The heating of soil to the same temperature effectually destroys its nitrifying power.
"Scientific American Supplement, Vol. XIX, No. 470, Jan. 3, 1885" by Various
The work of the nitrifying germs is called nitrification.
"The First Book of Farming" by Charles L. Goodrich
To this class of organism the nitrifying organisms belong.
"Manures and the principles of manuring" by Charles Morton Aikman