290 Diseases of Economic Plants 



Selby, in Ohio. In 1914, Pammel, in Iowa, called attention 

 to a serious root-rot of corn caused by a Fusarium. The 

 disease is now known to prevail generally throughout the 

 corn belt both in the South and the North. Though no ac- 



FiG. 153. — Rotten stalk and the nubbin re- 

 sulting. After Hoffer. 



curate estimate has been made of the amount of damage, it 

 is known that the loss is large. 



Among the symptoms are: 1. Poor stands due to missing 

 hills, caused by defective germination. 2. Weak and stunted 

 seedlings, many of which may eventually die. Stunted 



