﻿iul. 1137, U. S. Dept. of Agriculture. 



Plate II. 



V 



Plants of Winter Wheat Showing the Effects of Attacks of the Rosette 

 and the Hessian Fly, Respectively, Compared with Healthy Plants. 



.-J, Healthy plant in the spring; B and C, plants of the same age as A, showing early and 

 advanced stages, respectively, of the rosette; D, healthy plant as it appears in- the late 

 autumn ; I-J, plant of the same age as D, infested by the Hessian fly. Note the similarities 

 in color but the differences in the extent of tillering in plants affected by the two maladies 

 compared with the corresponding healthy plants. 



