262 



ARID AGRICULTURE. 



injurious to plants or dangerous to use, and other 

 methods must be found. 



KEROSENE 

 EMULSION 

 FOB BUGS 



Kerosene Emulsion is made as follows: Dis- 

 solve one-half pound of hard soap in one gallon 

 of soft boiling water. While the water is hot, 

 mix with it two gallons of kerosene. Put in the 

 kerosene and thoroughly churn the oil and soap 

 together, until the substance is so mixed it is like 

 soft cream. When ready to use mix one gallon 

 of this emulsion with twenty-seven gallons of 

 water, and spray it over the bugs with a spray 

 pump or sprinkle it on them with a brush or 

 broom. It should be used fresh and care should 

 be taken not to spray the oil on plants after it 

 has separated. This is used to kill many small 

 insects, especially small sucking bugs, like plant 

 lice. 



WHALE OIL 

 SOAP FOB 



PLANT LICE 



A solution of one pound of whale oil soap 

 in six or eight gallons of water will kill most 

 plant lice if thoroughly sprayed on them. This 

 solution may be used to wash house plants which 

 are infected with scale insects. Apply to such 

 plants with a tooth brush or other stiff brush 

 which will remove the scales. 



TOBACCO Tobacco is deadly to plant lice. "Black leaf" 



may be purchased in bulk and diluted by mixing 

 one gallon with seventy gallons of water and the 

 solution used as a spray. Tobacco decoction is 



