scholarly journals Soil Physical Properties and Nitrous Oxide Emission from Agricultural Soils

Author(s):  
Natalya P. ◽  
Elena Y. ◽  
Sergey V. ◽  
Eugene V. Balashov
2018 ◽  
Author(s):  
G.L. Velthof ◽  
◽  
R.P.J.J. Rietra ◽  

2015 ◽  
Vol 7 (1) ◽  
pp. 62
Author(s):  
Junliang Liu ◽  
Kamal Tawfiq ◽  
Gang Chen

Pedosphere ◽  
2022 ◽  
Vol 32 (1) ◽  
pp. 3-14
Author(s):  
Yilin DU ◽  
Xinyu GUO ◽  
Jinxing LI ◽  
Yuankun LIU ◽  
Jipeng LUO ◽  
...  

2004 ◽  
Vol 84 (3) ◽  
pp. 339-352 ◽  
Author(s):  
Philippe Rochette, Régis R. Simard ◽  
Noura Ziadi, Michel C. Nolin ◽  
Athyna N. Cambouris

Nitrous oxide production and emission in agricultural soils are often influenced by soil physical properties and mineral N content. An experiment was initiated on a commercial farm located in the St. Lawrence Lowlands to measure the effects of recommended (150 kg N ha-1) and excessive (250 kg N ha-1) rates of anhydrous ammonia on atmospheric composition (O2, CO2, CH4 and N2O) and N2O emissions in soils of contrasting textures (sandy loam, clay loam and clay) cropped to corn. N2O emissions and soil temperature, water content and atmospheric composition were measured from post-harvest tillage to the first snowfall during the first year (2000), and from spring thaw to mid-July during the following 2 yr. Episodes of high N2O concentrations and surface emissions coincided with periods of high soil water content shortly following rainfall events when soil O2 concentrations were lowest. The convergence of indicators of restricted soil aeration at the time of highest N2O production suggested that denitrification was a major contributor to N2O emissions even in soils receiving an NH4-based fertilizer. Soil texture had a significant influence on soil N2O concentration and emission rates on several sampling dates. However, the effect was relatively small and it was not consistent, likely because of complex interactions between soil physical properties and N2O production, consumption and diffusion processes. Nitrous oxide emissions during the study were not limited by soil N availability as indicated by similar fluxes at recommended and excessive rates of anhydrous ammonia. Finally, greater N2O emissions in 2001 than in 2002 stress the importance of multiyear studies to evaluate the effect of annual weather conditions on soil N2O dynamics. Key words: Greenhouse gasses, denitrification


2017 ◽  
Vol 236 ◽  
pp. 88-98 ◽  
Author(s):  
Anaïs Charles ◽  
Philippe Rochette ◽  
Joann K. Whalen ◽  
Denis A. Angers ◽  
Martin H. Chantigny ◽  
...  

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