Effects of micro-molar H2O2 on inhibiting soil nitrification

Qin, J and Lin, C 2018, 'Effects of micro-molar H2O2 on inhibiting soil nitrification' , Geoderma, 333 , pp. 145-148.

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Abstract

Microcosm experiments were conducted to examine the effects of micro-molar hydrogen peroxide (H2O2) on soil nitrification in three scenarios: (a) without added fresh biomass and magnetite, (b) with added fresh biomass, and (c) with added magnetite. The results show that nitrification of the added ammonium was impeded in the presence of H2O2 at a concentration range of 20–50μM probably as a result of weakened activities of ammoniaoxidizing microbes due to oxidative stress caused by H2O2 and possibly hydroxyl radical (·OH). Application of grass clippings or magnetite enhanced the effects of H2O2 on inhibiting soil nitrification. The research findings obtained from this study have implications for understanding the complication of soil nitrification by rainwaterborne H2O2 during flood events and developing cost-effective and environmentally friendly techniques for nitrification inhibition in fertilized soils.

Item Type: Article
Schools: Schools > School of Environment and Life Sciences > Ecosystems and Environment Research Centre
Journal or Publication Title: Geoderma
Publisher: Elsevier
ISSN: 0016-7061
Related URLs:
Funders: Natural Science Foundation of Guangdong Province
Depositing User: C Lin
Date Deposited: 09 Aug 2018 13:07
Last Modified: 09 Mar 2020 09:07
URI: http://usir.salford.ac.uk/id/eprint/48007

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