | (Hort.) A fungicidal mixture composed of blue vitriol, lime, and water. The formula in common use is: blue vitriol, 6 lbs.; lime, 4 lbs.; water, 35 - 50 gallons. |
| Noun | 1. | Bordeaux mixture - antifungal agent consisting of a solution of copper sulphate and quicklime |
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