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MASS. EXPERIMENT STATION BULLETIN 317 



are enough on a shoot because each bud produces a cluster of eight or ten berries 

 and if more buds are left, so many berries will develop that they will be small. 

 Some varieties, such as Cabot, grow many fruit buds in proportion to the 

 number of leaf buds and must be cut back one-half to two-thirds of their length. 

 In Fig. 5 the three shoots on the right illustrate such a condition. Other 

 varieties, such as Rubel, produce relatively few fruit buds in proportion to the 

 number of leaf buds and need little or no cutting back. This condition is illus- 

 trated by the three shoots on the left in Fig. 5. 



Finally, study the plants to learn their needs. Cut heavily to encourage new 

 growth. If you are pruning for the first time, get expert advice if possible. 





Figure 3. Rubel — Before Pruning. 

 (a) Terminal shoots with fruit buds; (b) old branch to be cut out. 



