VINE FRUITS 



183 



and large-sized berry, do not allow too many buds to develop and 

 thin out the clusters of grapes. Prune early in the spring before 



Fig. 04. — Unpruned grapevine trained by the six-arm renewal 

 system. 



the sap flows. Figures 93 to 98 will give some idea of pruning 



and systems of training. 

 Bulletin No. 471, United 

 States Department of 

 Agriculture, Washing- 

 ton, D. C. 



The grapes are some- 

 times inclosed in two- 

 pound manila paper 

 sacks to protect the ber- 

 ries from mechanical 

 injury, birds, insects, 

 and early frosts. Small 

 holes should be made at 

 the bottom of the bag 

 to allow drainage of wa- 

 ter that might enter. 

 The top is folded over 

 and pinned. 



The grape is easily 

 propagated by cuttings 



For further information, see Farmer 's 



n.5. — Pruned grapevine trained by the six-arm 

 renewal system. 



