Nitrous oxide emissions are greater in silt loam soils with a legacy of manure application than without

Nitrous oxide emissions are highly episodic and to accurately quantify them annually, continuous measurements are required. A tower-based micrometeorological measuring system was used on a commercial cattle farm near Cô teau-du-Lac, (QC, Canada) during 2003 and 2004 to quantify N2O emissions associated with the production of edible peas. It was equipped with an ultrasonic anemometer and a fast-response closed-path tunable diode laser. Continuous measurements of N2O fluxes were made during the spring thaw following corn cultivation in summer 2002, then during an edible pea growing season, followed by cattle manure application, cover crop planting and through until after the next spring ploughing. The cumulative N2O emissions of 0.7 kg N2O-N ha-1 during the initial snowmelt period following corn harvest were lower than expected. Sustained and small N2O emissions totalling 1.7 kg N2O-N ha-1 were observed during the growing season of the pea crop. Solid cattle manure applied after the pea harvest generated the largest N2O emissions (1.9 kg N2O-N ha-1 over 10 d) observed during the entire sampling period. N2O emissions associated with the cover crop in the fall were mostly influenced by manure application and totalled 0.8 kg N2O-N ha-1. For the subsequent spring thaw period, N2O emissions were 0.8 kg N2O-N ha-1. This represents approximately 15% of the annual emissions for the edible pea-cover crop system, which totalled 5.6 kg N2O-N ha-1 over the measuring periods. There was little difference in spring thaw N2O emissions between the two growing seasons of corn and edible pea-cover crop. Key words: Nitrous oxide emissions, legumes, snowmelt, dairy manure, tunable diode laser, flux tower

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Assessing the effects of manure application rate and timing on nitrous oxide emissions from managed grasslands under contrasting climate in Canada

The Science of The Total Environment ◽

10.1016/j.scitotenv.2019.135374 ◽

2020 ◽

Vol 716 ◽

pp. 135374 ◽

Cited By ~ 3

Author(s):

Wentian He ◽

B. Dutta ◽

B.B. Grant ◽

M.H. Chantigny ◽

D. Hunt ◽

...

Keyword(s):

Nitrous Oxide ◽

Application Rate ◽

Nitrous Oxide Emissions ◽

Manure Application

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Crop Yield, Nitrous Oxide Emissions following Swine Manure Application

CSA News ◽

10.1002/csan.20009 ◽

2020 ◽

Vol 65 (1) ◽

pp. 7-8

Author(s):

Kaine Korzekwa

Keyword(s):

Nitrous Oxide ◽

Crop Yield ◽

Swine Manure ◽

Nitrous Oxide Emissions ◽

Manure Application

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Evaluating Greenhouse Gas Emissions in Promising Tillage and Manure Application Practices at Borderview Farm

10.32747/2017.6957453.ch ◽

2017 ◽

Author(s):

Carol Adair ◽

Heather Darby ◽

Tyler Goeschel ◽

Lindsay Barbieri ◽

Alissa White

Keyword(s):

Carbon Dioxide ◽

Nitrous Oxide ◽

Greenhouse Gas ◽

Research Team ◽

Greenhouse Gas Emission ◽

Nitrous Oxide Emissions ◽

Gas Emission ◽

Manure Application ◽

Measuring Device ◽

No Till

A research team at UVM, led by Dr. Carol Adair and Dr. Heather Darby, is evaluating the benefits and drawbacks of four different tillage approaches (conventional, strip, vertical, and no till) and two different methods of manure application (broadcast and injection). The goal is to determine the practices best suited for reducing greenhouse gas emission, improving carbon storage and limiting nitrogen losses. The team measures carbon dioxide and nitrous oxide emissions from the treatments every two weeks or more frequently after events (large rainfall, manure application) using a measuring device called photoacoustic multigas monitor.

