Enhanced‐efficiency nitrogen fertilizers reduce winter losses of nitrous oxide, but not of ammonia, from no‐till soil in a subtropical agroecosystem

2020 ◽  
Vol 36 (3) ◽  
pp. 420-428
Author(s):  
Ricardo Henrique Ribeiro ◽  
Marcos Renan Besen ◽  
Priscila Luzia Simon ◽  
Cimelio Bayer ◽  
Jonatas Thiago Piva
Keyword(s):  
Nitrous Oxide ◽  
Nitrogen Fertilizers ◽  
No Till ◽  
Winter Losses

Nitrous oxide emissions from manured, no-till corn systems

2021 ◽  
Vol 119 (3) ◽  
pp. 405-421
Author(s):  
María A. Ponce de León ◽  
Curtis J. Dell ◽  
Heather D. Karsten
Keyword(s):  
Nitrous Oxide ◽  
Nitrous Oxide Emissions ◽  
No Till

Modeling nitrous oxide mitigation potential of enhanced efficiency nitrogen fertilizers from agricultural systems

2021 ◽  
pp. 149342
Author(s):  
Ram B. Gurung ◽  
Stephen M. Ogle ◽  
F. Jay Breidt ◽  
William J. Parton ◽  
Stephen J. Del Grosso ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Nitrogen Fertilizers ◽  
Agricultural Systems ◽  
Mitigation Potential ◽  
Nitrous Oxide Mitigation

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

Nitrous Oxide: Trends and Global Mass Balance Over the Last 3000 Years

1988 ◽  
Vol 10 ◽  
pp. 73-79 ◽  
Author(s):  
M.A.K. Khalil ◽  
R.A. Rasmussen
Keyword(s):  
Nitrous Oxide ◽  
Fossil Fuels ◽  
Ice Cores ◽  
Average Concentration ◽  
Rate Of Change ◽  
Nitrogen Fertilizers ◽  
Anthropogenic Sources ◽  
Polar Regions ◽  
Atmospheric Concentration ◽  
Slow Increase

We analyzed ice cores from both northern and southern polar regions to determine the concentrations of nitrous oxide in the pre-industrial and ancient atmospheres from about 150 years to 3000 yearsB.P.We found that the pre-industrial concentration of nitrous oxide remained constant over the period we studied and that the average atmospheric concentration was 285 ± 1 ppb volume (90% confidence limits), representing about 2100 Tg (2100 × 1012g) of N20 in the atmosphere, whereas the average concentration in 1984 was about 307 ppb volume or 2260 Tg. This is a change of 22 ppb volume (160 Tg), or about 8%, between pre-industrial and present times. Now the rate of change is between 0.7 and 0.9 ppb volume/year or 5 and 6.5 Tg/year, which is a slow increase of about 0.3% per year. The changes observed are probably caused by increasing use of fossil fuels, particularly coal and oil, and perhaps to a lesser extent by the use of nitrogen fertilizers in recent years. The atmospheric lifetime of N2O is probably between 100 and 150 years. The pre-industrial concentrations, present levels, and a lifetime of 100 years are consistent with natural sources, mostly soils and oceans, of about 22 Tg/year and the present anthropogenic sources of about 8.7 Tg/year. In the next 50 years we expect nitrous oxide levels to reach 360–390 ppb volume, or about 16–25% more than present.

Nitrous Oxide Emissions from a Golf Course Fairway and Rough after Application of Different Nitrogen Fertilizers

2016 ◽  
Vol 45 (5) ◽  
pp. 1788-1795 ◽  
Author(s):  
Katrina L. Gillette ◽  
Yaling Qian ◽  
Ronald F. Follett ◽  
Stephen Del Grosso
Keyword(s):  
Nitrous Oxide ◽  
Nitrogen Fertilizers ◽  
Nitrous Oxide Emissions ◽  
Golf Course

Tillage effects on N2O emission from soils under corn and soybeans in Eastern Canada

2008 ◽  
Vol 88 (2) ◽  
pp. 153-161 ◽  
Author(s):  
E G Gregorich ◽  
P. Rochette ◽  
P. St-Georges ◽  
U F McKim ◽  
C. Chan
Keyword(s):  
Nitrous Oxide ◽  
Agricultural Soils ◽  
N2o Emission ◽  
N Fixation ◽  
Eastern Canada ◽  
N Losses ◽  
Biological N Fixation ◽  
No Till ◽  
Tillage System ◽  
Glycine Max L

