PKUNEfTG GKAPE VmES. 



137 



The various systems of vine pruning whicli have 

 been founded upon these general principles, may be 

 classified according to the part of the vine from which 

 the fruit buds are produced. Thus, if we suppose a 



Fig. 20. 



to be a shoot of last year ; b a spur two years old, and 

 o a branch three years old, then we may by judicious 

 pruning obtain fruit, first from the plump buds a a 

 on the young cane a ; secondly from the buds h c 

 near its base ; thirdly from the buds e which will be 

 found at its junction with the spur b; and fourthly 

 from buds situated at f, that is at the junction of the 

 spur B with the branch c. In the latter case, how- 

 ever, if the spur n is old and has borne several shoots 

 like A it will require some skill and very favorablo 



