44 EXPERIMENT STATION. [Jan. 



CiiowN Gall. 



BY 0. E. STONE. 



The crown gall, which occurs on fruit trees and sonic other 

 l^lants, and which has been more common in other sections than 

 here, has been noted from time to time in this State. The last 

 two or three years much of the young stock in the college nurs- 

 ery has been infected, necessitating the destruction of quite a 

 large number of nursery trees. These trees were growing on 

 Doucin and Paradise stock and in some cases native stock has 

 shown infection. Much of the stock imported from other States 

 seemed to be infected with crown gall, and it is also known that 

 much of the EYiropcan stock is in a similar if not worse con- 

 dition. 



When peach stones have been planted directly in the soil, 

 and the stock budded upon the seedlings, infection has followed, 

 and this is also true of seedling apple stock, apparently indicat- 

 ing that some of our soils harbor the germs of this disease. 



Very little is known concerning remedies for this trouble; 

 neither is the full life history of the organism well understood, 

 but investigations of both are being made. 



