158 THE AMERICAN PEACH ORCHARD 



1. Fall or winter treatment with soluble oil on 

 young trees with light infestation of scale, or on 

 old orchards with severe infestation. (See page 152.) 



2. Spring treatment with lime-sulphur for San 

 Jose scale, leaf curl and monilia. (See page 145.) 

 Bordeaux mixture is sometimes used for this spring 

 treatment when scale is not present. 



3. Summer treatments with self-boiled lime- 

 sulphur for peach scab and monilia; or with 

 lime-sulphur plus arsenate of lead for curculio. 

 (See page 149.) 



GENERAL SUGGESTIONS 



There are many things to look after in spraying. 

 One must be ever on the alert, and must be well 

 informed as to the purposes and methods of his 

 practice. The following specific suggestions are 

 based on long experience, and should always be 

 borne in mind: 



1. Have a definite knowledge of the life and habits 

 of the insect or the fungus to be fought. Be sure 

 to understand in particular the vulnerable points, 

 the points at which the foe is to be attacked, and the 

 way it is to be circumvented. Spraying with paris 

 green to kill San Jose scale is as useless as voting 

 for the American Express Company in order to in- 

 troduce parcel post. 



2. Spray thoroughly. Sloppy, slovenly work is 

 bad enough anywhere, but carelessness in spraying 

 defeats the whole object of the work about as fully 

 and promptly as anything can. 



3. Spray annually. It is like taking a bath every 

 summer whether a man needs it or not. The chances 

 are he will need it. Spraying is a sort of an insur- 

 ance. One cannot wait till insects are devouring his 



