28 
BULLETIN 3, XT. S. DEPARTMENT OF AGEICULTUEE, 
truck and sinall-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. 