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Control and reduction of methane and nitrous oxide emissions within animal husbandry and manure application

Non-CO2 Greenhouse Gases: Scientific Understanding, Control and Implementation ◽

10.1007/978-94-015-9343-4_52 ◽

2000 ◽

pp. 323-324

Author(s):

Matthias Plöchl ◽

Werner Berg

Keyword(s):

Nitrous Oxide ◽

Animal Husbandry ◽

Nitrous Oxide Emissions ◽

Manure Application

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Effect of variability in soil properties plus model complexity on predicting topsoil water content and nitrous oxide emissions

Soil Research ◽

10.1071/sr18080 ◽

2018 ◽

Vol 56 (8) ◽

pp. 810 ◽

Cited By ~ 2

Author(s):

Iris Vogeler ◽

Rogerio Cichota

Keyword(s):

Nitrous Oxide ◽

Soil Properties ◽

Water Content ◽

Soil Water ◽

Soil Water Content ◽

Soil Profile ◽

Nitrous Oxide Emissions ◽

Soil Types ◽

N2o Emissions ◽

Silt Loam

Despite the importance of soil physical properties on water infiltration and redistribution, little is known about the effect of variability in soil properties and its consequent effect on contaminant loss pathways. To investigate the effects of uncertainty and heterogeneity in measured soil physical parameters on the simulated movement of water and the prediction of nitrous oxide (N2O) emissions, we set up the Agricultural Production Systems sIMulator (APSIM) for different soil types in three different regions of New Zealand: the Te Kowhai silt loam and the Horotiu silt loam in the Waikato region, and the Templeton silt loam in the Canterbury region, and the Otokia silt loam and the Wingatui silt loam in the Otago region. For each of the soil types, various measured soil profile descriptions, as well as those from a national soils database (S-map) were used when available. In addition, three different soil water models in APSIM with different complexities (SWIM2, SWIM3, and SoilWat) were evaluated. Model outputs were compared with temporal soil water content measurements within the top 75mm at the various experimental sites. Results show that the profile description, as well as the soil water model used affected the prediction accuracy of soil water content. The smallest difference between soil profile descriptions was found for the Templeton soil series, where the model efficiency (NSE) was positive for all soil profile descriptions, and the RMSE ranged from 0.055 to 0.069m3/m3. The greatest difference was found for the Te Kowhai soil, where only one of the descriptions showed a positive NSE, and the other two profile descriptions overestimated measured topsoil water contents. Furthermore, it was shown that the soil profile description highly affects N2O emissions from urinary N deposited during animal grazing. However, the relative difference between the emissions was not always related to the accuracy of the measured soil water content, with soil organic carbon content also affecting emissions.

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Contribution and Driving Mechanism of N2O Emission Bursts in a Chinese Vegetable Greenhouse after Manure Application and Irrigation

Sustainability ◽

10.3390/su11061624 ◽

2019 ◽

Vol 11 (6) ◽

pp. 1624

Author(s):

Wenchao Cao ◽

Su Liu ◽

Zhi Qu ◽

He Song ◽

Wei Qin ◽

...

Keyword(s):

Nitrous Oxide ◽

Soil Properties ◽

N2o Emission ◽

Field Monitoring ◽

Nitrous Oxide Emissions ◽

Integrated Analysis ◽

N2o Emissions ◽

Driving Mechanism ◽

Manure Application ◽

Greenhouse Vegetable

Solar greenhouse vegetable fields have been found to be hotspots of nitrous oxide (N2O) emissions in China, mainly due to excessive manure application and irrigation. Pulses of N2O emissions have been commonly reported by field monitoring works conducted in greenhouse fields, though their significance regarding total N2O emissions and the driving mechanism behind them remain poorly understood. N2O fluxes were monitored in situ using a static opaque chamber method in a typical greenhouse vegetable field. Then, laboratory incubations were conducted under different soil moisture and manure application gradients to monitor nitrous oxide emissions and related soil properties, using a robotized incubation system. Field monitoring showed that the occurrence of clear N2O emission bursts closely followed fertilization and irrigation events, accounting for 76.7% of the annual N2O efflux. The soil N2O flux increased exponentially with the water-filled pore space (WFPS), causing extremely high N2O emissions when the WFPS was higher than 60%. During the lab incubation, emission bursts led to N2O peaks within 40 h, synchronously changing with the transit soil NO2−. An integrated analysis of the variations in the gas emission and soil properties indicated that the denitrification of transit NO2− accumulation was the major explanation for N2O emission bursts in the greenhouse filed. Nitrous oxide emission bursts constituted the major portion of the N2O emissions in the Chinese greenhouse soils. Nitrite (NO2−) denitrification triggered by fertilization and irrigation was responsible for these N2O emission pulses. Our results clarified the significance and biogeochemical mechanisms of N2O burst emissions; this knowledge could help us to devise and enact sounder N2O mitigation measures, which would be conducive to sustainable development in vegetable greenhouse fields.

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