13 



Table 4. - Selected horse-and tractor-drawn machines: Use on farms. 



United States, 1941 and 1956 1/ 



Implement 



Average annual 

 use per machine 



1941 2/ • 1956 



Corn-cotton planter 3^/: 

 Tractor-drawn 4/--. 



Horse-drawn 



Total 



Mower: 



Tractor-drawn- 



Hor s e -drawn — 



Total 



Grain drill: 



Tractor -drawn - 



Horse-drawn — 



Total 



Thous. Thous. 



Acres 



Acres 



204 



1, 511 



161 



70 



3,451 



689 



36 



16 



3,655 



2, 200 



43 



53 



314 



2,145 



154 



75 



2, 565 



355 



54 



16 



2,879 



2,500 



65 



67 



422 



1,416 



201 



87 



1, 290 



84 



44 



14 



1,712 



1, 500 



83 



83 



1 / It was assumed that machines on tractor f arm.s were drawn exclusively 

 by tractors, that machines on nontractor farms were drawn exclusively by 

 horses or mules. 



£/ From Work Performed with Principal Farm Machines, by A. P. 

 Brodell and J. W. Birkhead, U. S. Bur. Agr. Econ. FM 42, May 1943. 



3^/ The 1941 total includes lister planters. These were not included in 1956. 



4/ The data for 1941 are available only for 2-, 3-, and 4-row tractor 

 planters. 



