PRUNING YOUNG TREES 



187 



elevation, and climate are factors which have a very close 

 relation to pruning. Likewise, the variety question is al- 

 ways to l)e taken into consideration. F(jr example, the 

 pruning of the Jonathan in southern Idaho, at an altitude 

 of 2,000 feet, on a silt loam, is a different problem from 

 that of pruning Yellow Ncv.'tfjwn in western Oregon on 



FIG. I46^MAIN BRANCHES BARREN BECAUSE OF NEGLECT 



This old Italian Prune tree iias not been pruned for years. The frame and 

 lower branches have become barren through the dying of the fruit spurs which 

 were too much shaded by the thictc, bushy top. This top consists largely of long, 

 slender, weak fruit spurs and fruitmg branches like those in Fig. 168. 



