COST AND UTILIZATION OF POWER ON FARMS. 9 
SIZE AND AGE OF TRACTORS. 
Table 3 shows the number of tractors of different sizes on the farms 
in the different areas. 
Table 3. — Number of tractors of the different sizes on the 286 farms studied. 
Area. 
Number 
of farms. 
1-plow 
tractor. 
2-plow 
tractors. 
3-plow 
tractors. 
4-plow 
tractors. 
5-plow 
tractor. 
Madison County, Ohio 
34 
34 
42 
56 
60 
60 
1 
26 
22 
34 
31 
29 
32 
6 
11 
7 
25 
27 
28 
1 
1 
Madison County, Ind 
1 
4 
Total 
286 
1 
174 
104 
6 
1 
The 2-plow size predominated in each area. However, the pro- 
portion of farmers using this size was considerably greater in the 
Ohio areas and in Madison Co., Indiana, than it was in Montgomery 
Co., Indiana and in the two Illinois areas. 
Every farmer visited had used his tractor for at least one full 
year's work. The number of months the tractors of different sizes 
had been owned at the time of the investigation is given in Table 4. 
Table 4. — Number of tractors of different ages on the 286 farms studied. 
Age. 
1-plow 
tractor. 
2-plow 
tractors. 
3-plow 
tractors. 
4-plow 
tractors. 
5-plow 
tractor. 
All 
sizes. 
14 months or less 
1 
74 
60 
28 
12 
29 
39 
20 
16 
2 
1 
1 
2 
106 
15 to 26 months 
100 
27 to 38 months 
49 
39 months and over 
1 
31 
All ages 
1 
174 
104 
6 
1 
286 
The one 1-plow tractor had been used just one year, and the 
5-plow tractor had been used four years. 
The farmers were visited in October and November, and those 
who had owned their tractors 14 months or less had used them for 
just one full year's work. The men who had owned their tractors 
from 15 to 26 months had used them for one and a half or two years; 
those who had owned their tractors 27 to 38 months had used them 
two and a half or three years; and those who had owned their 
tractors 39 months and over had done more than three full years 
of work with them. 
Sixty-five per cent of the tractors which had been owned two 
years and less were 2-plow machines. However, only 50 per cent 
of those that had been owned over 2 years were of the 2-plow size. 
On the average, the 2-plow tractors had been owned 21 months, 
the 3-plow tractors 25 months, and all tractors 23 months. 
56390°— 21— Buil. 997 2 
