26 
BULLETIN 943, U. S. DEPAPvTMEXT OE AGRICrLXrEE. 
per acre in Morton County, X. Dak. The hours per acre of horse 
labor in these two counties were 19.2 and 25.7, respectively. In the 
winter-wheat areas a greater variation was found, man labor varying 
from 7.3 hours per acre in Pawnee County, Kans., to 17.5 hours in 
Jasper County, Mo., and horse labor from 19.7 to 39.5 hours, respec- 
tively. When the total labor was divided as to land preparation and 
seeding, and harvesting and marketing, it was found that m nearly 
every case the bulk of total horse labor came in the fall and spring 
when the land was prepared and the crop seeded. In the spring- 
wheat areas there was usually little difference in man-hours as thus 
divided. Generally any difference that occurred indicated that 
more man labor was required in land preparation and seeding than 
in harvesting and marketing. In the winter-wheat areas ^vider 
variations occurred in the two divisions, and usually the man-hours 
for harvesting and marketing were higher than for land preparation 
and seeding. 
Table XII. — Average hours of man and horse labor, hy counties, spring and icintcr 
irheat, 1919 (360 farms). 
[Farms using tractors or trucks not included.] 
Region. 
Preparation Harvesting and 
and seeding marketing 
(hours per (hours per 
Total. 
acre). 
acre). 
Man. Horse. Man. Horse. Man. Horse. 
SPRING 'tt-BEAT. 
North Dakota: 
Grand Forks County 3.6 
Morton County ....". 5. 4 
South Dakota: 
Spink County 3. 1 
Minnesota: 
Clay County 4. 2 
Traverse County 4. 1 
■ttTNTER -WHEAT. 
Kansas: 
Ford Covmty 2. S 
Pawnee Coiinty 2. 6 
McPherson County 4. 5 
Missouri: 
Saline County 5. 1 
Jasper Coimt v S. 1 
St. Charles County 8. 2 
Nebraska: , 
Phelps Count y 3. 7 
Saline Count v 6. 7 
Krith Coimt v , 2. 7 
14.6 
19.6 
15.1 
17.3 
12.0 
11.7 
IS. 8 
IS. 5 
26.8 
25.1 
13.0 
24.7 
9.3 
2.2 
3.S 
3.0 
4.6 
6.1 I 
4.0 
4.7 
7.3 
8.4 
4. S 
4.7 
4.S 
8.8 
8.0 
ai 
8.1 
9.4 
8.9 
11.1 
12.7 
11.5 
5.5 
8.1 
6.9 
8.6 
12.4 
10.1 
5.8 
9.2 
8.2 
8.8 
7.3 
9.3 
13.2 
17.5 
17.1 
9.2 
14.8 
9.6 
20.1 
22.4 
25.7 
20. S 
19.7 
26.9 
20.6 
39.5 
36.6 
21.6 
37.1 
19.4 
VARIATION- IX LABOR REQUIREMENTS. 
From Tables XIII and XIV it is apparent that there was a wide 
variation among individual farms in the amount of labor devoted to 
growing an acre of wheat. In these tables the farm records included 
in Table XII were grouped according to total man houi-s per acre. 
