272 Journal of the Department of Agriculture. 



The leaders should he shnitened to about half of the previous 

 season's growth. This stimulates the tree roots and assists in distri- 

 Initin"!' the sap evenly throup-jiout the tree. It is an accepted rule 



Fig. 11. — Laterals found on Apple "Jonathan," showing treatment. 



that when growth is sluggish hard cutting back of leaders calls the 

 roots mto activity. When growth is vigorous long pruning tends to 



