PHYSIOLOGY OF COBN PLANT 



41 



Composition of Corn Plants 



Green plants, six 

 weeks old 



Green plants, ears 

 just glazed 



Mature plants 



Water 

 90% 



Water 

 80% 



Water 

 60% 



Composition of Dry Matter. Percentage Basis 



Green plants 

 six weeks old 



Green plants 

 ears just glazed 



Mature plants 



Fig. 16. — Composition of corn plants at three stages of growth. The 

 upper figure shows a progressive increase in percentage of dry matter 

 as the plant approaches maturity. The lower figure shows the pro- 

 gressive change in character of dry matter. 



