Issued March 9, 1912. 



U. S. DEPARTMENT OE AGRICULTURE. 



BUREAU OF PLANT INDUSTRY— Circular No. 92. 

 B. T. GALLOWAY, Chief of Bureau. 



THE CONTROL OF COTTON WILT AND 



ROOT-KNOT. 



BY 



LIBRARY 

 rsEW YORK 

 BOTANICAL 



aARi>efH. 



W. A. ORTOX, Pathologist, 



AXD 



W. W. GILBERT, Assistant Pathologist, 

 Cotton and Truck Disease and Sugar-Plant Investigations. 



WASHINGTON ; GOVERNMENT PRIMTING OFFICE : 1912 



31117°— 12 



