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

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Final revised paper (published on 07 Oct 2016)
Preprint (discussion started on 17 Jun 2016)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'Review Comments', Anonymous Referee #1, 18 Jul 2016
- AC1: 'response to comments of Referee #1', Xueru Huang, 10 Aug 2016
RC2: 'Review of “Effect of iron oxide on nitrification in two agricultural soils with different pH” by Xueru Huang et al.', Anonymous Referee #2, 20 Jul 2016
- AC2: 'response to comments of Referee #2', Xueru Huang, 10 Aug 2016

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

ED: Reconsider after major revisions (30 Aug 2016) by Sébastien Fontaine

AR by Xueru Huang on behalf of the Authors (07 Sep 2016) Author's response Manuscript

ED: Referee Nomination & Report Request started (16 Sep 2016) by Sébastien Fontaine

RR by Anonymous Referee #1 (19 Sep 2016)

ED: Publish subject to technical corrections (20 Sep 2016) by Sébastien Fontaine

AR by Xueru Huang on behalf of the Authors (21 Sep 2016) Manuscript

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.