20 



Hand-power spraying outfits can be purchased and put in working 

 order for from $15 to, $75. The gasoline-power outfits can be pur- 

 chased complete for from $280 to $400. A hand-power sprayer, if 

 used for arsenites alone and given good care, ought to last five or six 

 years with but few repairs, and the gasoline sprayer can be made to 

 last as long. By using the engine for purposes other than spraying 

 it can be made to pay for itself. 



The principal cost of spra3ang is the labor, as the material is com- 

 paratively^ a small item. The cost of sprajang 1,000 8-year-old trees 

 in the West once with arsenite of lime with soda using 2i gallons per 

 tree is as follows: 



Hand-power outfit: 



Man and team 4 days, at $3.50 $U. 00 



Two men 4 days, at $1.50 each 12. 00 



Materials 1.12 



Total - - - - - $27. 12 



Gasoline-power outfit: 



Man and team U days, at $3.50 5. 25 



One man li days, at $1.50 2. 25 



Materials 1. 12 



Gasoline, Ik gallons 55 



Total $9. 17 



The above estimates are for labor in the far West and would be 

 much less in the East. It is considered that the team and labor are 

 employed at the current rates; but as teams and men are already 

 emploj^ed on all farms, this cost is far in excess of what it would actu- 

 ally cost the farmer. According to the preceding estimates it would 

 cost 2.7 cents per tree with hand power and .9 cent per tree with 

 gasoline power. The additional cost of spraying to the fruit grower 

 would be about 1 cent per tree with hand power and about i cent per 

 tree with gasoline power. 



How to Apply tlie Spray. 



The spray should be applied to the leaves and foliage so that a thin 

 eoating will remain after the water has evaporated. To do this the 

 spray should be applied with great force so as to form a dense mist. 

 At all times the solution in the tank should be kept thoroughh' agi- 

 tated, especially if Paris green is used. Probabh" the most rapid prog- 

 ress in spraying can be made in the following way: Drive the outfit 

 between two rows and spray half of each tree in each row. The routes 

 followed in an orchard should be governed by the position of the 

 water supply. If the wind is blowing it is best to go parallel with it 

 rather than at right angles to it, and advantage ma^' be taken of the 

 wind by allowing it to blow the mist into the trees. 



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