56 BULLETIN 997, U. S. DEPARTMENT OF AGRICULTURE. 



Table 44. — Cost of power on farms of different sizes. 



Size of farm (crop acres). 



Number 

 of farms. 



Cost of 

 keeping 

 horses. 



Cost of 



tractor for 



drawbar 



work. 



Total 

 cost of 

 power. 



Per cent 

 tractor 

 cost was 

 of total. 

 cost. 



Less than 80 



7 

 28 

 71 

 56 

 47 

 36 

 19 

 22 



§621 

 660 

 849 

 1,006 

 1,120 

 1,292 

 1, 367 

 1,966 



§172 

 279 

 279 

 331 



340 

 386 



452 

 576 



3793 

 939 

 1,128 

 1,337 

 1,460 

 1,678 

 1,819 

 2,542 



21.7 



80toll9 



29.7 



120 to 159 



24.7 



160 to 199 



24.8 



200 to 239 



23.3 



240 to 279 



23.0 



280to319 



24.8 





22.6 







ALL 



286 



1,076 



341 



1,417 



24.1 







CHANGES IN SIZE OF FARM AND NUMBER OF WORKSTOCK AFTER 

 PURCHASE OF TRACTORS. 



The average size of farm and the number of workstock in the 

 different areas both before the purchase of tractors and at the time 

 of the investigation, are shown in Table 45. For all farms, there 

 was an increase of about 20 acres after the tractors were purchased, 

 and during the same time a decrease of 1.8 head of workstock. The 

 number of acres (total acres in farm) per horse increased from 27.6 

 to 37.9, or about 37 per cent. Where there was a change in the 

 size of the farm the number of crop acres in the farm before the 

 purchase of the tractor was not obtained; consequently figures 

 showing the average number of crop acres per horse for all farms 

 before the purchase of tractors are not available. 



Table 45. — Size of farm and number of workstock before and after purchase of tractors in 



different areas. 





At time of investigation. 



Before purchase of tractor. 



Area. 



Size of 

 farm. 



Work- 

 stock. 



Total 



acres per 



horse. 



Crop 



acres per 



horse. 



Size of 

 farm. 



Work- 

 stock. 



Total 



acres per 



horse. 





Acres. 

 363.0 

 202. 

 218.1 

 269.5 

 247.3 

 256.0 



Number. 

 8.1 

 5.0 

 5.4 

 6.0 

 8.4 

 7.0 



Acres. 

 44.8 

 40.4 

 40.4 

 44.9 

 29.4 

 36.6 



Crop acres 

 34.1 

 28.0 

 32.6 

 34.1 

 24.7 

 28.3 



Acres. 

 317.1 

 182.0 

 199.4 

 251.8 

 240.4 

 235.6 



Number. 

 9.2 

 6.1 

 7.9 



8.7 

 9.4 

 9.2 



Acres. 

 34.5 





29.8 





25.6 



Montgomery County, Ind 



28.9 

 25.6 





25.6 







All 



257.6 



6.8 



37.9 



29.6 



237.5 



8.6 



27.6 







The greatest increase in size of farm was in Madison County, Ohio, 

 and the least in Livingston County, 111. The greatest increase in 

 acres per horse was in Montgomery County, Ind., and the least in 

 Livingston County, 111. 



Nine of the 286 men started farming with tractors, 81 increased 

 the size of their farms after purchasing tractors, 24 decreased the 



