TRACTORS AND HORSES IN THE WINTER WHEAT BELT. i ¥é 
used. Often the total power which the engine was capable of develop- 
ing was not required for the work, but the method of conducting 
the investigation was such that it was not possible to obtain a more 
accurate measure of the power actually utilized for the different 
classes of belt work. 
For all farms the tractors did 33 per cent of the belt work. Thresh- 
ing constituted 82 per cent of the total belt work done and the tractors 
SOUTHERN AREA BFE Bilal Hours per un oer Year 
00 1500 2000 
Thrashing ---..-- 
Other Belt Work. 
WESTERN AREA 
Thrashing_.--.--- 
Other Belf Work_. | 
NORTHERN AREA 
Thrashing....-..-- | 
Other Belt Work.. | 
ALL FARMS 
Thrashing....___.- 
Other Belt Work .. 
( rr) qm /72c/ors 3 Onmer Engines 
SS: 7 
Fic. 8. Proportion of belt work done with tractors and other engines. 
furnished the power for 24 per cent of it. On the farms where com- 
bines were used the power furnished by the engines on the threshers 
has been included under “other engines’ and the power furnished 
by the tractors for drawing the combine is included under drawbar 
work. Figure 8 shows graphically the relative importance of thresh- 
ing and other belt work in each area and the percentage done with 
the farm tractors. 
TABLE 20.—Percentage of belt work done with tractors and other engines. 
[Horsepower hours per farm.] 
| | | 
ee Seat 3 Shred- | Other 
Thresh- | Grinding} Shelling | Cutting . : 
Area. ee de ding belt Total. 
| ing feed. corn. silage. fodder. work. 
| ' 
Southern area: | | 
eee 504 44 4 18 0 | 49 | 619 
Other engines.... - pees REP. 1, 383 | 1 3 0 0 15 1, 402 
Pei ees ee 1, 887 | 45 7 18 0 64 2,021 
Percentage done with tractors... 27 | 7.) ee ee 1 1] eee ays 77 31 
Western area: | 
_ De eee 303 | 113 8 38 4 35 501 
Other engines............... | 1,379 |} @) 2 12 0 0 1, 393 
UE Ly es hd 1,682 113 10 50 4 35 1,894 
Percentage done with tractors... 18 | 100 80 ((iy) Rae eee ee 100 26 
Northern area: 
OP Re oes 358 | 96 155 65 64 74 812 
OGGE Enemies... 5... _ = - 926 | 35 155 0 5 1 1,122 
4 ee eee eee 1,284 | 131 310 65 69 75 1, 934 
Percentage done with tractors... 28 | 73 50 100 93 99 42 
All farms: 
Le ee 391 | 84 60 41 24 ae! 654 
Other engines............... 1,218 | 13 57 4 2 5 1,299 
_ SS Ae eee 1,609 | 97 117 45 26 59 1, 953 
Percentage done with tractors... + 24 | 87 51 91 92 92 3 
1 Less than 0.5 horsepower hour. 
60589 ° —24_3 
