Laboratory study of the effects of two nitrification inhibitors on greenhouse gas emissions from a slurry-treated arable soil: impact of diurnal temperature cycle

D. J. Hatch, H. Trindade, L. M. Cardenas, J. Carneiro, D. Scholefield, C. D. Clegg, P. J. Hobbs

Research output: Contribution to journalArticlepeer-review

112 Citations (SciVal)

Abstract

An automated laboratory soil incubation system enabled the effects on gaseous emissions from a soil to be quantified accurately, when amended with slurry plus a nitrification inhibitor: dicyandiamide (DCD), or 3,4-dimethylpyrazole phosphate (DMPP). Nitrification inhibitors applied with slurry under simulated Portuguese conditions were very efficient in reducing N2O emission, and did not increase CH4 emissions significantly, when the soil was predominantly aerobic. The inhibitors were also indirectly effective in reducing N2O emissions due to denitrification during a subsequent anaerobic phase. All gaseous emissions followed strong diurnal patterns that were positively correlated with soil temperature and obeyed a Q 10=2 relationship. The widespread use of DCD and DMPP inhibitors with slurry applied to Portuguese soils could have the potential to reduce N2O emissions from this source by ten- to 20-fold.
Original languageEnglish
Pages (from-to)225-232
Number of pages8
JournalBiology and Fertility of Soils
Volume41
Issue number4
Early online date15 Feb 2005
DOIs
Publication statusPublished - May 2005
Externally publishedYes

Keywords

  • nitrous oxide
  • slurry
  • greenhouse gases
  • air quality
  • nitrification inhibitor

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