124 PRACTICAL CORN CULTURE 
Again, the vitality of the seed will be weakened if sub- 
jected to either repeated freezing or high temperatures. Corn 
will germinate between the wide variation of from forty-eight 
to one hundred and fifteen degrees. It will make the most 
MODERN SEED CORN TESTER 
rapid growth, however, at ninety-three degrees. Since it will 
make a more hardy growth at about eighty degrees, this is 
perhaps the best temperature for germination. 
Moisture is just as essential as proper temperature. Water 
softens the seed covering, dissolves the plant food and carries 
