Erratum to “Quantifying annual N2O emission fluxes from grazed grassland under a range of inorganic fertiliser nitrogen inputs” [Agric. Ecosyst. Environ. 136 (2010) 218–226]

Cardenas, L. M.; Thorman, R. E.; Ashlee, N.; Butler, M. R.; Chadwick, D. R.; Chambers, B. J.; Cuttle, S. P.; Donovan, N.; Kingston, H. M.; Lane, Simon I. R.; Dhanoa, M. S.; Scholefield, D.

doi:10.1016/j.agee.2010.05.002

Cited by 3 publications

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“…Although fertilisation has ceased at the SIG land use since the previous decade, the IG land uses are currently fertilised at an annual rate between 100 and 200 kg N ha À1 , a fertilisation intensity, which was shown to increase denitrication activity and lead to high N 2 O emissions from grasslands in the UK. 55 Both the SIG and the IG land use types are grazed throughout the year and grazing has been related to increased denitrication rates, because of the additional inputs of organic C and N through the deposition of urine and faeces. 31,56 Moreover, the density of grazing (i.e.…”

Section: Discussionmentioning

confidence: 99%

Denitrification potential of organic, forest and grassland soils in the Ribble-Wyre and Conwy River catchments, UK

Sgouridis

Ullah

2014

Environ. Sci.: Processes Impacts

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Soil denitrification activity can be highly variable due to the effects of varied land use management practices within catchments on the biogeochemical regulators of denitrification. To test this assumption in the context of mixed-use rural catchments, it was hypothesised that the relative magnitude of denitrification activity may be regulated, among others, by a gradient of soil nitrate (low to high) between organic (peat bog, heathland, and acid grassland), forest (coniferous and deciduous), and grassland (improved and semi-improved) rural land use types. The denitrification potential (DP) of organic, forest and grassland soils, in two UK catchments was measured in the laboratory. Land use type significantly (p < 0.05) influenced the DP, which ranged between 0.02 and 63.3 mg N m(-2) h(-1). The averaged DP of organic and forest soils (1.08 mg N m(-2) h(-1)) was 3 and 10 times less than the DP of semi-improved (4.06 mg N m(-2) h(-1)) and improved (12.09 mg N m(-2) h(-1)) grassland soils, respectively; and among others, nitrate correlated positively (p < 0.05) with the DP. The results indicated that the difference in soil nitrate concentration between organic (naturally low in nitrate availability) and grassland soils (nitrate enriched due to land management) partially regulated the extent of DP. In the absence of N fertilisation, except for the atmospheric N deposition, the relatively low net nitrification potential (as a source of nitrate for denitrifiers) of organic and forest soils alone seem to have resulted in lower denitrifier's activity compared to grassland soils. Moreover, the interactions between soil organic carbon, pH, bulk density, water filled pore space, and texture, as these are influenced by the relative degree of land management, exerted additional controls on the DP. The results suggest that land management can have significant effects on denitrification, and thus needs to be considered when modelling and/or predicting the response of denitrification to land use change.

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Section: Discussionmentioning

confidence: 99%

Denitrification potential of organic, forest and grassland soils in the Ribble-Wyre and Conwy River catchments, UK

Sgouridis

Ullah

2014

Environ. Sci.: Processes Impacts

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Effect of the application of cattle urine with or without the nitrification inhibitor DCD, and dung on greenhouse gas emissions from a UK grassland soil

Cardenas

Misselbrook

Hodgson

et al. 2016

Agriculture, Ecosystems & Environment

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Nitrogen application rate and nitrous oxide flux from a pastoral soil

Kelliher

Nobel

2014

New Zealand Journal of Agricultural Research

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Nitrogen (N) can be lost to the atmosphere by nitrous oxide (N 2 O) flux from soils. For pastoral soils, N is applied in N fertiliser and excreta deposited by farmed, grazing animals. We postulated that soil N 2 O flux would be linearly related to the N application rate (Nrate). As a test, we applied eight treatments as rates of urea (0-1500 kg N ha −1 ) to samples of a pastoral soil and measured the N 2 O flux, pH and ammonium (NH 4 + ) and nitrate (NO 3 − ) concentrations at intervals for 67 days. When fluxes were accumulated, the variability or variance of treated replicates increased with time and increasing Nrate. For 67-day, cumulative N 2 O fluxes, a linear regression with the N application rate, weighted by the inverse of the replicates' variance, yielded a statistically significant relationship (P < 0.05), accounting for 92% of the variability. A second-order term was too small to be statistically significant for another regression using a polynomial function. Thus, there was no evidence to reject the linear hypothesis. The fluxes were also related to the pH and (NH 4 + + NO 3 − ) concentration. These relationships warrant further study in different soils under field conditions.

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Erratum to “Quantifying annual N2O emission fluxes from grazed grassland under a range of inorganic fertiliser nitrogen inputs” [Agric. Ecosyst. Environ. 136 (2010) 218–226]

Cited by 3 publications

References 0 publications

Denitrification potential of organic, forest and grassland soils in the Ribble-Wyre and Conwy River catchments, UK

Denitrification potential of organic, forest and grassland soils in the Ribble-Wyre and Conwy River catchments, UK

Effect of the application of cattle urine with or without the nitrification inhibitor DCD, and dung on greenhouse gas emissions from a UK grassland soil

Nitrogen application rate and nitrous oxide flux from a pastoral soil

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