UNITED STATES DEPARTMENT OF AGRICULTURE 

 BULLETIN No. 828 



Contribution from the Bureau of Plant Industry 

 WM. A. TAYLOR, Chief 



Washington, D. C. 



PROFESSIONAL PAPER 



May 10, 1920 



BACTERIAL WILT OF CUCURBITS 



By 



FREDERICK V. RAND, Assistant Pathologist, and ELLA 



M. A. ENLOWS, formerly Assistant Pathologist 



Laboratory of Plant Pathology 



CONTENTS 



Foreword 



Summer Transmission of Wilt .... 

 Winter Transmission of Wilt .... 

 Relation of the Wilt Bacteria to Cucum- 

 ber Beetles 



Page 



1 



2 



16 



21 



Page 



Virulence Tests 25 



Some Host Relations 31 



Distribution of Bacterial Wilt .... 34 



Control 36 



Summary 41 



WASHINGTON 

 GOVERNMENT PRINTING OFFICE 



1920 



