PRUNIKG UF ri.ANTS. 



28.] 



KIG. 97 — ^OK\V■AY MAPLE 



(Acit'i- platanoides' . 



Horticultural Grounds, Jlissouri Experiment Station. 



the early years of its development this food supply 

 should be directed to the upbuilding of a strong, 

 vigorous tree; but when the tree is mature, if 

 one system of reproduction predominates over 

 the other, it uses more than its share of this 

 available food and the other system is deprived 

 of its rightful portion, and thus its development 

 is checked. 



Man may, by pruning or other means, equal- 

 ize the distribution of food. If veo-etative 



