56 



ILLINOIS NATURAL HISTORY SURVEY CIRCULAR 46 



Fig. 52. — Leaf blight of hawthorn is conspicuous as angular, reddish- 

 brown diseased areas with irregular margins on the upper surfaces of leaves. 



cycloheximide or dodine (Table 1). One application of cyclohexi- 

 mide in mid-June or two or three applications of dodine at 2- 

 week intervals, with the first application in mid-June, will con- 

 trol leaf blight. 



JUNIPER 



Several species of juniper, especially red cedar, are affected 

 by rust diseases, including cedar-apple rust, cedar-hawthorn 

 rust, and cedar-quince rust. 



