48 BULLETIN 1202, U. S. DEPARTMENT OF AGRICULTURE. 
TaBLe 54.—Changes in annual cost of power and labor due to using tractors in 1921, 
1922, and 1923. 
1921 1922 | 1923 
Cost per farm of power for drawbar work: 
TACCON, 5 20.55 oo nk oe oe Soe ae ee ee Oe OE Re eee ee ees Sint $364 $352 
Work stock.2 22h. $f. 5 0 ee en Ce ee eee see 541 415 450 
| rn Aime eerste i MR aed En Ro BOAT pee 1,025 779 802 
Costiof power with: horses only-032 5s ase ena aes coe eee ae ne 586 634 
Increase in cost of power due to usiug tractors....................-.- 276 193 | 168 
Saving in family and regular hired labor (at $50 per month)............... 70 70 70 
Net increase in cost of power and labor due to using tractor........- 206 | 123 | 98 
INCREASE IN INVESTMENT DUE TO PURCHASE OF TRACTOR. 
In Table 55 is summarized for each area the average increase 
in investment due to the purchase of the tractors. In each area 
this increase had amounted to between $1,300 and $1,400. The cost 
of the tractors is shown on page 33. The value of the work stock 
displaced was obtained by crediting the actual reduction in work 
stock as shown in Table 49 at the average value of all work stock as 
shown in Table 8. 
A record of the number and value of implements for drawbar 
work which each owner purchased for use with his tractor and the 
number and value of horse-drawn implements which he had sold was 
obtained. The averages are shown in Table 55. Practically every 
man had purchased some special tractor implements but only 23, 
about 7 per cent of the entire number, had disposed of any of their 
old horse-drawn implements. 
TaBLE 55.—Increase in investment due to purchase of tractor. 
Southern] Western Northern 
All 
Item. area. area. | area. | farms. 
MON OUUPACUOD. os 205 See 2 cs ees he ee eee ae $1, 423 $1, 524 $1, 327 $1, 419 
Cost offield implements for tractor:-...s..5-1--.2----2 22... 222 265 278 255 
a ee Sey OL a Oe Wits. (5 eee 1,645 1,789| 1,605] 1,674 
Wialueof work stock displaced: ..¢.a/2.2 SATIN. 2 eae Palate: 260 460 242 340 
Value of horse-drawn implements sold.............-...--------- 3 4 2 3 
abet oc. dtork ban dae ae oe ee eee 263 464 244 | 343 
INeciIMncreasoin investment..\\.. 24. =~ aes gee ne oe ee eee 1, 382 1,325 1,361 1, 331 
FARMS ON WHICH NO CHANGES WERE MADE AFTER PURCHASE OF TRACTORS. 
As shown in Table 51, only 65 of the 191 men who had not changed 
the size of their farms had reduced the amount of labor used. It was 
_ found also that only 89 of these 191 had reduced the number of work 
stock kept. Ninety-one were still keeping the same number of work 
stock, and 11 were keeping more than before the tractors were pur- 
chased. Seventy-three of these 102 who were keeping the same or 
greater number of work stock on the same acreage had not reduced 
the amount of family or regular hired labor used. Ten of the 73 were 
using more labor than formerly. Some of these farms where there 
