484 CALIFORNIA FRUITS: HOW TO GROW THEM 



ley. A condensed statement of useful insecticides is issued by the 

 Station, prepared by Professor H. J. Quayle, as follows : 



1. LIME SULPHUR: 



Quicklime, 33 pounds ; sulphur, 66 pounds ; water, 200 gallons. 

 Sift sulphur through box with screen bottom into boiling tank with 

 50 gallons of water. Add the lime and boil 45 minutes to one hour. 

 Stir frequently. Strain through cheese cloth or burlap and dilute to 

 make 200 gallons. If extra lime is desired strain in milk of lime when 

 spray is ready for use. 



2. COMMERCIAL LIME SULPHUR: 



If of 32 Baume dilute 1 to 9. If 36 dilute 1 to 11. 

 Either of the above for San Jose and other armored scales to be 

 applied during dormant season, preferably in early winter or early 

 spring. For Peach Moth, as the buds are expanding in the spring. 



3. DISTILLATE 28 to 34 Baume : 

 Distillate, 10 to 20 gallons ; water, 200 gallons. 



For use only with power sprayer with good agitator, which is neces- 

 sary to make a mechanical mixture of the oil and water. 



For the Brown Apricot, Black, and other unarmored scales, and for 

 Woolly Aphis, to be applied during dormant season, preferably in early 

 winter. 



4. DISTILLATE POTASH : 



Distillate, 10 gallons ; lye or caustic soda, 5 pounds ; water, 200 gallons. 

 Preparation and uses same as under 3. Has the advantage of free- 

 ing tree from moss. 



5. DlSTILLLATE EMULSION : 



Stock emulsion: Hot water, 12 gallons; fish oil (see 10) or whale-oil 



soap, 30 pounds ; distillate 30 to 34, 20 gallons. 



Add soap to hot water in spray tank with agitator going. After 

 soap is dissolved add oil slowly, keeping 1 mixture agitated. Pump out 

 through nozzle at 175 pounds pressure in storage tank. 



For use take: Stock emulsion, 11 gallons; blackleaf 40, 1 pint; water, 



200 gallons. 



Place oil emulsion in spray tank, start agitator and add the water. 

 When diluted add the Blackleaf. 



For thrips, Black Peach Aphis, and other plant lice. 



6. KEROSENE EMULSION: 



Dissolve y-z pound soap in 1 gallon hot water; add 1 gallon kerosene. 

 Mix thoroughly with spray pump by turning nozzle back into mix- 

 ture. 



a. For plant lice and other sucking insects during growing season, 

 dilute with 15 to 25 gallons water. 



b. For scale insects, Woolly Aphis and other sucking insects during 

 dormant season, dilute with 5 to 10 gallons water. 



For use on small scale with hand sprayer. 



