r 



THE PETUN"IA BLIGHT 125 



The Petunia Blijjht 



Ascochyta petunice 



Petunia leaves are sometimes affected by a blight, 

 which is likely to begin near the center and to spread in 

 all directions. Sometimes rings are produced on the 

 injured tissues. Like other fungi, this species repro- 

 duces by means of spores, which are developed in great 

 numbers. The early application of fungicides is sug- 

 gested as a preventive. 



There are many other fungous diseases of flowers 

 and foliage plants, but the limits of the present work 

 prevent their discussion here. Illustrated accounts of 

 many of them have been published by Dr. Halstead and 

 others in The American Florist, Garden and Forest, 

 The American Agriculturist, and other journals. 



