INJURIOUS AND BENEFICIAL INSECTS OP CALIFORNIA. 465 



CRIDDLE MIXTURE 



Though this mixture is somewhat disagreeable to make and handle, 

 it is exceedingly cheap and effective, especially for grasshoppers. 



Fresh horse dung 60 pounds 



Common salt 2 pounds 



Paris green 1 p0U nd 



The Paris green is mixed with enough water to form a paste and 

 is then stirred thoroughly into the horse dung with the salt. 



These poisoned baits are scattered about in fields infested with grass- 

 hoppers, armyworms, cutworms and various other destructive chew- 

 ing insects or they may be placed in advance of the oncoming hordes 

 A very important thing in handling the poisoned baits is to see that 

 they are kept moistened all the time, as they become worthless when 

 dry. To prevent this drying out the mixture should be put out in 

 small piles and occasionally moistened. They may also be placed 

 under boards or in the shade, while for cutworms and wireworms it 

 is often advisable to bury them in the ground. According to Prof. 

 C. W. Woodworth, this mixture has not proven very effective in 

 California. It should only be used where grasshoppers are observed 

 to gather freely on fresh horse dung. 



CITRIC BRAN MASH 



A mash recommended by Hunter and Claassen 329 has been used in 

 this State very successfully to combat grasshoppers. The formula 

 is in two parts as follows : 



Part I. 



White arsenic (or Paris green) 2i pounds 



Bran 50 pounds 



Mix these dry. 

 Part II. 



Lemons (chopped fine, including rind) i dozen 



Syrup or molasses (cheap) 4 quarts 



Water 1 5 gallons 



Mix these together. 



Mix Part I and Part II and add enough water to make a wet mash. 

 The parts should not be mixed until ready for use. Distribute broad- 

 cast in front of the pests early in the morning. 



CONTACT INSECTICIDES FOR SUCKING AND BITING 



INSECTS 



LIQUIDS 



LIME-SULPHUR 



Lime-sulphur is easily the most important insecticidal spray now 

 used, and its fungicidal properties make it even more useful to the 

 orchardist. It is especially valuable for controlling scale insects. 

 the peach twig-borer and fungi on deciduous fruit trees, though if 

 properly weakened it may also be used as a summer spray, particu- 

 larly for the red spiders and mites. 



329 Hunter, S. T., and Claassen, P. W., Jr. Ec. Ent. Vol. VII, p. 76, 191-1. 

 30—13664 



