58 
BULLETIN 1181, U. S. DEPARTMENT OF AGRICULTURE. 
CALCULATION OF MAN LABOR. 
The calculation of man labor on these crops is as follows: 
Jan. 
Feb. 
Mar. 
Apr. 
May. 
June. 
July. 
Aug. 
Sept. 
Oct. 
Nov. 
Dec. 
15 acres cotton, 1J times the 
Days. 
9 
3 
Days. 
4; 5 
6.0 
Days. 
4.5 
7.5 
Days. 
7.5 
10.5 
Days. 
28.5 
i. ",.:> 
.5 
Days. 
25. 5 
4.5 
5.0 
2.0 
2.1 
Days. 
Z1.0 
3.0 
.4 
Days. 
Days. 
12.0 
3.0 
2.0 
Days. 
25.5 
10.5 
1.5 
2.0 
3.8 
Days. 
18.0 
Days. 
10.5 
15 acres corn, 1£ times the 
5 acres fall oats, one-half of 
5 acres late cowpeas, one- 
1 acre sweet potatoes, one- 
.25 
.45 | .45 
1.9 
Total 
12.0 
10.75 
12. 45 
18. 45 44. 4 
39.1 
24.4 
17.0 
43.3 
18.0 
10.5 
The grand total for the year is 250.35 man days. 
The assumed yields for these crops are stated in Table 2. If the 
yields are much larger or smaller it will necessitate some changes in 
the number of days of labor at harvest time. 
With this crop system the work would be heavy in May and June 
and again in October, and there wxmld be no work in August. The 
44.4 days of labor in May would be equal to the work of two men for 
22.2 days. It is doubtful whether two men could do this work, 
however, because after taking out Sundays and rainy days there 
would ordinarily be only 20 days available for crop labor. 
TIME AVAILABLE FOR CROP WORK. 
A fair average of time available for crop work in Arkansas in vari- 
ous months is as follows: January, 10 days; February, 10 days; 
March, 15 days; April, 18 days; May, 20 days; June, 20 days; July, 20 
days; August, 20 days; September, 20 days; October, 20 days; Novem- 
ber, 15 days, and December, 12 days. Total, 200 days. 
CALCULATION OF HORSE LABOR. 
The same method would be used in calculating horse labor, and the 
same form of sheet will answer for both. It will not be necessary to 
give the calculation in detail, but the results in days of horse labor 
are as follows: January, 13.5 days; February, 20 days: March, 24.55 
days; April, 26.3 days; May, 28.25 days; June, 31.8 days; July, 19.3 
days; August, none; September, 11.5 days; October, 19.1 days; No- 
vember, 3 days; December, 1.5 days. Total, 198.8 days. 
The busiest month for the horses is June with 31.8 horse days, 
nearly the equivalent of using two horses for 16 days. 
It should be borne in mind that some of the work can be shifted 
from one month to another if necessary. For instance, in the fore- 
going problem, if the fall oats were planted after corn it would neces- 
sitate putting all the work of preparation in October or possibly part 
of it in November. Some work on crops is fixed as to date and. some 
is not. The date of harvesting small grain is fixed in time, but the 
work of hauling manure or plowing for a spring crop may be shifted 
from fall to spring or from spring to fall. 
It will be helpful in calculating such a shift to note the amount of 
labor by operations. The work of preparation and planting is a cer- 
tain amount of work, but is not always fixed as to date. 
An illustration of using common sense in shifting work from one 
month to another is shown in calculating the horse work on 20 acres 
