Journal
SOIL BIOLOGY & BIOCHEMISTRY
Volume 142, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.soilbio.2020.107726
Keywords
N2O; Phosphorus; Carbon-nitrogen-phosphorus interaction; Denitrification; Temperate grassland
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Funding
- National Development Plan, through the Research Stimulus Fund [15S655]
- Teagasc Walsh Fellowship Scheme
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This research investigated the effect of long-term phosphorus (P) addition relative to carbon (C) availability on nitrous oxide (N2O) emissions from an ungrazed grassland soil via two incubation experiments. No significant effect of soil P on N2O was found under C-limited conditions, while under added-C, cumulative N2O was significantly higher from low-P (p < 0.05) rather than high-P soils. CO2 was not significantly different between Plevels. This highlights the influence of soil P on N2O emissions under non C-limiting conditions. This is one of the first studies demonstrating available-C moderating the effect of P on N2O emissions from temperate grassland soils.
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