39 



A usual defect in spraying outfits is tliat the hose is not of sufficient 

 length. Each lead of hose should be from 25 to 35 feet long (or from 

 50 to 75 feet where the second row on each side is to he sprayed) 

 and. provided with an 8 to 12 foot bamboo extension rod. This 

 length of hose will permit the complete spraying of a tree before 

 leaving it, insuring more thorough work than if but one side is 

 sprayed at a time, and the amount of driving necessary will be reduced 

 by one-half. ' (See fig. 7.) In spraying apple orchards an extension 

 rod 10 feet in length will ordinarily be required, although shorter or 

 longer rods are frequently used. 



The nozzle is perhaps the most important part of the spraying 

 outfit. There are many kinds of nozzles on the market, most of which 



Fig. 7.— Power sprayer at work in the Gipple orchard. 



are very unsatisfactory for orchard spraying. The Vermorel type of 

 nozzle is best and should be used. The orchardist should not make 

 the mistake of fitting an otherwise effective spray outfit w^th a poor 

 nozzle. With hand-power pumps a double Yermorel nozzle for each 

 lead of hose is satisfactory, but for power outfits triple or even quad- 

 ruple nozzles may be used to good advantage. Many orchardists 

 make the mistake of using nozzles with large apertures, thinking it 

 desirable to discharge large quantities of the liquid. Small or 

 medium-sized openings are required for producing a fine spray. 



In spraying high trees some form of elevated platform should be 

 constructed on the wagon, on which one of the nozzle men may stand 

 to spray the higher parts of the trees, the other men spraying from 

 the ground as high as may be reached. 



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