Family Umbelliferae 355 



DISEASES OF THE CELERY {Apium graveolens) 



Soft Rot, see Cabbage, p. 192. 



Rust 



Caused by Puccinia bullata (Pars.) Schr. 



This rust resembles the rust of asparagus. The 

 disease is unimportant, and is seldom met with in 

 the United States. 



Leaf Spot 



Caused by Phyllosticta apii Hals. 



Leaf spot is a disease of minor importance. The 

 trouble is characterized by dull brown patches on any 

 part of the leaf. Spraying for late blight wiU also 

 control leaf spot. 



Late Blight 



Caused by Septoria petroselini Desm. var. apii 

 Br. and Cav. 



Late blight is perhaps one of the worst diseases of 

 celery. It may be found wherever celery is grown. 

 In California, the greatest money losses to this crop 

 are attributed to late blight. 



Symptoms. The disease first attacks the lower 



