8o 



CELERY CULTURE 



Another form of leaf blight, and which is com- 

 monly confused with the ordinary blight, is caused 

 by the fungus known as Septoria petroselini 1 var. 



FIG. 32 CELERY LEAF AFFECTED WITH A BLIGHT 



(Septoria pctroselini var. />//) 

 (Redrawn from Halsted) 



apii. In general appearance this disease is very sim- 

 ilar to the ordinary blight, and the treatment is the 

 same in either case. 



Leaf Spot. This disease, while similar to the 

 blight in its action, is somewhat different in general 



*N. Y. Expr. Sta. Bui. No. 51. 



