- Title
- The potential value of biochar in the mitigation of gaseous emission of nitrogen
- Creator
- Thangarajan, Ramya; Bolan, Nanthi S.; Kunhikrishnan, Anitha; Wijesekara, Hasintha; Xu, Yilu; Tsang, Daniel C. W.; Song, Hocheol; Ok, Yong Sik; Hou, Deyi
- Relation
- ARC.DP140100323 http://purl.org/au-research/grants/arc/DP140100323
- Relation
- Science of the Total Environment Vol. 612, p. 257-268
- Publisher Link
- http://dx.doi.org/10.1016/j.scitotenv.2017.08.242
- Publisher
- Elsevier
- Resource Type
- journal article
- Date
- 2018
- Description
- Nitrogen (N) losses through gaseous emission of ammonia (NH₃) and nitrous oxide (N₂O) can contribute to both economic loss and environmental degradation. This study examined the effect of biochar and a chemical nitrification inhibitor, dicyandiamide (DCD), on N transformation and N losses via gaseous emission of NH₃ and N₂O from agricultural soils treated with a range of organic and inorganic N sources. The addition of DCD reduced N₂O emission from both organic and inorganic N sources treated soils by 75%, but increased ammonium (NH₄⁺) concentration and subsequently induced high NH₃ emission from the soils. In contrast, the addition of biochar reduced both N₂O and NH₃ emissions from organic and inorganic N sources treated soils by 23% and 43%, respectively. The effectiveness of biochar and DCD in reducing NH₃ volatilization and N₂O emission depends on the nature of the N sources and their initial mineral N concentration. The study demonstrated that biochar can be used to mitigate N losses resulting from NH₃ volatilization and N₂O emission.
- Subject
- biochar; gaseous emission; soil organic amendments; nitrogen transformations; nitrification inhibitors
- Identifier
- http://hdl.handle.net/1959.13/1411067
- Identifier
- uon:36281
- Identifier
- ISSN:0048-9697
- Language
- eng
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