40 



we expect to control by sterilization any fungus, which is freely 

 propagated by spores. There are probably cultural methods that 

 can be applied in the greenhouse which will alleviate the troubles 

 caused by Fusarium, and experiments are now being conducted 

 by us with that end in view. Undoubtedly, starting the plants in 

 uninfested soil and cultivating on new land where Fusarium is 

 likely to be less common will aid to overcome the rot to a large 

 extent. 



Among other diseases of the carnation which are more or less 

 common is the Stigmonose^ or Bacteriosis, as it has been oalled, 

 which is believed to be due to insect stings, causing a small 

 purplish spot on the leaves. There are also the Anthracnose, 

 fairy ring, leaf spot, etc., which are more or less prevalent. 



Violets. 

 Leaf Spot {Alternaria Vioke, Dorsett). 

 More than one fungus was formerly believed to be the cause 

 of the violet leaf spot (see Fig. 11.) More recent investigations, 





3# 



Fig. 11. — Violet leaf spot. 



however, would seem to indicate that most of these spots are 

 caused by the above-named fungus. The application of fungicides 

 have proven of little or no value as preventives, and the best 

 authorities recommend strict adherence to the most careful cul- 

 tural conditions, together with the selection of the strongest and 

 healthiest plants for crop purposes. 



Eel Wonns. 

 These are very troublesome to violets because of minute galls 

 on the roots, which are readily overlooked, and the same method 

 of extermination holds here as elsewhere (see "Tomatoes"). 

 Care must be taken, however, not to start the plants in soil in- 

 fested with eel worms. 



