Effect of iron oxide on nitrification in two agricultural soils with
different pH

Huang, Xueru; Zhu-Barker, Xia; Horwath, William R.; Faeflen, Sarwee J.; Luo, Hongyan; Xin, Xiaoping; Jiang, Xianjun

doi:https://doi.org/10.5194/bg-13-5609-2016

Articles | Volume 13, issue 19

https://doi.org/10.5194/bg-13-5609-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/bg-13-5609-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 13, issue 19

Research article

|

07 Oct 2016

Research article |

| 07 Oct 2016

Effect of iron oxide on nitrification in two agricultural soils with different pH

Xueru Huang, Xia Zhu-Barker, William R. Horwath, Sarwee J. Faeflen, Hongyan Luo, Xiaoping Xin, and Xianjun Jiang

Data sets

Effect of iron oxide on nitrification in two agricultural soils with different pH X. Huang https://doi.org/10.6084/m9.figshare.3978216.v1

Short summary

The effect of Fe oxide on N transformation processes were different in soils as a function of pH. ¹⁵N-labelled ammonium and nitrate were used separately to determine N transformation rates combined with Fe oxide (ferrihydrite) addition. Iron oxide addition stimulated net nitrification in the low-pH soil (pH 5.1), while the opposite occurred in the high-pH soil (pH 7.8). Fe oxide increased NH3-N availability by stimulating N mineralization and inhibiting N immobilization at low pH.