Nitrogen dynamics after low-emission applications of dairy slurry or fertilizer on perennial grass: a long term field study employing natural abundance of δ15N

Zhang, H.; Hunt, Derek; Ellert, Benjamin H.; Maillard, Émilie; Kleinman, Peter J. A.; Spiegal, Sheri; Angers, Denis A.; Bittman, S.

doi:10.1007/s11104-021-04998-7

Cited by 5 publications

(1 citation statement)

References 45 publications

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“…Application of manures is known to increase soil N stocks (D'Amours et al 2021;Zhang et al 2021), which may explain increased N 2 O emissions detected during subsequent growing seasons (Dungan et al 2017). The unexpected similarity in PWE between manure and other fertilizer types could be due to high variability within treatments because the build-up of soil N leads to proportional increases in GS and NGS emissions, or because the building up of N stocks takes longer than the duration of the studies used in this analysis.…”

Section: Proportion Of Emissions During Non-growing Seasonmentioning

confidence: 99%

Ratio of non-growing season to growing season N₂O emissions in Canadian croplands: an update to national inventory methodology

et al. 2023

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National inventory reporting of agricultural nitrous oxide (N2O) emissions in Canada is based primarily on measurements obtained using static chambers. In regions with cold winters and an accumulated snowpack (including Canada), these measurements tend to focus on the growing season (typically May-Oct). However, research has shown that emissions continue throughout the non-growing season (NGS) and that these account for a significant proportion of annual emissions. In the Canadian National Inventory NGS emissions currently are assumed to be adequately captured in western Canada, while they are accounted for in eastern Canada by multiplying the growing season emissions by a correction factor of 1.4. a value that was derived based on a limited number of measurements. Here we use recent Canadian studies to validate this correction factor. We collected data from available Canadian studies that measured soil N2O emissions from agricultural systems for the entire year, and determined the proportion of these emissions that occurred during the NGS. The proportion of annual N2O emissions that occurred during the NGS varied widely, ranging from -4 to 119% with a mean of 35.5%, compared to the previous estimate of 30%. Due to high variability, few differences were observed between means associated with climatic, soil and management variables. To correct for NGS N2O emissions from Canadian agricultural soils we suggest that the current correction factor for converting growing season to total annual emissions be changed from 1.4 to 1.55 and that this be used for all agricultural soils in Canada rather than just eastern Canada.

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Section: Proportion Of Emissions During Non-growing Seasonmentioning

confidence: 99%

Ratio of non-growing season to growing season N₂O emissions in Canadian croplands: an update to national inventory methodology

et al. 2023

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Multilevel integration of agricultural systems: the case of a modern peri-urban region

Bittman,

Hunt

2024

Future Food Systems

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Impacts of slurry application methods and inhibitors on gaseous emissions and N2O pathways in meadow-cinnamon soil

Liu

Zhang

et al. 2022

Journal of Environmental Management

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Nitrogen dynamics after low-emission applications of dairy slurry or fertilizer on perennial grass: a long term field study employing natural abundance of δ15N

Cited by 5 publications

References 45 publications

Ratio of non-growing season to growing season N₂O emissions in Canadian croplands: an update to national inventory methodology

Ratio of non-growing season to growing season N₂O emissions in Canadian croplands: an update to national inventory methodology

Multilevel integration of agricultural systems: the case of a modern peri-urban region

Impacts of slurry application methods and inhibitors on gaseous emissions and N2O pathways in meadow-cinnamon soil

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Nitrogen dynamics after low-emission applications of dairy slurry or fertilizer on perennial grass: a long term field study employing natural abundance of δ15N

Cited by 5 publications

References 45 publications

Ratio of non-growing season to growing season N2O emissions in Canadian croplands: an update to national inventory methodology

Ratio of non-growing season to growing season N2O emissions in Canadian croplands: an update to national inventory methodology

Multilevel integration of agricultural systems: the case of a modern peri-urban region

Impacts of slurry application methods and inhibitors on gaseous emissions and N2O pathways in meadow-cinnamon soil

Contact Info

Product

Resources

About

Ratio of non-growing season to growing season N₂O emissions in Canadian croplands: an update to national inventory methodology

Ratio of non-growing season to growing season N₂O emissions in Canadian croplands: an update to national inventory methodology