Reducing nitrous oxide emissions from a maize-wheat sequence by decreasing soil nitrate concentration: effects of split application of pig slurry and dicyandiamide

2015 ◽  
Vol 66 (2) ◽  
pp. 359-368 ◽  
Author(s):  
C. Aita ◽  
J. Schirmann ◽  
S. B. Pujol ◽  
S. J. Giacomini ◽  
P. Rochette ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Nitrate Concentration ◽  
Nitrous Oxide Emissions ◽  
Soil Nitrate ◽  
Pig Slurry ◽  
Split Application ◽  
Concentration Effects

Injection of Dicyandiamide-Treated Pig Slurry Reduced Ammonia Volatilization without Enhancing Soil Nitrous Oxide Emissions from No-Till Corn in Southern Brazil

2014 ◽  
Vol 43 (3) ◽  
pp. 789-800 ◽  
Author(s):  
Celso Aita ◽  
Rogério Gonzatto ◽  
Ezequiel C. C. Miola ◽  
Daniela B. dos Santos ◽  
Philippe Rochette ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Ammonia Volatilization ◽  
Nitrous Oxide Emissions ◽  
Pig Slurry ◽  
Southern Brazil ◽  
No Till

Simulation of long-term changes in soil organic carbon and nitrous oxide emissions from permanent grass silage using the DNDC model

2020 ◽  
Author(s):  
Mohammad I. Khalil ◽  
Bruce A. Osborne
Keyword(s):  
Nitrous Oxide ◽  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Nitrous Oxide Emissions ◽  
Spatial And Temporal Variability ◽  
Pig Slurry ◽  
Grass Silage ◽  
Nitrogen Inputs ◽  
Annual Changes ◽  
The Impact

<p>Quantification and reporting of soil organic carbon density (SOCρ) changes and greenhouse gases (GHGs), particularly nitrous oxide (N<sub>2</sub>O), emissions from agricultural soils using higher tiers remain a key challenge. Modelling approaches can provide largescale land use and management coverage whilst minimizing spatial and temporal variability. Identification of an advanced tool to simulate the net balance of SOC and GHG for mitigation, offsetting and policy formulation is a global concern. We tested the widely used latest version of Denitrification-Decomposition (DNDC95) model, a process-based one, to simulate both SOCρ and N<sub>2</sub>O emissions and their annual changes over 45 years. The moist temperate grass silage was managed with inorganic fertilizer as urea and organic ones as cattle and pig slurry applied at low, medium and high rates. The model performed well for urea, cattle slurry and pig slurry to predict both SOCρ and N<sub>2</sub>O emissions. The measured data for SOCρ at a 0-15 cm depth for unfertilized and urea-fertilized fields (73-77 t C ha<sup>-1</sup>) were significantly higher than the simulated ones (54-55). However, the model-estimates showed good agreement with the measured values (R<sup>2 </sup>= 0.66) and revealed increased C sequestration with increasing added-C (0.46±0.06 vs. 0.37±0.01 t C ha<sup>-1 </sup>yr<sup>-1</sup>). The model simulated N<sub>2</sub>O emissions well and the resulted emission factors (EFs) estimated on average to be 0.35 ± 0.02, 1.80 ± 0.28 and 1.53 ± 0.41%, respectively, which are close to national and IPCC estimates. Variations in the simulated-SOCρ and derived-EFs could be explained mainly by differences in nitrogen inputs (49%) and added-C (62%), respectively, where the impact of rainfall (15-16%) and temperature (10-11%) was identical. Generally, SOCρ and N<sub>2</sub>O EFs were sensitive to soil texture, pH, bulk density and organic carbon (R<sup>2 </sup>= 0.77-0.99) but annual changes in SOCρ decreased with the latter two (R<sup>2 </sup>= -0.99). Application of animal slurry during autumn demonstrated more C being sequestered in the clay loam soil (Dystric Gleysol) and strategic replacement of slurry either after the second or third silage cuts by urea decreased N<sub>2</sub>O EFs significantly. Results  imply that the updated DNDC95 could provide an accurate representation of the key drivers influencing both SOCρ and N<sub>2</sub>O fluxes in temperate grass silage.</p>

