Spraying Experiments in Nebraska 89 
Fig. 20 — A small power outfit which may be operated by one man alone 
Table 57 C shows the average cost of spraying with the one- 
man type of power sprayer similar to fig. 20. A machine of this 
capacity is efficient for orchards of from 400 to 600 trees. 
Fig. 21 — Power outfit of the horizontal pump type; 8- to 10-gallons-per- 
minute capacity 
Table 57 D shows the average cost of spraying with a type of 
machine similar to that shown in figs. 21 and 22. A machine of 
this capacity is efficient for an orchard of 600 to 1,000 trees. 
