THE CORN CROP IN THE UNITED STATES. 117 



Composition of Dry and Green Corn Compared. 



The composition of the dry and green corn according to the 

 U. S. Department of Agriculture is as follows : 



100. 100. 



Corn may be termed dry corn when the moisture content 

 does not exceed 12 per cent. 



The commercial value of corn is coming to be largely deter- 

 mined by the amount of moisture that it contains. 



The Moisture Content of Corn. 



According to a report of the New York Experiment Station,, 

 the following is given as the weight of corn at different stages of 

 growth : 



YIELD PER ACRE IN TONS. 



Dry 



Corn. Water. Matter. 



1st stage, fully tasseled 9.0 8.2 0.8 



2nd stage, fully silked 12.9 11.3 1.6 



3rd stage, kernels mixed stage 16.3 14.0 2.3 



4th stage, kernels glazed 16.1 12.5 3.6 



5th stage, ripe 14.2 10.2 4.0 



1. What per cent, of corn is water when in the third stage? In the 

 fourth stage? 



What per cent, of the corn is dry matter in the first stage? In the 

 fifth stage? 



3. What is the difference between the weight of the corn on an 

 acre, in the first stage and the third stage? Between the third and fifth 

 stages? 



4. Which stage is in the best condition to cut for the silo? 



