Report of State Board of Horticulture. 93 



Boil together for forty-five minutes and keep in a tight ves- 

 sel. Add one quart of this to a barrel (fifty gallons) of water 

 for use. 



This insecticide has been recommended by a number of ex- 

 periment stations. 



INSECTS THAT SUCK THE JUICES OF FRUIT OR TREES. 

 SPRAY SO. 4-SULPHUR, LIME, AND SALT. 



Oregon Foi-mula. 



50 pounds unslaked lime. 

 50 pounds flower of sulphur. 

 25 pounds common salt.* 



Slake the lime in enough water to do it thoroughly ; add 

 the sulphur and boil for an hour at least, adding water if 

 necessary. Then add the salt and boil fifteen minutes more. 

 Add water to make one hundred and fifty gallons and spray 

 hot through a coarse nozzle. 



SPRAY NO. 5— SULPHUR, LIME, AND SALT. 



MarlaWs Formula, {from Smith). 



30 pounds unslaked lime. 

 30 pounds sulphur. 

 15 pounds salt. 

 60 gallons water. 



Boil with steam for four hours and apply hot. 



SPRAY NO. 6— WHALE-OIL SOAP, OR QUASSIA CHIPS. 



Boil one pound of soap dissolved in four gallons of water ; 

 or, boil for two hours one pound of quassia chips ; add water 

 to extract to make four gallons. 



FUNGICIDES. 

 SPRAY NO. 7-BORDEAUX MIXTURE. 



6 pounds copper sulphate (blue vitriol) . 

 6 pounds lime (unslaked) . 

 50 gallons water. 



Dissolve the copper in hot or cold water, using a wooden 

 or earthen vessel. Slake the lime in a tub, adding the water 



♦Exhaustive experiments at Illinois station prove that spray No. 4 will be more 

 effective by substituting for the salt one and one half pounds sulphate of copper for 

 each fifty gallons of water. 



