292 



Vineyard Culture. 



fatal to the plant, is also due to the bad state of the 

 roots. 



Blight. — This affection presents the following char- 

 acteristics : the leaves, the young shoots, and even the 

 berries, assume a greyish tint, owing to the cuticle of 

 these parts splitting, and drying up. The growth is 

 completely arrested, and the berries split instead of rip- 

 ening. Vine-dressers refer this alteration either to the 

 cold rains of summer, following warm weather, or to a 

 too abundant crop the year preceding. This disease is 

 made to disappear by fully manuring the plants affected, 

 and making them barren for one year. 



Oiidium, or White Leprosy. — Of all the diseases at- 

 tacking the vine this is certainly the most to be feared. 



[Fig. wS-l—Vine At- [Fig. \\b:\— Fruit At- 

 tacked by Leprosy. tacked by Leprosy. 

 This affection presents itself under the form of an ef- 

 florescence of a greyish white, first on the leaves 



