132 THE AFTEE TREATMENT OF NUESERY STOCK 



Heading Back. This is a process of cutting off the 

 tips of the young trees, in order to force more lateral 

 branches and develop a more stocky trunk. Such fruits 

 as peaches, apricots and cherries may grow so late into the 

 fall that winter injury may result. The heading back 

 checks this, besides giving a uniform height to all the 



FIG, 61. Cultivating Seventy Acres a Day by Gasoline Power. 



trees. The pome fruits are not usually given this treat- 

 ment. The operation is performed with an ordinary pruning 

 shears. The operator walks along the row clipping the 

 tops almost as fast as he can walk. 



Trimming Up. Practically all nursery trees have the 

 lower branches removed to a height of sixteen or eighteen 

 inches when sold. This makes a neater looking tree and 

 one that is easier to handle in shipping. The lower branches 



