UNITED STATES DEPARTMENT 
DEPARTMENT BULLETIN ^ 
Washington, D. C. 
FIELD EXPERIMENTS WITH ATMOSPHERIC-NITROGEN 
FERTILIZERS 
By 
F. E. ALLISON and J. M. BRAHAM, of the Fixed-Nitrogen Research 
Laboratory, and J. E. McMURTREY, Jr., of the Bureau of Plant Industry 
CONTENTS 
Introduction 1 
Fertilizers Used 2 
Soils and Crops 5 
Methods Used in Experiments 5 
WASHINGTON 
GOVERNMENT PRINTING OFFICE 
1924 
Observations During Growth 
Experimental Results 
Review of the Results 
Summary 
