612 



IOWA ACADEMY OF SCIENCE 



A. Solution — one pint formalin to three gallons of water. 



1. While the germination tests do not seem to be con- 



sistent there is a gradual decrease in vitality as 

 the amount used is increased from one pint to eight 

 pints, and as the time of covering increases from 

 none to twelve hours. 



2. One pint per bushel may be used with comparative 



safety. 



3. Two pints apparently affects the vitality. Larger 



amounts seem to have a decided affect upon the 

 germination and should not be used. 



4. Field tests showed that all the oats receiving 4, 6, 



and 8 pints per bushel were killed, except the first 

 two of the 4-pint treatment. The zero and 1-hour 

 covered seed evidently recovered from the effect of 

 the treatment. 



GERMINATION TEST OF OATS. 



Table XIX. Following Treatment with Various Kinds of Formalin 



Solutions. 



