. Bulletin of the Department of Agriculture. Agriculture; Agriculture. UNITED STATES DEPARTMENT OF AGRICULTURE BULLETIN No. 997 Joint contribution from the Office of Farm Management and Farm Economics, H. C. TAYLOR, Chief; Bureau of Public Roads, THOS. H. MacDONALD, Chief; and Bureau of Animal Industry, JOHN R. MOHLER, Chief Washington, D. C. December 21,1921 THE COST AND UTILIZATION OF POWER ON FARMS WHERE TRACTORS ARE OWNED 286 FARMS—OHIO, INDIANA, ILLINOIS—1920 « By H. R. TOLLEY, Agricultural Engineer, and L. A. REYNOLDSON, Junior Farm Economist CONTENTS Page Introduction • 1 Summary 2
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. UNITED STATES DEPARTMENT OF AGRICULTURE BULLETIN No. 997 Joint contribution from the Office of Farm Management and Farm Economics, H. C. TAYLOR, Chief; Bureau of Public Roads, THOS. H. MacDONALD, Chief; and Bureau of Animal Industry, JOHN R. MOHLER, Chief Washington, D. C. December 21,1921 THE COST AND UTILIZATION OF POWER ON FARMS WHERE TRACTORS ARE OWNED 286 FARMS—OHIO, INDIANA, ILLINOIS—1920 « By H. R. TOLLEY, Agricultural Engineer, and L. A. REYNOLDSON, Junior Farm Economist CONTENTS Page Introduction • 1 Summary 2 Areas in Which Investigation Was Made . 5 Size and Age of Tractors 9 Workstock ..»...' 10 Size of Farm 11 Work Done by Tractors 13 Work Done by Horses . .... . • 26 Horse Labor Equivalent of Tractor Work . 34 Proportion of Work Done by Horses and by Tractors 35 Number of Workstock Used on Different Operations 37 Cost of Keeping Workstock 39 Cost of Using Tractors 45 Reliability of Tractors 53 Cost of Power as Furnished by Horses and by Tractors 54 Annual Cost of Drawbar Work .... 54 Changes in Size of Farm and Number of Workstock 56 Increase in Investment Due to Purchase of Tractors 59 Saving of Man Labor Due to Use of Tractors 60. WASHINGTON GOVERNMENT PRINTING OFFICE 1921. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Dept. of Agriculture. [Washington, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O.
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