54 BULLETIN 1202, U. S. DEPARTMENT OF AGRICULTURE. 
The annual feed consumption per head is shown in Table 63. In_ 
the southern and western areas the horses on the non-tractor farms | 
did considerably more work per head than on the tractor farms and~ 
received a correspondingly greater amount of feed. In the southern 
area the value of the feed consumed per head on the nontractor 
farms was about $10 greater than on the tractor farms, and in the 
western area about $5 greater. The time spent per head doing chores 
was also greater on the nontractor farms in these areas. The average 
depreciation charge per head amounted to about 7 per cent of the 
value of the in stock for all nontractor farms, and to between 
8 and 9 per cent for all tractor farms. On account of the greater 
number of colts, the colt credit per head was somewhat greater on 
the nontractor farms. 
TABLE 63.—Feed for work stock on farms without tractors. 
Average annual consumption per head. 
Num- 
Area. ber of Straw B leet tick ota . 
farms.|Hay.| and | Oats. 1 ios Corn. hay au nas 
stover. y- Grass. | Wheat.| Stalk. | Night. oe > | Sa 
Tons.| Tons. |Bush.|Bush.|Bush.| Month.| Month.| Month.| Month.|Pounds.| Pounds. 
Southern. .... 26 | 1.52 0.06 | 39.8} 0.2) 10.1 2.0 Ae See 3.8] 3,160} 12,073 
Western. .... Sh || eS yy E200) Ue Sy SO Sad 2.6 3.6 0. 2 4.0] 3,140 1, 780 
Northern. .... 28 | 1.39 14 | 30.5 4] 34.5 1.3 .9 17 3.3 3, 060 2, 927 
Total. - 85 | 1.438 ~ 14 | 26.5 TAN) TiE6 2.0 2.9 a0 is 3,140 | 1 2,242 
1 In addition to grain shown an average of 3.9 bushels of kafir and milo per head was fed in the southern 
area, or 1.2 bushels for all farms. - 
COST OF HORSE LABOR. 
For the entire 85 farms the cost per hour of horse labor was 11 cents, 
compared with 17 cents on the 354 farms on which tractors were 
owned. In the southern area the cost per hour was 13 cents on the 
nontractor farms and 22 cents on the tractor farms; in the western 
area, 10 cents on the nontractor farms and 18 cents on the tractor 
farms; in the northern area, 12 cents on the nontractor farms and 
13 cents on the tractor farms. As stated on page 32 the annual cost 
of keeping a horse does not increase in proportion to the amount of 
work it does, and the high cost per hour of horse labor on the tractor 
farms was very largely due to the low utilization of the work stock 
compared with the utilization on the nontractor farms. 
ANNUAL COST OF POWER FOR DRAWBAR WORK. 
Since the work stock on the nontractor farms did all the drawbar 
work, the cost of keeping them represents the entire cost of power 
for drawbar work and is comparable to the combined cost of keeping 
the work stock and of using the tractors for drawbar work on the 
tractor farms. The average cost on the 85 nontractor farms was 
$701, or $2.10 per crop acre, compared with $1,025, or $2.91 per cro 
acre, on the 354 tractor farms. Disposal of the surplus work stoc 
would have reduced the cost somewhat on the tractor farms, and the 
average cost of power for drawbar work on the tractor farms in 1922 
and 1923, if no surplus work stock were kept and if tractors pur- 
chased at current prices were used, would have been only a few dol- 
lars per year higher than the average cost on the nontractor farms. 
The average cost per farm of keeping work stock on the nontractor 
farms was $838, or $3.35 per crop acre, in the southern area; $670, or 
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