UNITED STATES DEPARTMENT OF AGRICULTURE 
BULLETIN No. 654 
OFFICE OF THE SECRETARY 
Contribution from the Office of Farm Management 
W. J. SPILLMAN, Chief 
Washington, D. C. 
June 14, 1918 
FARM ORGANIZATION 
IN THE IRRIGATED VALLEYS OF 
SOUTHERN ARIZONA 
By 
R. W. CLOTHIER, Agriculturist 
CONTENTS 
Page 
Object of Investigations . . . . .. . . . . . 1 
Summary of Results 1 
General Description of Localities 4 
Method of Investigation 15 
Standards Used in this Bulletin for Measuring Success . . .17 
Types of Farming 21 
The Adaptation of the Farm Enterprises to the Size of the Farm . 42 
The Relation of Capital Invested and Size of Farm to Farm Income 
and Labor Income 47 
WASHINGTON 
GOVERNMENT PRINTING OFFICE 
1918 
