REQUIREMENTS OF FIELD CROPS. 
21 
HOURS 
JAN. 
FEB. 
MAR. 
APR. 
MAY 
JUN. 
JUL. 
AUG. 
SEPT. 
OCT. 
NOV. 
DEC. 
HOURS 
24 
22 
20 
18 
16 
14 
12 
10 
8 
6 
4 
2 
- 
24 
22 
20 
18 
16 
14 
12 
10 
8 
6 
4 
2 
SUGAR BEETS 
BASED ON ENTERPRISE RECORDS 
FROM 
GREELEY COLORADO 
- 
MAN LABOR 
.§=»> 

o 
HOURS 
24 
22 
20 
18 
16 
14 
12 
10 
8 
6 
4 
.9 | .8 | 4.4 | 12.1 | 10.4 | 10.5 | 6.4 | 4.7 | 19.9 | 17.9 | 11.1 
.9 
HOURS 
24 
22 
20 
18 
16 
14 
12 
10 
8 
6 
4 
2 
o 
PERCENTAGE DISTRIBUTION 
2.2 
1.9 
17.8 
11.2 
2.9 
3.3 
4.1 
2.2 
15.5 
15.5 
21.2 
2.2 
HORSE LABOR 
• 
- 
2 

JAN. 
FEB. 
MAR. 
APR. 
MAY 
JUN. 
JUL. 
AUG. SEPT. 
OCT. NOV. 
DEC. 
Fig. 5.— Distribution of man labor and horse labor by months, as shown by 195 enterprise survey records 
covering 2 years and involving the production of 5,028 acres of sugar beets. The total man labor includes 
operator's labor and contract labor, which has been converted to equivalent hours. Black bars indicate 
total hours spent per acre during periods of one month. 
