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

Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

112 Dyfyniadau(SciVal)

Crynodeb

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.
Iaith wreiddiolSaesneg
Tudalennau (o-i)225-232
Nifer y tudalennau8
CyfnodolynBiology and Fertility of Soils
Cyfrol41
Rhif cyhoeddi4
Dyddiad ar-lein cynnar15 Chwef 2005
Dynodwyr Gwrthrych Digidol (DOIs)
StatwsCyhoeddwyd - Mai 2005
Cyhoeddwyd yn allanolIe

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