A regional experiment suggests that soil texture is a major control of N2O emissions from tile-drained winter wheat fields during the fertilization period

Gu, Jiangxin; Nicoullaud, Bernard; Rochette, Philippe; Grossel, Agnès; Hénault, Catherine; Cellier, Pierre; Richard, Guy

doi:10.1016/j.soilbio.2013.01.029

Cited by 114 publications

(58 citation statements)

References 41 publications

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“…In general, clayey soils exhibit a lower gas diffusivity compared to coarse-textured soils. This regularly results in higher denitrification in the former with higher N 2 O emission rates, but also a higher probability for the consecutive reduction to N 2 (Ball, 2013;Gu et al, 2013;Senbayram et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Potential short-term losses of N2O and N2 from high concentrations of biogas digestate in arable soils

Fiedler

Augustin

Wrage‐Mönnig

et al. 2017

SOIL

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Abstract. Biogas digestate (BD) is increasingly used as organic fertilizer, but has a high potential for NH 3 losses. Its proposed injection into soils as a countermeasure has been suggested to promote the generation of N 2 O, leading to a potential trade-off. Furthermore, the effect of high nutrient concentrations on N 2 losses as they may appear after injection of BD into soil has not yet been evaluated. Hence, we performed an incubation experiment with soil cores in a helium-oxygen atmosphere to examine the influence of soil substrate (loamy sand, clayey silt), water-filled pore space (WFPS; 35, 55, 75 %) and application rate (0, 17.6 and 35.2 mL BD per soil core, 250 cm 3 ) on the emission of N 2 O, N 2 and CO 2 after the usage of high loads of BD. To determine the potential capacity for gaseous losses, we applied anaerobic conditions by purging with helium for the last 24 h of incubation. Immediate N 2 O and N 2 emissions as well as the N 2 / (N 2 O+N 2 ) product ratio depended on soil type and increased with WFPS, indicating a crucial role of soil gas diffusivity for the formation and emission of nitrogenous gases in agricultural soils. However, emissions did not increase with the application rate of BD. This is probably due to an inhibitory effect of the high NH + 4 content of BD on nitrification. Our results suggest a larger potential for N 2 O formation immediately following BD injection in the fine-textured clayey silt compared to the coarse loamy sand. By contrast, the loamy sand showed a higher potential for N 2 production under anaerobic conditions. Our results suggest that short-term N losses of N 2 O and N 2 after injection may be higher than probable losses of NH 3 following surface application of BD.

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Section: Introductionmentioning

confidence: 99%

Potential short-term losses of N2O and N2 from high concentrations of biogas digestate in arable soils

Fiedler

Augustin

Wrage‐Mönnig

et al. 2017

SOIL

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“…Denitrification becomes the major source of N 2 O when oxygen concentrations in soil air are limited, primarily when a soil's water-filled pore space (WFPS) is greater than 60% [7,8]. In field measurements, large N 2 O emissions usually occur when nitrogen (N) fertilizer applications are accompanied by rainfall or irrigation events [9][10][11][12][13][14]. Annual N 2 O emissions have been shown to increase with N input rates; this fact led to the development of the direct emission factor (EF d ) concept [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

“…To compile national N 2 O emissions inventories, IPCC Guidelines [19] provide a default EF d of 1% and a large uncertainty range (from 0.3% to 3%) for cultivated mineral soils. Such uncertainty is primarily due to the complex relationships between N 2 O emissions and soil properties, climate, and artificial practices [11,12,20,21]. Although the N 2 O flux data recorded has increased in recent years, there is still a great deal of uncertainty in the assessment of EF d , and therefore N 2 O, emissions [15,18,20].…”

Section: Introductionmentioning

confidence: 99%

Effects of N Fertilizer Application on Soil N2O Emissions and CH4 Uptake: A Two-Year Study in an Apple Orchard in Eastern China

Xie

et al. 2017

Atmosphere

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Land use changes from cropland to orchards in Eastern China have raised serious concerns about the regional nitrogen (N) cycle and greenhouse gas balance. We measured soil nitrous oxide (N 2 O) emissions and methane (CH 4 ) uptake using manual static chambers in an apple orchard. The primary aims were to assess the effect of N fertilizer application on gas fluxes and quantify the site-specific N 2 O emission factor (EF d ). Field experiments were arranged in a randomized block design with three N input rates (0, 800 and 2600/2000 kg N ha −1 year −1 ). We found that orchard soils were a negligible CH 4 sink (−1.1 to −0.4 kg C ha −1 year −1 ). Annual N 2 O emissions responded positively to N input rates, ranging from 34.1 to 60.3 kg N ha −1 year −1 . EF d ranged from 1.00% to 1.65% with a mean of 1.34%. The extremely large background emissions of N 2 O (34.1-34.3 kg N ha −1 year −1 ) most likely originated from nitrate accumulation in the soil profile because of historical overuse of N fertilizer. We conclude that (1) site-specific EF d is suitable for assessing regional direct N 2 O emissions from upland orchards; and (2) conventional fertilization regimes must be avoided, and reduced N input rates are recommended in the study region.

