Freezing Injury of Seed Corn 
65 
DEGREES OF MATURITY SELECTED FROM FIELD AT DIFFERENT 
DATES IN FALL AND WINTER OF 1917 
Five 10-ear samples of corn differing in maturity and 
moisture content were selected from a field of Hogue’s Yellow 
Dent corn on October 8, 1917, following the first, but severe, 
freezing spell of the season. As nearly corresponding samples 
as possible were selected at four succeeding elates, namely on 
November 19, December 11, December 29, and January 15, for 
the purpose of observing the effects of additional degrees of 
freezing under natural field conditions. The field was neither 
the ripest nor the greenest at the Station, but was of medium 
maturity, and represented about an average condition for 
eastern Nebraska that season. The five selected samples of this 
seed ranged from mature seed down to the late dough stage 
of maturity. 
Two additional samples were selected from other fields at 
each of the above dates and tested together with the above 
five samples. One was mature seed selected from a field of 
Hogue’s Yellow Dent corn which had been cut and shocked 
late in September. The other was very immature seed selected 
in the milk stage from a field of late planting. 
A description of the seven samples together with their 
moisture content and germination are given in Tables 28 and 29. 
