UNITED STATES DEPARTMENT OF AGRICULTURE 

 BULLETIN No. 871 



Contribution from the Bureau of Plant Industry 

 WM. A. TAYLOR, Chief 



Washington, D. C. 



PROFESSIONAL PAPER 



November 10, 1920 



THE DRY-ROT OF INCENSE CEDAR 



By 



J. S. BOYCE, Assistant Pathologist 

 Office of Investigations in Forest Pathology 



CONTENTS 



Importance of Incense Cedar 

 Total-Loss Factors .... 

 Method of Collecting Data . 



Secondary Rots 



The Dry-Rot 



Page 



Application of Results 49 



Relative Importance of Dry-Rot . . 49 



Control of Dry-Rot 49 



Summary 55 



Literature Cited 57 



WASHINGTON 

 GOVERNMENT PRINTING OFFICE 



1920 



