REQUIREMENTS OF FIELD CROPS. 15 
Table 7. — Cotton: Percentage distribution of costs per acre (1918 crop). 
" 
Anderson Co., S. C. 
Ellis Co., Tex. 
Item. 
Distri- 
bution of 
operating 
expense. 
Distri- 
bution of 
total 
costs. 
Distri- 
bution of 
operating 
expense. 
Distri- 
bution of 
total 
costs. 
Per cent. 
63.8 
10.0 
Per cent. 
54.3 
8.5 
Per cent. 
60.0 
15.1 
Per cent. 
38.1 
Mule labor 
9.6 
Materials: 
Seed. . . 
2.5 
.6 
8.7 
.2 
2.1 
.6 
7.4 
.2 
3.9 
(a) 
2.5 
(a) 
.2 
.1 
12.0 
10.3 
4.1 
2.6 
Other costs: 
2.9 
2.3 
9.0 
2.5 
2.0 
7.6 
6.2 
5.1 
9.5 
, 4.0 
3.2 
5.9 
Total other costs 
14.2 
12.1 
20.8 
13.1 
14.8 
36.6 
$110 
$190 
a Less than one-tenth of 1 per cent. 
POTATOES. 
In this study 26 potato-growing districts were visited and 918 
farmers were interviewed (Table 8). The acreage of potatoes rep- 
resented was as follows: Early potatoes (southern districts), 11,487; 
midsummer potatoes (central coastal plain), 5,598; late crop pota- 
toes in Maine, New York, Michigan, and Wisconsin, 6,373; in Iowa 
and Minnesota, 4,763; in Colorado, 2,210; in Washington, 782 — 
total, 31,213 acres. 1 
There was a wide range in normal man-labor and horse-labor 
requirements. It would be natural to look for some uniformity in 
the man-labor and horse-labor requirements within a given region, 
more particularly if the conditions under which the crop was grown 
happened to be fairly uniform and the yieMs were approximately 
the same. In the region producing the midsummer crop of potatoes 
the amount of man labor utilized in marketing was much the same 
for all districts. However, the central New Jersey district, reporting 
the highest yield per acre, had the minimum labor requirement. 
Farm manure applications varied from 7 to 12 loads per acre in 
the late potato districts and three of the midsummer districts. 
Commercial fertilizers were used in larger quantities in the early 
and midsummer districts than in the late producing areas. The 
Maine districts may be taken as exceptions from this general state- 
ment. Comparatively light applications were made in the three 
1 The enterprise records which were used in compiling the information on potatoes were obtained during 
the years 1912-1913 by H. H. Clark and L. L. Corbett. A report prepared by E. H. Thomson in connec- 
tion with this cost survey was available for reference in compiling Table VIII. 
