﻿28 



BULLETIN 3, U. S. DEPARTMENT OF AGRICULTURE. 



truck and small-fruit crops or in young orchards. In spraying with 

 a field sprayer on potatoes and other field crops there appears to be 

 only a slight gain for 2-horse over 1-horse teams, although most 

 users of this equipment employ two horses. A 4-row sprayer will 

 cover from 12 to 14 acres in a day. The reported averages in the 

 table have been adjusted by reducing them about 10 per cent, and 

 the allowances for each difference in width of 6 inches have been 

 derived from analytical tables. 



Table XXVII. — A normal day's vjork in spraying with a knapsack sprayer and field 

 sprayer, giving the average acreages reported and adjustments for widths sprayed. 







Net hours at work, 9.6.] 









Sprayer. 



Width 

 sprayed. 



Number 

 of rows. 



Number 

 of horses. 



Acres 

 per day. 



Number 

 averaged. 



Adjusted 

 acreage. 



Allowance 

 for each 6 

 inches in 

 width 

 (acreage 

 per day). 





Feet. 

 3 



11.5 

 11.0 



1 



4 

 4 





3.04 

 12.76 

 13.54 



35 

 66 

 90 



2.75 

 11.50 

 12.25 



0.40 



Field 



■ 1 

 2 



.50 





.60 



HARVESTING HAY. 



In Table XXVIII the original averages for the operations of mow- 

 ing, raking, tedding, and cocking hay for those widths and teams 

 most frequently used have been brought together. These averages 

 have been adjusted by reducing them about 10 per cent, and a scale 

 of allowances per foot in width for other feasible widths in each case 

 has been erected. 



In mowing hay the 2-horse unit is practically universal. In the 

 analytical tables there was a slight increase in acreage per foot of 

 width with increase of the width of the sickle for sizes up to 7 feet. 

 The limit of mechanical efficiency appears to be approached at 7 feet 

 wide. 



From 2,105 reports on raking hay it appears that a 2-horse team is 

 about 45 per cent more efficient than one horse when used with rakes 

 of the widths reported. The duty of each foot in width of rake is 

 from 1.45 to 1.60 acres daily. Each horse should cover from 9 to 14 

 acres. The 8-foot width is the most used with one horse and the 

 10-foot width with two horses. 



In tedding hay with a hay tedder or kicker two horses appear to 

 be 45 per cent more efficient than one, and 82 per cent use 2-horse 

 teams for this work. Each foot in width of tedder should cover 

 from 1.4 to 1.7 acres daily, and each horse could be expected to go 

 over from 7 to 10 acres. 



The factor for cocking hay after bunching with a rake is for an 

 average yield for the 1,122 reports of 1.87 tons per acre. 



