Greenhouse gas fluxes associated with soybean production under two tillage systems in southwestern Quebec

Almaraz, Juan J.; Zhou, Xiaomin; Mabood, Fazli; Madramootoo, Chandra A.; Rochette, Philippe; Ma, Bao–Luo; Smith, Donald L.

doi:10.1016/j.still.2009.02.003

Cited by 84 publications

(51 citation statements)

References 33 publications

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“…This was attributed to complex interactions between the effects of residue-N transformation, C availability and soil physical conditions. Where legumes are incorporated by ploughing, N 2 O emissions tend to be appreciably higher than with no-till, indicating a further advantage for no-till by including legumes in a rotation (Almaraz et al, 2009).…”

Section: N 2 O Emissionsmentioning

confidence: 99%

“…On well-aerated soils the impact of no-till on N 2 O emissions is small (Rochette, 2008) and some studies have indicated lower N 2 O emissions with no-till than for ploughed soils (Almaraz et al, 2009;Mutegi, 2010). The considerable level of variability is illustrated in Table 9.…”

Section: N 2 O Emissionsmentioning

confidence: 99%

“…Factors influencing N 2 O emissions from no-till include soil wetness and compaction status (which together influence soil aeration and the N 2 O production mechanism through denitrification), soil temperature, nitrogen fertiliser type and application method, crop type and the extent of crop residues cover. Of these, soil moisture status is probably the most important (Ball et al, 2008;Rochette, 2008;Almaraz et al, 2009). The higher moisture content and reduced aeration under no-till, especially after rainfall on heavier poorly drained soils in northern Europe, leads to greater denitrification and emission of N 2 O than under ploughing (Christian and Ball, 1994;Vinten et al, 2002;Oorts et al, 2007b;Ball et al, 2008;Regina and Alakukku, 2010), while very wet soils favour the reduction of N 2 O to N 2 .…”

Section: N 2 O Emissionsmentioning

confidence: 99%

“…At the same time, tillage has an accumulative effect during the whole growing season in increasing microbial decomposition resulting in 20% higher soil CO 2 emissions under conventional tillage than under no-till. Part of this effect can be attributed to greater root respiration under ploughing, especially in warmer months (Almaraz et al, 2009). Reduction of CO 2 fluxes under reduced tillage compared with conventional tillage have also been reported by Sánchez et al (2002Sánchez et al ( , 2003 in soils of the Spanish plateau.…”

Section: N 2 O Emissionsmentioning

confidence: 99%

See 3 more Smart Citations

No-till in northern, western and south-western Europe: A review of problems and opportunities for crop production and the environment

Soane¹,

Ball²,

Arvidsson³

et al. 2012

Soil and Tillage Research

637

501

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Section: N 2 O Emissionsmentioning

confidence: 99%

Section: N 2 O Emissionsmentioning

confidence: 99%

Section: N 2 O Emissionsmentioning

confidence: 99%

Section: N 2 O Emissionsmentioning

confidence: 99%

See 2 more Smart Citations

No-till in northern, western and south-western Europe: A review of problems and opportunities for crop production and the environment

Soane¹,

Ball²,

Arvidsson³

et al. 2012

Soil and Tillage Research

637

501

View full text Add to dashboard Cite

“…A laboratory study using repacked soil cores showed that soil N 2 O emissions increased from 3.5 to 16.7 mg N kg −1 soil when soybean residues were incorporated into the soil instead of being left on the soil surface (35 d incubation at 90% WFPS) (Aulakh et al 1991). A field study also concluded that soybean residue incorporation into soils (conventional tillage treatment) increased N 2 O emissions compared with soil N 2 O emissions when soybean residues were left on top of the soil (no-tillage treatment) (Almaraz et al 2009). Another field study showed a 30-fold increase in N 2 O emissions after incorporation of soybean residues into the soil after the harvest compared with the preharvest levels.…”

Section: Tillagementioning

confidence: 99%

Mitigation of postharvest nitrous oxide emissions from soybean ecosystems: a review

