i88 



PLANT PROPAGATION 



Spy and Tolman resulted in such peculiar changes in twig color 

 some becoming red, some purple,- etc. that they could not be used 

 with safety for further cion wood until they had proved their 

 identity by coming into bearing. 



These and similar facts indicate that many common variations 

 in size and vigor so frequently shown by the same variety of tree, 



WHOLE ROOT 

 GRAFTS 



FIG. 159 STAGES IN GRAFTED APPLE TREE PRODUCTION 



Notice that the finished trees are "whips." These are what commercial 

 planters are largely preferring to two year trees because they allow the head to 

 be formed at any height and they grow better than the older trees. 



