20 



The trouble has occasionally been observed in this State on 

 greenhouse tomatoes. 



For field crops spraying has been recommended. In the 

 greenhouse the remedy is more simple, since the disease, accord- 

 ing to our observation, results from too much crowding, and is 

 of rare occurrence here. 



A similar spot is often found on chrysanthemums. On both 

 tomatoes and chrysanthemums the disease is confined to the lower 

 shaded leaves of closely planted crops, and it has never been 

 observed by us on individual plants of chrysanthemums grown 

 in pots or where light and air have access to the foliage. In 

 the fall and winter, when the light is poor, the lower leaves of 

 crowded plants often deteriorate and show signs of prematurity; 

 consequently becoming more susceptible to disease. 



To prevent this trouble the crop should not be planted too 

 closely, and the foliage should receive more air and sunlight. 

 On too closely planted tomato plants the lower leaves may l)e 

 removed, and if diseased, destroyed. The pruning of the lower 

 leaves is not harmful and lets in more light and air where it is 

 needed, 



LEAF BLIGHT 



(Septoria, sp.) 



Leaf blight ( Septoria ) is frequently seen on field crops of 

 tomatoes, but we have not noticed it on crops grown under glass. 





'WJ -1. ». 





Fig. 7, showing leaf sjjot (Septoria) 

 on tomato leaf. 



