The Significance of the Hydrogen-Ion Concentration in Soil Nitrification Studies

Although considerable work has been reported in the literature which shows some correlation between nitrification and the crop-producing power of soils, very little attention has been given to the significance of the soil reaction in nitrification studies. The object of this paper is to consider this problem and data are presented which show the relation of the reaction of the soil or its hydrogen-ion concentration to its nitrifying capacity