16 
BULLETIN 1296, U. S. DEPARTMENT OF AGRICULTURE 
The width, of the harrow and number of horses used are important 
factors affecting the labor used for this operation. On farm 7 a 
4-section harrow was used with a 10-horse team, resulting in a low 
amount of man labor per acre and a relatively high amount of horse 
FARM 
NO. 
HOURS 
14 
.2 1 
7 
.2 1 
12 
.2 2 
17 
.23 
13 
.2 3 
-15 
.2 6 
8 
.3 1 
10 
.3 1 
5 
.3 3 
1 
.3 3 
4 
.3 8 
18 
.47 
1 1 
.52 
LABOR IN HARROWING FOR WHEAT 
HORSE HOURS PER ACRE 
HOUR"; ' 5 ' >-5 2 
1. 8 
2. I 1 
MAN HOURS 
PER ACRE 
.5 
I WEIGHTED 
I AVERAGE 
.8 9 
.90 
I. I 7 
1.28 
1.60 
1.88 
1.9 I 
I. 98 
I. 70 
2.28 
2.0 9 
1 
niiuiABHm 
S^SZ! 
. WEIGHTED 
A VERA GE 
X y' 1.67 
l"" 
1 | 
2.5 
Fig. 10. — From 4 to 10 horses are used for harrowing, depending upon the number of sections used and the 
way they are weighted down 
work. A 4-section harrow was pulled by a tractor on farm 6. This 
farm had the lowest labor requirement for harrowing. 
The farm having the lowest requirement of man labor for drilling 
and next to the lowest requirement of horse work was the only farm 
using 6 horses and a 16-hole drill. 
LABOR LN DRILLING WHEAT 
HOF.SE hours per acre 
h„,. dc ° * ' 1-5 2 2.5 3 3.5- 
1.78 
1.70 
1.93 
1.97 
! 1 
1 weighted 
. AVERAGE 
1 2.27 
V 
2.04 
2.24 
2.34 
2.45 
2.46 
2.55 
2.58 
2.61 
2.82 
2.92 
3.17 
II.W1 
1 ,- 
Fig. 11.— By using 6 horses and a 16-hole drill, farm 4 drilled over 30 acres per day. On most farms 4 
horses and a 12-hole drill are used 
In general, the low per acre requirements of man labor and horse 
work are associated with the use of large implements and large teams. 
In choosing his equipment the farmer must decide between a saving 
in the hours of man labor and horse work to be used and an increased 
investment in larger types of equipment. 
