COST AND UTILIZATION OF POWER 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, III 54. 9 



Knox County, 111 6S. 



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 IIP 120 130 



Plowing 



Fitting Ground 



Seeding Grain 



Planting Corn 



Cultivating 



Haying 



Cutting Grain 



Thrashing 



Harvesting Corn _. 

 Other Field Work- 

 Hauling Manure- 

 Other Work on Farm 

 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). 



