THE GARDEN PRIMER 



Fungicides 



7. Bordeaux Mixture 



This is made by combining a solution of 

 Copper Sulphate V\^ith Milk of Lime and 

 reducing the mixture with the proper 

 amount of water. 



Copper Sulphate Stock: dissolve copper 

 sulphate (blue vitriol) in hot water, using i 

 pound of the bluestone to i gallon of water. 



Milk of Lime : Slake the lime slowly and 

 add water enough to make a thick paste. 

 Use wooden or porcelain vessels for both 

 of these stock preparations and keep both 

 covered to exclude the air. They may be 

 kept any length of time. 



(a) For dormant vegetation compound the 



mixture in this proportion: 



I pound copper sulphate (i gallon of 

 stock). 



I pound lime (dry weight before 



slaking). 

 9 gallons of water. 



(b) For plants in leaf compound as follows: 



I pound copper sulphate (i gallon of 

 stock). 



I J pounds of lime (dry weight before 



slaking). 

 13 gallons of water. 



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