General Suggestions. 



Spray at the right time. Too many people delay spraying 

 until too late to accomplish much good. 



Be prepared for breakdowns of pump, hose or nozzle, and 

 have repair parts at hand, particularly extra couplings and 

 hose splicers for burst hose. 



Have your materials for making the spray all together and 

 near a water supply. Much time is lost in mixing materials 

 where this is not the case. 



Use the right treatment and apply it thoroughly if you 

 desire good results. Remember, however, to stop spraying 

 before the spray runs off. It is only what stays on the tree 

 which does the work, and too much put on will wash off some 

 which would otherwise remain. 



"Kill two birds with one stone" whenever possible. Some 

 sprays consisting of a combined insecticide and fungicide, 

 applied at the right time, will kill several different kinds of 

 insects which may be present, and also prevent several of the 

 fungous diseases. 



INSECTICIDES. 



Insects either chew and swallow solid food or suck the sap 

 from plants. For the former class, poison is usually spread 

 over their food (generally leaves), to be swallowed with it, and 

 such poisons are termed stomach poisons. For the other class, 

 stomach poisons are useless, and materials must be used which 

 kill the insects by touching them. Such materials are called 

 contact insecticides. They are not necessarily poisons in the 

 usual sense of the word. 



Stomach Poisons (for Chewing Insects). 



1. Paris Green (Dry). 



Paris green, 1 pound. 



Flour or plaster, 100 pounds. 



Mix thoroughly and apply evenly; best when dew is on the 

 plants. The use of Paris green in this form is quite hmited, 

 spraying it being preferable in most cases. 



