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MANUAL OF MODERN VITICULTURE. 



t Of the other stock tested, including Lenoir, it is plain, 

 with the possible exception of Munson, that they are 

 unadapted to this method of grafting. This is to a great 

 extent due to the difficulty of making roots with many of 

 these varieties, and their consequent failure to properly feed 

 fche scion. The Munson not only gave a high percentage 

 of first-class grafts, but the unions were particularly good. 

 As this variety's resistance to phylloxera has not been 

 thoroughly tested, however, this success in grafting must not 

 be construed as a proof of its utility as a resistant stock. 



The effect, of failing to cut the raffia or other binding 

 material early enough in the season is well shown by the 

 middle graft of Fig. 180. The graft, as can be seen, had 



Fig. 180. Effect of Black-Knot and of failure to cut the Raffia. 



made a perfect union, but the raffia had been imperfectly 

 removed, one or two turns having been left uncut. This is of 

 course an unusual case, as when the raffia is cut in one place 

 it is usually loosened completely. The same thing occurs, 

 however, when the raffia is not cut at all except that the 

 constricted part is longer, as is the case with the two 

 outer vines. The swelling of the vine above the constriction 

 is due to the difficulty which the food, elaborated by the 



