114 The Fru it-Growers Guide-Book 



of all practical orchardists who are making a success of 

 their spraying work, that the hand power outfits are not 

 suited to an orchard covering more than four or five acres. 

 This is because the necessary pressure and speed cannot 

 be obtained in hand power machines to cover the larger 

 acreage in the limited amount of time that is available. 



In point of time, any application of spray mixture must 

 be applied when it will do the most good, and with insects 

 this limits the number of working days to just a few, pos- 

 sibly ten days, when the insects can be most effectively 

 reached. The spraying must be done during that time, as 

 either before or after that period the spray mixture 

 will not be so effective as the insects will have passed out 

 of reach. The same thing is true of fungous diseases and the 

 grower must know something of the life and habits of the 

 pests he is combatting. 



The time has long since passed when it is reasonable 

 for any orchardist to ask if it pays to spray. That problem 

 has been so thoroughly proven and so widely advertised 

 that anyone who asks such a question, especially if he has 

 been anyway concerned in fruit growing or has read, even 

 casually, any publication treating on the subject of fruit 

 growing, cannot help being convinced that spraying does 

 pay, and pay well, when properly done. 



But to make it pay the best the spraying equipment 

 must be suited to the conditions under which it must be 

 used. The chief points to be considered in this respect are 

 the kind of plants to be sprayed that is, whether they are 

 strawberries, grapes or tree fruits; the acreage to be cov- 

 ered, for if there are more than five, or at the most ten 

 acres, hand power outfits will not proye as effective as 

 power ma'chines. Then in the make or style of machine 

 one needs to consider the general construction and ar- 

 rangement of the outfit; the ease and convenience of han- 

 dling under actual working conditions; the probable ability 

 of the machine to handle the required work; the efficiency 

 and suitability of the accessories. 



In localities where spraying has not become established 

 as one of the important practices in connection with or- 



