Spring thaw and growing season N<sub>2</sub>O emissions from a field  planted with edible peas and a cover crop

Pattey, E.; Blackburn, Lynda G; Strachan, I. B.; Desjardins, R.; Dow, D. Webster.

doi:10.4141/cjss06035

Cited by 27 publications

(7 citation statements)

References 36 publications

(46 reference statements)

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“…Increased N 2 O emissions can positively correlate with higher soil temperature and moisture, particularly after precipitation (Dobbie et al, 1999; Griffis et al, 2017). The positive relationship between N 2 O emissions and soil moisture has been observed in various environments and soil conditions (Marinho et al, 2004; Smith et al, 1998; Smith, Ball, et al, 2003; Schindlbacher et al, 2004; Pattey et al, 2008). Crop species and type of residue crop cover can also affect emissions (Lemke et al, 2018; Parkin & Kaspar, 2006).…”

Section: Introductionmentioning

confidence: 96%

Evaluating Cropland N₂O Emissions and Fertilizer Plant Greenhouse Gas Emissions With Airborne Observations

et al. 2020

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Agricultural activity is a significant source of greenhouse gas emissions. The fertilizer production process emits N2O, CO2, and CH4, and fertilized croplands emit N2O. We present continuous airborne observations of these trace gases in the Lower Mississippi River Basin to quantify emissions from both fertilizer plants and croplands during the early growing season. Observed hourly emission rates from two fertilizer plants are compared with reported inventory values, showing agreement for N2O and CO2 emissions but large underestimation in reported CH4 emissions by up to a factor of 100. These CH4 emissions are consistent with loss rates of 0.6–1.2%. We quantify regional emission fluxes (100 km) of N2O using the airborne mass balance technique, a first application for N2O, and explore linkages to controlling processes. Finally, we demonstrate the ability to use airborne measurements to distinguish N2O emission differences between neighboring fields, determining we can distinguish different emission behaviors of regions on the order of 2.5 km2 with emissions differences of approximately 0.026 μmol m−2 s−1. This suggests airborne approaches such as outlined here could be used to evaluate the impact of different agricultural practices at critical field‐size spatial scales.

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Section: Introductionmentioning

confidence: 96%

Evaluating Cropland N₂O Emissions and Fertilizer Plant Greenhouse Gas Emissions With Airborne Observations

et al. 2020

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“…A peak in emissions occurred in spring after tillage and organic fertilizer application. Pattey et al (2008) investigated N 2 O emissions in a pea-cover crop sequence in Canada with particular regard to spring thawing. Thawing induced emissions were 15% of the total annual emissions.…”

Section: Introductionmentioning

confidence: 99%

Do cover crops enhance soil greenhouse gas losses during high emission moments under temperate Central Europe conditions?

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et al. 2017

Die Bodenkultur: Journal of Land Management, Food and Environment

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SummaryCover cropping is a key agro-environmental measure in Europe. Cover crops may reduce N2O emissions by reducing soil nitrate content, while easily decomposable residues can enhance greenhouse gas losses. In a field study, emissions from the cover cropped fields compared to the fallow at two climatically different sites (semi-arid vs. humid) in Austria were measured with closed chambers and different driving factors were studied. The height of post-cover crop emissions was compared to gaseous losses during the management operations in the subsequent main crop maize. N2O and CO2emissions following the cover crops were low even at high emission moments compared to the losses induced by the main crop management operations. Highest risk of N2O losses was from mustards due to low C/N ratio and possibly as a consequence of glucosinolate decomposition. CO2emissions in the cover cropped plots were generally higher compared to the fallow, indicating an enhanced soil microbiological activity. Dissolved organic carbon was found as a sensitive indicator related to the greenhouse gas emissions. We concluded that the environmental benefits from cover cropping are not achieved at the cost of an enhanced greenhouse gas emission and that pure stands of late sown brassica cover crops should be avoided to prevent any risk of increased N2O losses.

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“…Pattey et al. (2008) also measured similar N 2 O emissions (1.7 kg N 2 O‐N ha −1 ) in eastern Canada even though their field experienced lower temperature. Much lower N 2 O emissions over three consecutive pea cropping seasons (0.03–0.9 kg N 2 O‐N ha −1 ) were observed in France (Jeuffroy et al., 2013).…”

Section: Resultsmentioning

confidence: 66%

“…A pea field in Switzerland with a mean annual temperature of 8.8°C and mean annual precipitation of 1,088 mm emitted 1.4 kg N 2 O-N ha −1 over the growing season in 2019 (Maier et al, 2022), which was close to our results (1.1 kg N 2 O-N ha −1 ). Pattey et al (2008) also measured similar N 2 O emissions (1.7 kg N 2 O-N ha −1 ) in eastern Canada even though their field experienced lower temperature. Much lower N 2 O emissions over three consecutive pea cropping seasons (0.03-0.9 kg N 2 O-N ha −1 ) were observed in France (Jeuffroy et al, 2013).…”

Section: Comparison Of Ec-measured and Flux-footprint-corrected N 2 O...mentioning

confidence: 65%

Estimating Net Carbon and Greenhouse Gas Balances of Potato and Pea Crops on a Conventional Farm in Western Canada

et al. 2023

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As the global population expands rapidly, there is a surge in global food demand. A 100%-110% increase in global crop demand from 2005 to 2050 has been predicted (Tilman et al., 2011). Using a more recent projection with 2010 as a baseline, the total global food demand is expected to increase by up to 56% in 2050 when considering climate change impacts (van Dijk et al., 2021). This drastic increase has exerted considerable pressures on agroecosystems (Kanianska et al., 2016). While agroecosystems play a critical role in global food supply, they also release greenhouse gases (GHGs) into the atmosphere contributing to climate change (Hartmann et al., 2013). Furthermore, global climate change, involving changes in precipitation and an increased frequency of extreme weather events that are likely to occur during this century (Canadell et al., 2021;Seneviratne et al., 2012), presents a significant challenge to agricultural production.

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Spring thaw and growing season N₂O emissions from a field planted with edible peas and a cover crop

Cited by 27 publications

References 36 publications

Evaluating Cropland N₂O Emissions and Fertilizer Plant Greenhouse Gas Emissions With Airborne Observations

Evaluating Cropland N₂O Emissions and Fertilizer Plant Greenhouse Gas Emissions With Airborne Observations

Do cover crops enhance soil greenhouse gas losses during high emission moments under temperate Central Europe conditions?

Estimating Net Carbon and Greenhouse Gas Balances of Potato and Pea Crops on a Conventional Farm in Western Canada

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Spring thaw and growing season N2O emissions from a field planted with edible peas and a cover crop

Cited by 27 publications

References 36 publications

Evaluating Cropland N2O Emissions and Fertilizer Plant Greenhouse Gas Emissions With Airborne Observations

Evaluating Cropland N2O Emissions and Fertilizer Plant Greenhouse Gas Emissions With Airborne Observations

Do cover crops enhance soil greenhouse gas losses during high emission moments under temperate Central Europe conditions?

Estimating Net Carbon and Greenhouse Gas Balances of Potato and Pea Crops on a Conventional Farm in Western Canada

Contact Info

Product

Resources

About

Spring thaw and growing season N₂O emissions from a field planted with edible peas and a cover crop

Evaluating Cropland N₂O Emissions and Fertilizer Plant Greenhouse Gas Emissions With Airborne Observations

Evaluating Cropland N₂O Emissions and Fertilizer Plant Greenhouse Gas Emissions With Airborne Observations