COST AND UTILIZATION OF POWEE ON FARMS. 
35 
The average number of days of horse labor per year per head in. 
the different areas was as follows : 
Days. 
Madison County, Ohio 79. 2 
Seneca County, Ohio 72. 3 
Madison County, Ind 72. 3 
Montgomery County, Ind 72. 4 
Livingston County, 111 54. 9 
Knox County, 111 68.0 
Comparison of these figures with those in table 23 shows that on the 
average each tractor did as much drawbar work during the year as 
was done by 2.8 horses. In Seneca County, Ohio, the work done by 
each tractor was equivalent to the number of days of horse labor 
performed by 2.2 horses during the year, while in Livingston County, 
111., it was equivalent to that performed by 3.5 horses. The horse 
labor equivalent of the work done by tractors in this area was not as 
great as in some of the other areas, but the workstock were used a 
considerably smaller number of days per year than in any other area. 
Kind of Work 
Days of Horse Labor 
10 20 30 40 50 60 70 80 90 100 110 120 130 
1 1 1 1 1 1 1 1 1 1 
Fitting Ground 
Seeding Grain 
Planting Corn 
Cultivating 
Haying 
„ 1 1 1 1 1 1 1 , 
Horse Work^wm 
Tractor Work .tzz: 
Cutting Grain 
Thrashing 
I 1 
Harvesting Corn 
Other Field Work„ 
Hauling Manure... 
« 
Road Hauling 
Fig. 11.— Proportion of different kinds of work done with horses and tractors. 
PROPORTION OF WORK DONE BY HORSES AND BY TRACTORS. 
Table 24 shows the average number of days of horse labor per farm 
used on the different operations, the horse labor equivalent of the 
work done by the tractors, the number of days of horse labor which 
would have been necessary if tractors had not been owned, and the 
percentage of the different operations done with tractors. The 
same items are shown graphically in figure 11. The horse labor 
listed under " Other field work" is the same as that shown in Table 
21, but the tractor work listed there consisted partly of seeding 
grain, cultivating, and harvesting corn (see page 15). 
