328 



The Principles of Fruit-growing 



of the operator, the geared wagon wheel, or an engine. 

 The geared sprayers may be useful for small-fruits and 

 grapes, inasmuch as they work while the team walks; 

 but, as a rule, they are not adapted to large orchard trees, 



because enough liquid 

 cannot be thrown 

 while the machine 

 is passing a tree 

 thoroughly to spray it. 

 In recent years, very 

 effective power spray- 

 ers have come into 

 use, mostly employing 

 gasolene or com- 

 pressed air. In plan- 

 tations of four to five 

 acres and more, the 

 power sprayer will 

 probably pay, partic- 

 ularly if the farm 

 grows other crops, as 

 potatoes, that need 

 spraying. The engine may be used at other times to drive 

 a wood-saw, dairy machinery, silage-cutters, well-pumps 

 and other apparatus. 



In low orchards, a low truck may be needed, and in 

 some cases a stone-boat is best; but most orchards will 

 need some kind of high rig, to enable the operator to reach 

 the tops of the trees. Fig. 123 is a standard rig for hand- 

 power work. The tank holds 300 gallons. The pump is 

 placed on the front of the rig (in the seat-rack), and one 

 man drives and pumps. The rig is stopped at every tree. 

 Two leads of hose are used. Another good rig for hand 



FIG. 124. Platform above a barrel outfit, now 

 becoming obsolete for large orchards. 



