30 
BULLETIN 1000, IT. S. DEPARTMENT OF AGRICULTURE. 
HOURS 
JAN. 
10 20 
FEB. 
1020 
MAR 
10 20 
APR. 
10 20 
MAY 
10 20 
JUN. 
1020 
JUL. 
10 20 
AUG. 
10 20 
SEPT. 
10 20 
OCT. 
10 20 
NOV. 
10 20 
DEC. 
10 20 
HOURS 
11 
10 
9 
8 
7 
6 
5 
4 
3 
2 
1 

11 
10 
9 
8 
7 
6 
5 
4 
3 
2 
1 
O 
HOURS 
11 
10 
9 
8 
7 
6 
5 
4 
3 
2 
1 

MAN LABOR 
WHEAT 
BASED ON COST ACCOUNTING DATA 
FROM 
WESTERN NORTH DAKOTA 
! 
— 
dl 
: 
2.4 | 1 
5.2 
.3 
| 26.9 1 29.6 
5.6 
PERCENTAGE DISTRIBUTION 
HOURS 
34.0 
23.3 
19.0 
15.9 
7.8 
11 
10 
9 
8 
7 
6 
5 
4 
3 
2 
1 

HORSE LABOR 
1 
II 
1 1 
; 
/ 
k 
Ml 
m 
m 
■ 
10 20 
JAN. 
10 20 
FEB. 
10 20 
MAR 
to 
i 
3 2 
A 

Y 
10 20 
J UN. 
10 20 
JUL. 
i 
/ 
3 
>0 
G. 
1 
S 
3 
EF 
»0 
T. 
1 
c 
3 < 
>0 
r. 
10 20 
NOV. 
10 20 
DEC. 
Fig. 8.— Distribution of man labor and horse labor per acre for 16 farms, representing the production of 
960 acres of wheat. On eleven of these farms the thrasher furnished a part or all of the crew for thrashing. 
Black bars indicate total hours spent per acre during 10-day periods. 
