Cop*$ 
UNITED STATES DEPARTMENT OF AGRICULTURE 
In Cooperation with the 
Idaho, Iowa, Kansas, Missouri, and Washington 
Agricultural Experiment Stations and the Brooklyn Botanic Garden 
DEPARTMENT BULLETIN No. 1275 
Washington, D. C. 
April, 1925 
VARIETAL SUSCEPTIBILITY OF OATS TO 
LOOSE AND COVERED SMUTS 
; 
By 
GEORGE M. REED, Curator of Plant Pathology, Brooklyn Botanic Garden, formerly Pathologist 
in Charge of Cereal-Smut Investigations, and MARION A. GRIFFITHS and 
FRED N. BRIGGS, Assistant Pathologists, Office of 
Cereal Investigations, Bureau of Plant Industry 
CONTENTS 
Page 
Introduction 1 
Review of Literature 1 
Characteristics of the Oat Smuts S 
Field Experiments 6 
Greenhouse Experiments . . . 34 
Summary 36 
Literature Cited 38 
WASHINGTON 
GOVERNMENT PRINTING OFFICE 
1925 