Uchida

Akiyama

2013

Soil Science and Plant Nutrition

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In this review, the current knowledge of nitrous oxide (N 2 O) emissions from soybean (Glycine max (L.) Merr.) ecosystems, particularly on postharvest N 2 O emissions, is summarized and controlling factors of postharvest N 2 O emissions from soybean ecosystems are discussed. A new biological method to mitigate N 2 O emission is also presented. The latest (2006) guidelines of the Intergovernmental Panel on Climate Change (IPCC) concluded that N 2 O emissions derived directly from biological nitrogen (N) fixation were not significant in legume crop ecosystems. The default N 2 O emission factor from biological N fixation was revised to zero, whereas the default N 2 O emission factor for the decomposition of legume crop residues (postharvest N 2 O emissions) was the same as that for nonlegume crop residues (1%). From previously measured field data, the percentage of N in soybean residue emitted as N 2 O after harvest was calculated to determine emission factors. Values ranged from 0.0-10.0% (average 1.3% ± 2.7%, median: 0.2%), indicating relatively low emission factors. The average emission factor calculated for N 2 O emissions from N in soybean residues was slightly higher than the default emission factor for N in crop residue specified in the guidelines. However, the volume of field-measured postharvest N 2 O emissions in soybean ecosystems is low compared with data for N 2 O emissions during the crop growing season. Previous field-measured data demonstrated that N 2 O emissions often peaked sharply immediately after the harvest. However, values for N 2 O fluxes in the currently available field data were determined on a weekly or monthly basis. This large time gap between samplings may have resulted in underestimation of postharvest N 2 O emissions in soybean ecosystems. More detailed field studies on postharvest N 2 O emissions from soybean ecosystems are needed. Nodule decomposition is the major source of postharvest N 2 O emissions in soybean ecosystems. A new microbiological method was recently developed to mitigate postharvest N 2 O emissions from soybean ecosystems utilizing N-fixing bacteria with increased N 2 O-reducing activity (increased expression of nosZ). This approach may potentially be applied to other leguminous crops and non-legume ecosystems. Ongoing research on the relationships between soil N 2 O emissions and nosZ may reveal a new method for N 2 O mitigation in the future.

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Soil carbon dioxide emissions from maize (Zea mays L.) fields as influenced by tillage management and climate*

Mohammed

Mirzaei

Törő

et al. 2021

Irrigation and Drainage

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Emissions of CO2 from the soil are the second‐largest component of the global carbon cycle, which has altered the climate and led to climate change. The main aim of this research was to evaluate the direct impact of climate and soil management systems on soil carbon emissions. Thus, CO2 emissions were measured from maize fields located in two different climate regions (continental and semi‐arid). The experimental design involved two different soil management systems (conventional tillage [CT], non‐tillage [NT]) from two different sites (Debrecen [Hungary], Karaj [Iran]). The results showed that total CO2 emission from the cultivated system (CT) was higher than that from the non‐cultivated (NT) one, regardless of the climate region. However, CO2 emissions from agricultural soil in a humid region are significantly different (p < .05) from semi‐arid regions, which clearly emphasizes the role of climate conditions in the CO2 emission processes. However, the general linear model reveals that all studied variables (soil management systems, date of measurement, soil temperature, soil water content) had a significant (p < .05) effect on soil carbon emission, where the explained variance was 0.866. The findings of this research stress the importance of NT in CO2 mitigations on the farm scale. However, the output could help to draw up mitigation strategies to minimize the total greenhouse gas emissions from agricultural soil in both countries.

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Greenhouse gas fluxes associated with soybean production under two tillage systems in southwestern Quebec

Cited by 84 publications

References 33 publications

No-till in northern, western and south-western Europe: A review of problems and opportunities for crop production and the environment

No-till in northern, western and south-western Europe: A review of problems and opportunities for crop production and the environment

Mitigation of postharvest nitrous oxide emissions from soybean ecosystems: a review

Soil carbon dioxide emissions from maize (Zea mays L.) fields as influenced by tillage management and climate*

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