520 



STATE BOARD OF AGRICULTtlRti> 



A iiood ([iiick way to (•oml)ine tUo8e llu-eo subslaiice.s is as follows: 

 Put the amount of the "slock «ulutiou" of copper sulphate required in 

 a barrel, and add enough water to make 25 gallons, or one-half barrel. 

 J*ut about 7 pounds of the lime paste in a barrel and add 25 gallons of 

 water, making a thin whitewash. Pour, or let these two run together 

 into a third barrel, or directly into the spray barrel or tank, being sure 

 to strain. When partly run in, test Avith ferro-cyanide of potashf to 



make sure enough lime has been used. If Paris green, arsenate of lead, 

 or any other poison is to be used, make it into a thin paste with a little 

 water and add it to the Bordeaux mixture, which is now ready to be 

 used. 



COPPER SULPHATE SOLUTION. 



Is copper sulphate dissolved in water. It is used by some growers 

 to spray peach trees to prevent the leaf curl where a spraying for scale 

 insects is not required. Two pounds of copper sulphate to 50 gallons of 

 water is strong enough for this purpose. 



t This chemical can be secured of any druggist. Ten cents worth dissolved in a pint of 

 water will be enough for a season. Drop a very little in the Bordeaux, if a reddish brown 

 color appears more lime must be added. If there is no discoloration, there is enough 

 lime. Ferro-cyanide of potash is extremely poisonous, so observe great care in its use. 



