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disease. Sometliiu^ can be done towards controlliu"' it by 

 traiuiui^ the vines so that the fruit will liaug in the shade of 

 the leaves, for such sheltered fruit is less often diseased 

 than that hauoing exposed to the sun and dew. On this 

 account some form of horizontal trellis is much to be pre- 

 ferred to the ordinary vertical trellis or to training to stakes. 



Root Eot. — This disease can be detected by the presence 

 of a white mould-like growth under the bark on the roots 

 and crown. It is quite prevalent at the South often doing 

 serious harm. A recent examination of the Station vine- 

 yard shows that out of 584^ vines all but 8i:» show evident 

 signs of this disease and many died during the late summer 

 and fall. It seems evident that this is the cause of the 

 death of so many of the vines on the station grounds as 

 reported in previous bulletins. This disease has been 

 little studied in this country and no remedy for it can be 

 proposed at present. It seems to be identical with the 

 disease known asjMitrridie in France. This has been shown 

 to be caused by the growth of any one of three or more 

 different fungi and is usually fatal in from two to three 

 years. 



Here some varieties are evidently much more resistant 

 that others and some facts go to show that vines may live 

 many years while more or less affected by it. The character 

 of the soil probably has much to do with the prevalence 

 of the disease. 



-;:- " * 



Correspondence regarding the appearance and extent of 

 any diseases of plants cultivated in the State of Alabama 

 is requested by this Experiment Station. When writing- 

 regarding plant diseases accompany the correspondence 

 with specimens of the affected plants or portions of plants- 

 It is desirable also to give as full data as possible regarding 

 the nature and extent of the disease. Address all corres- 

 pondence on this head to The Biological Department, Ala- 

 bama Experiment Station, Auburn, Alabama. 



