142 SPRAY MACHINERY AND SPRAY MATERIALS 



BORDEAUX MIXTURE. 



Copper sulphate 4 pounds 



Stone lime 4 pounds 



Water 50 gallons 



This mixture is known as the standard Bordeaux. Other 

 strengths are made by using a less amount of the copper 

 sulphate and the stone lime. To make Bordeaux mixture 

 dissolve the copper sulphate in several gallons of water 

 and then add enough water to make 25 gallons. Slake the 

 stone lime in about five gallons of water, and add enough 

 water to it to make the 25 gallons. When these solutions 

 are made pour both of them together into a barrel, and the 

 spray material is finished. 



Bordeaux mixture should not be made in metal vessels 

 because the copper acts upon the metal and soon destroys it. 

 Wooden vessels are best suited for making this material. 

 Bordeaux mixture should always be made fresh and sprayed 

 on the plant as soon as it is made. It loses much of its value 

 as a fungicide if it is allowed to stand very long before it is 

 used. 



Bordeaux mixture is one of the best fungicides we have 

 and its place in horticulture is firmly established. 



SELF-BOILED LIME-SULPHUR MIXTURE. 



Stone lime 10 pounds 



Flowers of sulphur 10 pounds 



Water . . , . . 50 gallons 



Place the lime in a barrel and pour on enough water to 

 start the slaking of the lime. Then add the sulphur after 

 sieving it to remove any lumps and stir the mixture thor- 

 oughly, finally, adding sufficient water to make a paste. 

 Constant stirring is necessary to prevent caking. After the 

 boiling produced by the slaking of the lime is over, the mix- 

 ture should be diluted to the 50 gallons and it is then ready 

 to use. 



This fungicide is very satisfactory for use on the peach, the 

 American and Japanese plums, and upon some varieties of 

 cherries. 