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“…Hot spots such as riparian forest in the Shibetsu watershed play an import role in mitigating riverine NO 3 − -N export, and increasing the amount of riparian forest may be a good practice for watershed management. However, the denitrification process may also increase N 2 O emission and contribute to global warming (Gu et al 2013). Therefore, riparian forest as a watershed management practice should be given more consideration, not only in the aspect of mitigating riverine NO 3 − -N export but also in the risk for climate change.…”

Section: Resultsmentioning

confidence: 99%

Factors controlling the long-term temporal and spatial patterns of nitrate-nitrogen export in a dairy farming watershed

Jiang

Wang

Hatano

et al. 2015

Environ Monit Assess

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It is difficult to investigate the factors that control the riverine nitrate-nitrogen (NO3--N) export in a watershed which gains or losses groundwater. To control the NO3--N contamination in these watersheds, it is necessary to investigate the factors that are related to the export of NO3--N that is only produced by the watershed itself. This study was conducted in the Shibetsu watershed located in eastern Hokkaido, Japan, which gains external groundwater contribution (EXT) and 34% of the annual NO3--N loading occurs through EXT. The riverine NO3--N exports from 1980 to 2009 were simulated by the SWAT model, and the factors controlling the temporal and spatial patterns of NO3--N exports were investigated without considering the EXT. The results show that hydrological events control NO3--N export at the seasonal scale, while the hydrological and biogeochemical processes are likely to control NO3--N export at the annual scale. There was an integrated effect among the land use, topography, and soil type related to denitrification process, that regulated the spatial patterns of NO3--N export. The spatial distribution of NO3--N export from hydrologic response units (HRUs) identified the agricultural areas with surplus N that are vulnerable to nitrate contamination. A new standard for the N fertilizer application rate including manure application should be given to control riverine NO3--N export. This study demonstrates that applying the SWAT model is an appropriate method to determine the temporal and spatial patterns of NO3--N export from the watershed which includes EXT and to identify the crucial pollution areas within a watershed in which the management practices can be improved to more effectively control NO3--N export to water bodies.

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A regional experiment suggests that soil texture is a major control of N2O emissions from tile-drained winter wheat fields during the fertilization period

Cited by 114 publications

References 41 publications

Potential short-term losses of N<sub>2</sub>O and N<sub>2</sub> from high concentrations of biogas digestate in arable soils

Potential short-term losses of N<sub>2</sub>O and N<sub>2</sub> from high concentrations of biogas digestate in arable soils

Effects of N Fertilizer Application on Soil N2O Emissions and CH4 Uptake: A Two-Year Study in an Apple Orchard in Eastern China

Factors controlling the long-term temporal and spatial patterns of nitrate-nitrogen export in a dairy farming watershed

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A regional experiment suggests that soil texture is a major control of N2O emissions from tile-drained winter wheat fields during the fertilization period

Cited by 114 publications

References 41 publications

Potential short-term losses of N&lt;sub&gt;2&lt;/sub&gt;O and N&lt;sub&gt;2&lt;/sub&gt; from high concentrations of biogas digestate in arable soils

Potential short-term losses of N&lt;sub&gt;2&lt;/sub&gt;O and N&lt;sub&gt;2&lt;/sub&gt; from high concentrations of biogas digestate in arable soils

Effects of N Fertilizer Application on Soil N2O Emissions and CH4 Uptake: A Two-Year Study in an Apple Orchard in Eastern China

Factors controlling the long-term temporal and spatial patterns of nitrate-nitrogen export in a dairy farming watershed

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Potential short-term losses of N<sub>2</sub>O and N<sub>2</sub> from high concentrations of biogas digestate in arable soils

Potential short-term losses of N<sub>2</sub>O and N<sub>2</sub> from high concentrations of biogas digestate in arable soils