SPRAY PUMPS AND SPRAYING 



51 



12. Jarring trees is useful to dislodge beetles and let them fall 

 on sheets below. 



13. Hand Picking. Large caterpillars and other insects may 

 be easily picked off of trees and .plants. 



14. Burning of Caterpillar Nests. Tent caterpillars and the 

 fall web worm may be burned by touching their nests with a burn- 

 ing rag and saturated with kerosene wired to a pole. This should 

 be done at a time when the caterpillars are "at home." 



FIG. 71. Removing dead 



>perdozer. 



SPRAY PUMPS AND SPRAYING 



Cheap spray pumps should be avoided, and a high price should 

 not be paid for an inferior article, which is not dependable. A 

 hand atomizer or sprayer for use in flower gardens or where only 

 a few plants are concerned can be bought for from $1.00 to $3.00; 

 a bucket pump (Fig. 72) used in connection with bucket or 

 pail may cost from $6.00 to $7.00, while knapsack sprayers (Fig. 

 73) cost from $10.00 to $14.00, and a barrel pump, most serviceable 

 and satisfactory for a medium-sized orchard, will cost from $14.00 

 to $16.00, without the barrel. Power sprayers, run by gasoline, 

 will amount in price from $125.00 to $300.00. 



The essential points are that all valves are of the ball type, and 



