SPRAYING MIXTURES. 203 



SPRAYING MIXTURES. 



The spraying of trees and bushes is done mainly for three purposes : 

 I, to pievent and destroy the leaf-eating insects ; 2, to prevent and 

 destroy sucking insects ; 3, to prevent and destroy the germs of plant 

 diseases. Poisons such as Paris Green (which is a compound of arsenic) 

 are used for the first, kerosene (coal oil) emulsion for the second, and 

 copper sulphate for the third. As a rule the first and third are combined. 



BORDEAUX MIXTURE. 



Copper sulphate (or bluestone) 4 pounds. 



Lime (fresh) 4 ' 



Water 40 gallons. 



Place the copper sulphate in a coarse hag and hang it in 5 gallons o' 

 water. Slake the !-me in 5 gallons of wa'er. Then mix the two and add 

 the other 30 gallons of water. Use only wooHen vessels. Pans Green 

 solution is made byotirring up I pound of Paris Green in 200 to 300 gallons 

 of water (200 for apple trees, 250 for plums, and 300 lor peacnes), adJ 

 about 4 gallons of milk of lime. 



When the Paris Green and Bordeaux mixture are to be used together to 

 check the insects and disease at the same time, make the Bordeaux 

 mixture as above stated and add 4 oz. of Paris Green to ihe 40 gallons of 

 Bordeaux mixture. 



KEROSENE EMULSION. 



Hard soap }4 pound, or soft soap, I quart. 



Boiling water (soft) . j gallon. 



Coal oil 2 gallons. 



After dissolving the soap in the water, add the coal oil and stir well for 

 5 to 10 minutes. When properly mixed, it will adhere to glass without 

 oiliness. A syringe or pump will aid much in this % voik. In using, dilute 

 with from 9 to 15 parts of water. Kerosene emulsion miy be prepared 

 with sour milk (i gillon) and coal oil (2 gallons), no soap being required. 

 This latter will not keep long. 