The ways in which agricultural soils are managed influence the production and emission of nitrous oxide (N2O). A field study was undertaken in 2003, 2004, and 2005 to quantify and evaluate N2O emission from tilled and no-till soils under corn (Zea maysL.) and soybeans (Glycine max L. Merr) in Ontario. Overall, N2O emission was lowest in 2003, the driest and coolest of the 3 yr. In 2004, the significantly larger annual N2O emission from no-till soils and soils under corn was attributed to an episode of very high N2O emission following the application of fertilizer during a period of wet weather. That the N loss by N2O emission occurred only in no-till soils and was large and long-lasting (~4 wk) confirms the strong effect that management has in reducing fertilizer N losses. In 2005, tilled soils had significantly larger N2O emission than no-till soils, most of which was emitted before the end of June. Because the tilled soils were better aerated , nitrification was likely the primary process contributing to the larger emission. Relatively low N2O emission from soybeans suggests biological N fixation does not appear to contribute substantially to the annual N2O emission. Further study of methods to reduce N2O emission in agricultural systems should focus on improving N use efficiency within a particular tillage system rather than looking to differences between tillage systems. Key words: Tillage, corn, soybeans, nitrogen, nitrous oxide, biogenic gas emission, nitrification, denitrification, fertilization

Nitrous oxide production from granular nitrogen fertilizers applied to a silt loam soil

2003 ◽  
Vol 83 (5) ◽  
pp. 521-532 ◽  
Author(s):  
M. Tenuta and E. G. Beauchamp
Keyword(s):  
Nitrous Oxide ◽  
Field Experiment ◽  
Laboratory Experiment ◽  
Laboratory Experiments ◽  
N Fertilizer ◽  
Nitrogen Fertilizers ◽  
Silt Loam ◽  
N Fertilizers ◽  
Oxide Production ◽  
Nitrous Oxide Production

One field and two laboratory experiments were conducted to determine the relative magnitude and pattern of N2O production from several granular N fertilizers including urea, ammonium nitrate, calcium nitrate, ammonium sulfate and, in a laboratory experiment, monoammonium and diammonium phosphates. Several parameters, in particular soil water content, were studied for their roles in N2O production with these fertilizers. The field experiment was conducted at the Elora Research Station (20 km north of Guelph) on Conestoga silt loam during July on a site previously cropped to barley. Three methods were employed to assess N2O production following N fertilizer treatments in the field experiment, viz., soil cover, soil core and profile distribution. The data with each method revealed that incorporated urea produced the greatest quantity of N2O especially in the first few days following application. Shortly after urea application and incorporation (10 cm), N2O was detected at a depth of 50 cm indicating gas produced in the tilled layer was transported to lower depths. Data obtained with the intact core method showed that nitrification preceeded denitrification as the source of N2O produced during a wetting event as air-filled porosity decreased from 65% to less than 50%, respectively. The laboratory experiments showed that under aerobic conditions N2O production was generally greater with urea than the other N fertilizers. The greater production of N2O with urea was associated with N2O-accumulation. In the second laboratory experiment, saturating the soil following 14 d of aerobic incubation showed enhanced N2O production with ammonium phosphate fertilizers. Our findings indicate refinement of methods to predict N2O emissions based on N fertilizer source use and moisture can reduce uncertainties in national estimates of N2O emissions from agricultural soils. Key words: Nitrous oxide production, nitrogen fertilizers, soil atmosphere profiles, nitrification, denitrification, air-filled porosity

scholarly journals Nitrous Oxide: Trends and Global Mass Balance Over the Last 3000 Years

1988 ◽  
Vol 10 ◽  
pp. 73-79 ◽  
Author(s):  
M.A.K. Khalil ◽  
R.A. Rasmussen
Keyword(s):  
Nitrous Oxide ◽  
Fossil Fuels ◽  
Ice Cores ◽  
Average Concentration ◽  
Rate Of Change ◽  
Nitrogen Fertilizers ◽  
Anthropogenic Sources ◽  
Polar Regions ◽  
Atmospheric Concentration ◽  
Slow Increase

We analyzed ice cores from both northern and southern polar regions to determine the concentrations of nitrous oxide in the pre-industrial and ancient atmospheres from about 150 years to 3000 yearsB.P.We found that the pre-industrial concentration of nitrous oxide remained constant over the period we studied and that the average atmospheric concentration was 285 ± 1 ppb volume (90% confidence limits), representing about 2100 Tg (2100 × 1012g) of N20 in the atmosphere, whereas the average concentration in 1984 was about 307 ppb volume or 2260 Tg. This is a change of 22 ppb volume (160 Tg), or about 8%, between pre-industrial and present times. Now the rate of change is between 0.7 and 0.9 ppb volume/year or 5 and 6.5 Tg/year, which is a slow increase of about 0.3% per year. The changes observed are probably caused by increasing use of fossil fuels, particularly coal and oil, and perhaps to a lesser extent by the use of nitrogen fertilizers in recent years. The atmospheric lifetime of N2O is probably between 100 and 150 years. The pre-industrial concentrations, present levels, and a lifetime of 100 years are consistent with natural sources, mostly soils and oceans, of about 22 Tg/year and the present anthropogenic sources of about 8.7 Tg/year. In the next 50 years we expect nitrous oxide levels to reach 360–390 ppb volume, or about 16–25% more than present.

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