﻿NORMAL DAYS WORK FOR VARIOUS FARM OPERATIONS. 



27 



The averages for the spraying of fruit trees are shown in Table 

 XXVI by the number of men in the crew for both hand-power and 

 gasoline-power equipment. Striking increases in the number of trees 

 sprayed are shown for each addition to the force of men in the crew, 

 the other conditions for each type of sprayer being comparatively 

 uniform. Greater numbers of trees are reported for the respective 

 crews with the hand-power type than with the sprayer operated by 

 gasoline engine, but the size of the trees for the hand-power equip- 

 ment is seen to be very much less. In the same table the data for 

 both types of sprayer have been consolidated by height and spread 

 of trees. Increased height is accompanied by a corresponding spread 

 and distance between trees and a reasonably uniform decrease in the 

 number of trees sprayed, the crews being practically the same. 

 There are, of course, many variations in the construction of spraying 

 equipment which affect this operation, such as number of nozzles, 

 leads of hose, pressure used, and type of sprayer. In a more detailed 

 investigation averages in terms of gallons per day or hour, as well 

 as other useful factors, could be made available. Since it was not 

 practicable to cover all of these features in a general inquiry of this 

 kind, further observations are necessary to secure exhaustive data. 



Table XXVI. — A normal day's work with an orchard sprayer, giving the average number 



of trees sprayed daily. 



[Net hours at work, 9.6.] 



SPRAYING BY DESIGNATED CREWS. 



Type of sprayer. 











Number 



Number 



Capacity 



Height of 



Spread of 



of trees 



of men. 



of tank. 



trees. 



trees. 



sprayed 

 per day. 





Gallons. 



Feet. 



Feet. 





1 



250 



25 



28 



110 



2 



180 



20 



19 



191 



3 



196 



20 



21 



252 



1 



50 



18 



13 



54 



2 



57 



20 



19 



134 



3 



68 



18 



16 



305 



Number 

 averaged. 



Gasoline power. 

 Hand power . . . 



NUMBER OF TREES SPRAYED ACCORDING TO THEIR HEIGHT. 



Height of trees. 



Average 

 spread. 



Number 

 of men. 



Number 

 of trees 

 sprayed 

 per day. 



Number 

 averaged. 





Feet. 

 11 



17 

 26 



2.4 

 2.3 



2.2 



329 

 182 

 129 



33 



13 to 20 feet 



83 



Over 20 feet (average 28.23) 



51 







Limited data for spraying field crops planted in rows with a knap- 

 sack sprayer and with a horse-drawn field sprayer are reported in 

 Table XXVII. Knapsack sprayers and poison dusters are used on 