Carbon Dioxide and Nitrous Oxide Emissions following Fall and Spring Applications of Pig Slurry to an Agricultural Soil

2004 ◽  
Vol 68 (4) ◽  
pp. 1410-1420 ◽  
Author(s):  
Philippe Rochette ◽  
Denis A. Angers ◽  
Martin H. Chantigny ◽  
Normand Bertrand ◽  
Denis Côté
Keyword(s):  
Carbon Dioxide ◽  
Nitrous Oxide ◽  
Agricultural Soil ◽  
Nitrous Oxide Emissions ◽  
Pig Slurry

Effect of split application of nitrogen on nitrous oxide emissions from plastic mulching maize in the semiarid Loess Plateau

2016 ◽  
Vol 220 ◽  
pp. 21-27 ◽  
Author(s):  
Shaojie Wang ◽  
Shasha Luo ◽  
Xiaosha Li ◽  
Shanchao Yue ◽  
Yufang Shen ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Loess Plateau ◽  
Nitrous Oxide Emissions ◽  
Split Application ◽  
Plastic Mulching

scholarly journals Gaseous nitrogen losses from pig slurry fertilisation: can they be reduced with additives in a wheat crop?

2021 ◽  
Vol 19 (3) ◽  
pp. e0302
Author(s):  
Noemí Mateo-Marín ◽  
Ramón Isla ◽  
Dolores Quílez
Keyword(s):  
Nitrous Oxide ◽  
Nitrification Inhibitor ◽  
Nitrous Oxide Emissions ◽  
Wheat Crop ◽  
N2o Emissions ◽  
Pig Slurry ◽  
Gaseous Nitrogen ◽  
N Losses ◽  
Ammonia Volatilisation ◽  
Irrigated Wheat

Aim of the study: The use of pig slurry as fertiliser is associated with gaseous nitrogen (N) losses, especially ammonia (NH3) and nitrous oxide (N2O), leading to environmental problems and a reduction of its fertiliser value. This study evaluates, in an irrigated wheat crop, the effect of different additives mixed with pig slurry to decrease NH3 and N2O losses.Area of study: Middle Ebro valley, SpainMaterials and methods: The treatments were: i) non-N-fertilised control, ii) pig slurry (PS), iii) pig slurry with the urease inhibitor monocarbamide dihydrogen sulphate (PS-UI), iv) pig slurry with a microbial activator in development (PS-A), and v) pig slurry with the nitrification inhibitor 3,4-dimethylpyrazole phosphate (PS-NI). Pig slurry was applied at a target rate of 120 kg NH4+-N ha-1. Ammonia volatilisation was measured using semi-opened static chambers after treatments application at presowing 2016 and side-dressing 2017. Nitrous oxide emissions were measured using static closed chambers after treatments application at the 2017 and 2018 side-dressing.Main results: Ammonia volatilisation was estimated to be 7-9% and 19-23% of NH4+-N applied after presowing and side-dressing applications, respectively. Additives were not able to reduce NH3 emissions in any application moment. PS-NI was the only treatment being effective in reducing N2O emissions, 70% respect to those in PS treatment. Crop yield parameters were not affected by the application of the additives because of the no effect of additives controlling NH3 losses and the low contribution of N2O losses to the N balance (<1 kg N2O-N ha-1).Research highlights: The use of 3,4-dimethylpyrazole phosphate would be recommended from an environmental perspective, although without grain yield benefits.

scholarly journals Short-term nitrous oxide emissions from pasture soil as influenced by urea level and soil nitrate

2004 ◽  
Vol 267 (1-2) ◽  
pp. 117-127 ◽  
Author(s):  
S. O. Petersen ◽  
S. Stamatiadis ◽  
C. Christofides
Keyword(s):  
Nitrous Oxide ◽  
Nitrous Oxide Emissions ◽  
Soil Nitrate ◽  
Short Term ◽  
Urea Level ◽  
Pasture Soil
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