UNITED STATES DEPARTMENT OF AGRICULTURE 
DEPARTMENT BULLETIN No. 1175 
Washington, D. C. 
September, 1923 
GRAIN-SORGHUM EXPERIMENTS AT THE WOODWARD 
FIELD STATION IN OKLAHOMA 
JOHN B. SIEGUNGER, Assistant Agronomist, Office of Cereal Investigations 
Bureau of Plant Industry 
Objects of the Experiments 
Description of the Woodward Field Station 
Location 
Soil 
Climatic Conditions 
Classification of the Grain Sorghums . . 
CONTENTS 
Page 
Experimental Methods 14 
Sue and Arrangement of Plats .... 14 
Crop Rotation 14 
Method of Seeding 14 
Methods of Obtaining Data 14 
Environing Conditions 15 
Varietal Experiments 16 
The Mslo-Durra Group 17 
The Kafir Group 23 
The Kaoliang Group 30 
The ShaOn Group 33 
Page 
Varietal Experiments — Continued 
Miscellaneous Sorghums ...... 33 
Compaiatire Yields of the Grain Sorghums . 35 
Date-of-Seeding Experiments 36 
Dwarf Yellow Milo 39 
Sunrise Kafir . . 44 
Dawn Kafir 46 
Reed Kafir 47 
Feterita 48 
Blackhull Kaoliang 49 
Comparative Yields in Date-of-Seeding 
Experiments . ........ 49 
Spacing Experiments 52 
Dwarf Yellow Milo 53 
Sunrise Kafir 59 
Summary 64 
WASHINGTON 
GOVERNMENT PRINTING OFFICE 
1923 
