326 Bulletin 263. 



region there are specimens from Branchport, Penn Yan, Catawba, Bluff 

 Point, North Crosby, Keuka Park, and others. No specimens have ever 

 been received from the Hudson River district, but Professor F. C. Stewart 

 ('99) states that he has seen it there, and reports it in Bulletin 167 of 

 the Geneva Station. 



LOSSES FROM THE DISEASE 



It is not possible to give an estimate of the loss caused by this disease 

 in New York vineyards. This is due to many reasons : Losses due to 

 this source are usually attributed to other causes; unfamiliarity with 

 the disease as such makes all estimates too low; in the old vineyards, 

 where the progress is slow, many vines are so slowly devitalized as to 

 escape notice entirely ; in well-kept vineyards, dead vines are replaced 

 immediately, thus leaving no opportunity for observation as to losses. 



In a few instances the writer has had opportunity to observe the 

 ravages of the disease. In a young vineyard of 14 acres, three years 

 up, careful observations were made in August, 1907, and at a fair 

 estimate 4,000 to 5,000 vines were dead or dying. In another vineyard 

 of 20 acres, the owner thinks at least one-third of the vines are dead, 

 and from personal observation the writer thinks this a fair estimate. 

 In 10 acres of Moore's Early at Romulus, N. Y., where little attention 

 has been given to renewing, at least 10 per cent, of the vines are dead 

 or show symptoms of the disease. Nearly half the vines in a Niagara 

 vineyard of 28 acres at Hemlock have the fungus in them and a few of 

 them have failed to set fruit this year, while others are dead or in a 

 dying condition. In some vineyards or in certain parts of others only 

 an occasional vine shows any signs of the disease. 



SIGNS OR SYMPTOMS OF THE DISEASE 



There are many signs by which the disease may be recognized in 

 the field : 



(a). A trimmed and tied vine that has failed to put out shoots (Fig. 

 41). Such a vine usually splits open longitudinally during hot weather. 



(b). A vine that has sent forth shoots, the latter dying after a few 

 weeks (Fig. 42). 



(c). Vines on which all or part of the shoots and leaves exhibit a 

 dwarfing; internodes short and leaves very small and often crimped 

 about the margin (Fig. 57). This symptom is observable from a 

 distance. 



('99) Stewart, F. C. & Blodgett, F. H. A Fruit Disease Survey of the Hudson 

 Valley in 1899. N. Y. Agr. Exp. Sta. Bull. 167:297-299, 1899. 



