UNITED STATES DEPARTMENT OP AGRICULTURE 
BULLETIN No. 268 
Contribution from the Bureau of Plant Industry 
WM. A. TAYLOR, Chief 
Washington, D. C. 
July 20, 1915. 
CROP PRODUCTION IN THE GREAT 
PLAINS AREA 
RELATION OF CULTURAL METHODS TO YIELDS 
By 
E. C. CHILCOTT, Agriculturist in Charge, and J. S. COLE 
and W. W. BURR, Assistants, Office of 
Dry-Land Agriculture 
CONTENTS 
Introduction 1 
Climatic Features of the Great Plains . . 3 
Soils of the Great Plains 5 
Crops and Cultural Methods 5 
Results of Methods Tested with Various 
Crops 5 
Page 
Tillage Practices 21 
Accessory Tillage 24 
Regional Adaptation of Crops ..... 26 
Conclusions ....27 
WASHINGTON 
GOVERNMENT PRINTING OFFICE 
1915 
