The evidence for the ferment theory of nitrification is now very complete.
"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
We have already, in the chapter on Nitrification, referred to the action of gypsum in promoting nitrification.
"Manures and the principles of manuring" by Charles Morton Aikman
Active Mixing Tames Nitrification .
Redwood City, Calif, installs active mixer to control nitrification episodes.
Results from replicated strip trials harvested by Iowa Soybean Association (ISA) On-Farm Network growers show that fall-applied anhydrous ammonia might benefit from proper use of a nitrification inhibitor.