CHAPTER XI 



SPRAYING 



General Considerations. The or- 

 chardist, the nurseryman, the gardener, 

 and the florists have already learned the 

 necessity of spraying. It often determines 

 whether they shall lose a large part of the 

 crop or get from it the largest possible 

 profit obtainable. It is doubtful if sweet 

 pea growers have come to this important 

 realization. Many writers on sweet peas 

 have in the past attempted to give the im- 

 pression that this species is usually free 

 from insect and fungous pests. This has 

 unfortunately led to an indifference that 

 resulted in the quick dissemination of a 

 number of dangerous diseases. The streak 



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