PLATE i 
Healthy and diseased Harvest Queen wheat plants of same age. 
A. —Healthy plant showing good development and normal green color. 
B. —Plant showing early symptoms of rosette disease, namely, marked dwarfing, 
excessive tillering, blue-green color, and some leaf mottling before Helmintho- 
sporium invasion has started. 
C. —Plant attacked by rosette disease, showing symptoms after Helminthosporium 
rot has developed. General symptoms similar to those in B, but with marked 
rotting and discoloration of basal portion. 
