Nitrous oxide emissions from soil amended with glucose, alfalfa, or corn residues

Shelp, Mei Lin; Beauchamp, E. G.; Thurtell, G. W.

doi:10.1080/00103620009370484

Cited by 29 publications

(18 citation statements)

References 23 publications

(26 reference statements)

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“…There have been many reports of soil amended with different crop residues and the corresponding differences in N 2 O emissions (Aulakh et al 1991;McKenney et al 1993;Shelp et al 2000), so it was unexpected that we found no significant effect of crop rotation. Lemke et al (2002) reported that during the growing season, N 2 O emissions from field pea and lentil crops were significantly lower than from fertilized cereal crops and found that emissions generally reflected N fertilizer inputs.…”

Section: Nitrous Oxide Source Identificationcontrasting

confidence: 44%

Gross nitrogen mineralization in pulse-crop rotations on the Northern Great Plains

Bedard‐Haughn

Comeau

Sangster

2013

Nutr Cycl Agroecosyst

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Pulse crops represent an ever-increasing proportion of cropping systems in the Northern Great Plains. Previous studies have noted apparent benefits associated with pulse crop production that extend beyond the reduced need for N fertilizer in the year of production; these benefits have been attributed to the quality of pulse residues and their effects on N dynamics in subsequent years. This study used isotope dilution techniques to quantify the N-cycling effects of pulse crops in the rotation. Gross N mineralization was measured over three growing seasons at two Agriculture and Agri-Food Canada research sites in Saskatchewan, Canada: Scott (four rotations; one with pulse crop) and Swift Current (three rotations; one with pulse crop). Gross nitrification and the relative contribution of nitrification vs. denitrification to N 2 O emissions were also measured. Across all dates and rotations, the average gross mineralization rate at Scott was 2.0 ± 4.0 mg NH 4 ? -N kg -1 soil d -1 and at Swift Current was 1.4 ± 3.9 mg NH 4 ? -N kg -1 soil d -1 . At both sites, rates were highly variable across the growing season, but tended to be higher at anthesis than either pre-seeding or post-harvest. The only significant difference among rotations was at Swift Current, where the fertilized continuous wheat rotation had the highest gross mineralization rates (rotation average: 2.3 mg NH 4? -N kg -1 soil d -1 ). The lack of difference among most rotations was particularly notable given the differences in residue quantity among the crops. Ultimately, the lower quantity of residues produced by pulse crops appears to be offset by their higher quality.

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Section: Nitrous Oxide Source Identificationcontrasting

confidence: 44%

Gross nitrogen mineralization in pulse-crop rotations on the Northern Great Plains

Bedard‐Haughn

Comeau

Sangster

2013

Nutr Cycl Agroecosyst

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“…Experimental studies brought this relationship into question and in 2006 the IPCC revised its estimates of N 2 O emission, and the assumption now is that no N 2 O emission is directly associated with N fixation (Rochette and Janzen 2005;IPCC 2006). There is, however, a continued assumption that legume residues produced by N-fixing crops contribute to N 2 O emissions (Baggs et al 2000;Shelp et al 2000). Again the magnitude of emissions is uncertain, although a number of studies have demonstrated N 2 O fluxes resulting from leguminous crop residues that are comparable with emissions reported from fertilizer N addition (Ghosh et al 2002).…”

Section: Review Of Shortlisted Measures To Mitigate N 2 O Emissions Umentioning

confidence: 59%

Nitrous oxide mitigation in UK agriculture

Rees

Baddeley

Bhogal

et al. 2013

Soil Science and Plant Nutrition

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Nitrous oxide (N 2 O) makes the single largest contribution to greenhouse gas (GHG) emissions from UK and European Union agriculture. Ambitious government targets for GHG mitigation are leading to the implementation of changes in agricultural management in order to reduce these emissions (mitigation measures). We review the evidence for the contribution of those measures with the greatest mitigation potential which provide an estimated 4.3 t CO 2e ha À1 y À1 GHG reduction in the UK. The mitigation options considered were: using biological fixation to provide nitrogen (N) inputs (clover, Trifolium), reducing N fertilizer, improving land drainage, avoiding N excess, fully accounting for manure/slurry N, species introduction (including legumes), improved timing of mineral fertilizer N application, nitrification inhibitors, improved timing of slurry and manure application, and adopting systems less reliant on inputs. These measures depend mostly on increasing the efficiency of N fertilizer use and improving soil conditions; however, they provide the added benefit of increasing the economic efficiency of farming systems, and can often be viewed as ''win-win'' solutions.

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“…stated that N 2 O emissions from soils were mostly related to the quality of the plant litter. Mineralization of plant residues and the emission of N 2 O were found to be dependent upon the composition of the residues (Németh et al 1996;Shelp et al 2000;Laville et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Soil Nitrous oxide and Carbon dioxide emissions following incorporation of above- and below-ground biomass of green bean

Shaaban

Peng

et al. 2015

Int. J. Environ. Sci. Technol.

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Information on soil N 2 O and CO 2 emissions from above-and below-ground biomass of legume crops is limited in scientific literature. Therefore, a laboratory study was conducted to evaluate the differences in soil N 2 O and CO 2 emissions from the above-and below-ground biomass of green bean. Leave and shoot (LS) and root nodule (Nod) of green bean were incorporated into soil and incubated for 53 days. N 2 O and CO 2 emissions were measured throughout the 53-day study period. Incorporation of organic residues significantly (p B 0.05) increased N 2 O and CO 2 emissions. However, the Nod treatment yielded higher emissions of N 2 O as compared to LS treatment. Cumulative N 2 O emissions were 13-fold and fourfold in Nod and LS treatment as compared to the control, respectively. CO 2 emissions were higher in LS treatment than that of Nod treatment. Cumulative CO 2 emissions were 2.15-fold and 1.15-fold in LS and Nod treatments as compared to the control, respectively. The results of current study suggest that below-ground biomass of legume crops produces higher N 2 O emissions while CO 2 emissions were higher in above-ground biomass.

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Nitrous oxide emissions from soil amended with glucose, alfalfa, or corn residues

Cited by 29 publications

References 23 publications

Gross nitrogen mineralization in pulse-crop rotations on the Northern Great Plains

Gross nitrogen mineralization in pulse-crop rotations on the Northern Great Plains

Nitrous oxide mitigation in UK agriculture

Soil Nitrous oxide and Carbon dioxide emissions following incorporation of above- and below-ground biomass of green bean

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