Influence of integrated weed management system on N-cycling microbial communities and N2O emissions

Vermue, Anthony; Philippot, Laurent; Munier‐Jolain, Nicolas; Hénault, Catherine; Nicolardot, Bernard

doi:10.1007/s11104-013-1821-y

Cited by 18 publications

(9 citation statements)

References 61 publications

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“…However, the experimental conditions could be considered as comparable between cropping systems, thereby allowing us to compare their emissions; thus, seasonal patterns were identified for the different systems. The emission levels of systems S1, S3, and S5 were globally comparable to those observed in 2011 in the same area (Vermue et al 2013), as well as to punctual measurements performed in the agricultural region of eastern France (Henault et al 1998) for comparable pedoclimatic conditions.…”

Section: Intensity and Determinism Of Observed N 2 O Emissionssupporting

confidence: 80%

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High N2O variations induced by agricultural practices in integrated weed management systems

Vermue

Nicolardot

Hénault

2016

Agron. Sustain. Dev.

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Integrated weed management aims to decrease the dependence of cropping systems on herbicides by using a combination of several agricultural practices. Environmental impacts of individual practices under various conditions are already known. However, there is scarce knowledge on the impact of combining several practices. Therefore, we studied N 2 O emissions of weed management cropping systems that use differing practices such as crop diversity, tillage, and herbicide pressure, during about 1 year. Data were compared with a conventionally managed cropping system. Results were also simulated using the NOE model. Results show a large variation of N 2 O emissions, ranging from 177 g N 2 O-N/ha for intensive tillage integrated weed management to 362 g N 2 O-N/ha for the conventional cropping system, 777 g N2O-N/ha for the no herbicide cropping system and 5226 g N 2 O-N/ha for no-till integrated weed management. Most N 2 O emissions occurred in spring, despite the absence of fertilizing related N 2 O peaks. The lowest emissions occurred in autumn and winter. Emissions are explained by interactions between specific soil potential denitrification rate, soil bulk density, temperature, soil water, and inorganic N contents. N 2 O emissions are accurately predicted by the model NOE, with a global Nash-Sutcliffe coefficient of efficiency equal to 0.80.

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Section: Intensity and Determinism Of Observed N 2 O Emissionssupporting

confidence: 80%

“…Nitrous oxide (N 2 O) emissions were measured continuously using the automated chamber method described in Vermue et al (2013). A specific set of 24 static chambers (length 70 cm, width 70 cm, height 30 cm) was set up (Fig.…”

Section: N 2 O Emission Measurementsmentioning

confidence: 99%

High N2O variations induced by agricultural practices in integrated weed management systems

Vermue

Nicolardot

Hénault

2016

Agron. Sustain. Dev.

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“…However, the effects of related soil microbial structure and abundance on N 2 O emission are inconsistent in different studies. Some studies indicate N 2 O emission is strongly linked to bacterial functional group abundance (Morales et al 2010;Cantarel et al 2012), while the others suggest the N 2 O emissions is more related to changes in soil environmental conditions but not the size of the functional microbial community (Attard et al 2011;Vermue et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Effects of fertilization on microbial abundance and emissions of greenhouse gases (CH₄ and N₂O) in rice paddy fields

Fan

Wu³

et al. 2016

Ecology and Evolution

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This study is to explore effects of nitrogen application and straw incorporation on abundance of relevant microbes and CH 4 and N2O fluxes in a midseason aerated rice paddy field. Fluxes of CH 4 and N2O were recorded, and abundance of relevant soil microbial functional genes was determined during rice‐growing season in a 6‐year‐long fertilization experiment field in China. Results indicate that application of urea significantly changed the functional microbial composition, while the influence of straw incorporation was not significant. Application of urea significantly decreased the gene abundances of archaeal amoA and mcrA, but it significantly increased the gene abundances of bacterial amoA. CH 4 emission was significantly increased by fresh straw incorporation. Incorporation of burnt straw tended to increase CH 4 emission, while the urea application had no obvious effect on CH 4 emission. N2O emission was significantly increased by urea application, while fresh or burnt straw incorporation tended to decrease N2O emission. The functional microbial composition did not change significantly over time, although the abundances of pmoA, archaeal amoA, nirS, and nosZ genes changed significantly. The change of CH 4 emission showed an inverse trend with the one of the N2O emissions over time. To some extent, the abundance of some functional genes in this study can explain CH 4 and N2O emissions. However, the correlation between CH 4 and N2O emissions and the abundance of related functional genes was not significant. Environmental factors, such as soil Eh, may be more related to CH 4 and N2O emissions.

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“…Studies of microbial community responses to land use intensification commonly focus on a particular type of agricultural practice at a given field site (Kuramae et al, 2011;Hartmann et al, 2012;Orgiazzi et al, 2012), and specific groups of microorganisms or functional communities (Vermue et al, 2013;Meyer et al, 2014). Whilst individual studies provide information on microbial responses at the local scale, it remains to be clarified how the impacts of land use at the field scale compare to overarching continental scale drivers of microbial diversity such as climate and soil type, and if these impacts differ for different microbial groups.…”

Section: Introductionmentioning

confidence: 99%

Soil conditions and land use intensification effects on soil microbial communities across a range of European field sites

Thomson

Tisserant

Plassart

et al. 2015

Soil Biology and Biochemistry

154

103

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Influence of integrated weed management system on N-cycling microbial communities and N2O emissions

Cited by 18 publications

References 61 publications

High N2O variations induced by agricultural practices in integrated weed management systems

High N2O variations induced by agricultural practices in integrated weed management systems

Effects of fertilization on microbial abundance and emissions of greenhouse gases (CH₄ and N₂O) in rice paddy fields

Soil conditions and land use intensification effects on soil microbial communities across a range of European field sites

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Influence of integrated weed management system on N-cycling microbial communities and N2O emissions

Cited by 18 publications

References 61 publications

High N2O variations induced by agricultural practices in integrated weed management systems

High N2O variations induced by agricultural practices in integrated weed management systems

Effects of fertilization on microbial abundance and emissions of greenhouse gases (CH4 and N2O) in rice paddy fields

Soil conditions and land use intensification effects on soil microbial communities across a range of European field sites

Contact Info

Product

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Effects of fertilization on microbial abundance and emissions of greenhouse gases (CH₄ and N₂O) in rice paddy fields