Ammonia and nitrous oxide emissions from two acidic soils of Nova Scotia fertilised with liquid hog manure mixed with or without dicyandiamide

Chemosphere ◽  
2006 ◽  
Vol 65 (8) ◽  
pp. 1381-1387 ◽  
Author(s):  
M.S. Mkhabela ◽  
R. Gordon ◽  
D. Burton ◽  
A. Madani ◽  
W. Hart ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Nova Scotia ◽  
Nitrous Oxide Emissions ◽  
Acidic Soils ◽  
Hog Manure

Nitrous oxide emissions and soil mineral nitrogen status following application of hog slurry and inorganic fertilisers to acidic soils under forage grass

2008 ◽  
Vol 88 (2) ◽  
pp. 145-151 ◽  
Author(s):  
M S Mkhabela ◽  
R. Gordon ◽  
D. Burton ◽  
A. Madani ◽  
W. Hart
Keyword(s):  
Nitrous Oxide ◽  
Field Experiments ◽  
Potassium Nitrate ◽  
The Other ◽  
Nitrous Oxide Emissions ◽  
Forage Grass ◽  
Acidic Soils ◽  
Available N ◽  
The Impact ◽  
Inorganic Fertilisers

Field application of livestock slurry often results in higher nitrous oxide (N2O) emissions than inorganic fertiliser, because slurry contains large amounts of available N and C, and when applied it increases soil water content, thus enhancing denitrification. This study evaluated the impact of hog (Sus scrofa) slurry and inorganic fertilisers on N2O emissions and soil inorganic N. Three short-term (3 wk) field experiments were conducted during summer 2005 on two contrasting acidic soils seeded to forage grass. Treatments included hog slurry (Slurry) at 126 kg N ha-1, potassium nitrate (Nitrate) at 120 kg N ha-1, ammonium sulphate (Ammonium) at 120 kg N ha-1, Carbon (Dextrose) at 500 kg ha-1 and an unamended control (Control). Potassium nitrate increased (P< 0.05) cumulative N2O losses compared with the other treatments. Emissions of N2O from Slurry and Ammonium were similar, but higher than from Dextrose and Control, which were similar. Soil NH4+-N contents for Slurry and Ammonium treatments were generally similar but higher than for the other treatments, particularly during the first and second sampling dates. Soil NO3−-N contents, meanwhile, were higher with the Nitrate treatment compared with the other treatments, especially at the first sampling date. These results imply that N2O production in these acid soils was limited by NO3-availability. Therefore, N2O emissions from these soils can be minimised by using ammonium-based fertilisers including hog slurry rather than nitrate-based fertilisers. Key words: Acidic soils, hog slurry, mineral fertiliser, soil nitrogen, N2O emissions

Mitigation of nitrous oxide emissions from an acidic soil by valorization of industrial waste

2021 ◽  
Author(s):  
Junhui Yin ◽  
Rui Liu ◽  
Qing Chen
Keyword(s):  
Nitrous Oxide ◽  
Soil Ph ◽  
Industrial Waste ◽  
Acidic Soil ◽  
Industrial Wastes ◽  
Nitrous Oxide Emissions ◽  
Acidic Soils ◽  
Untreated Soil ◽  
Incubation Experiments ◽  
Agriculture Sustainability

&lt;p&gt;Increasing evidence suggests that alkaline mineral amendments from industrial wastes (e.g., phosphorus tailing, PT) have potential to ameliorate soil acidification and improve agriculture sustainability. However, the effects of such amendment on nitrous oxide (N&lt;sub&gt;2&lt;/sub&gt;O) production remain elusive. To fill this knowledge gap, an incubation experiments were conducted with an acidic soil of pH 4.80 treated with i) control (CK, no amendments), ii) urea at 60 mg N kg&lt;sup&gt;-1&lt;/sup&gt; (U), iii) 10 g kg&lt;sup&gt;-1&lt;/sup&gt; amendments (S) and iv) 10 g kg&lt;sup&gt;-1&lt;/sup&gt; amendments plus urea at 60 mg N kg&lt;sup&gt;-1&lt;/sup&gt; (S+U). A 184-h experiment was conducted with a robotized incubation system for monitoring real-time gases (O&lt;sub&gt;2&lt;/sub&gt;, N&lt;sub&gt;2&lt;/sub&gt;O, N&lt;sub&gt;2&lt;/sub&gt;, CO&lt;sub&gt;2&lt;/sub&gt;) dynamics. Results from this batch experiment showed that the soil pH was significantly increased with the amendment addition (S and S+U) from 4.80 to above 6.00. Meanwhile, the mineralization, nitrification and denitrification processes were stimulated with the amendment addition. The N&lt;sub&gt;2&lt;/sub&gt;O production was reduced by an average of 65.7% with the amendment addition compared to that without the amendment application. After incubation, higher N&lt;sub&gt;2 &lt;/sub&gt;productions were observed from the soil with amendment addition (S and S+U) than untreated soil (&lt;em&gt;P&lt;/em&gt;&lt;0.05). The findings suggest that the N&lt;sub&gt;2&lt;/sub&gt;O emissions from acidic soils can be considerably controlled by valorization of PT.&lt;/p&gt;

Mitigation of nitrous oxide emissions from acidic soils byBacillus amyloliquefaciens, a plant growth-promoting bacterium

2018 ◽  
Vol 24 (6) ◽  
pp. 2352-2365 ◽  
Author(s):  
Shanghua Wu ◽  
Guoqiang Zhuang ◽  
Zhihui Bai ◽  
Yu Cen ◽  
Shengjun Xu ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Plant Growth ◽  
Nitrous Oxide Emissions ◽  
Acidic Soils ◽  
Plant Growth Promoting ◽  
Growth Promoting

Effects of Straw Recycling of Winter Covering Crop on Methane and Nitrous Oxide Emissions in Paddy Field

2011 ◽  
Vol 37 (9) ◽  
pp. 1666-1675
Author(s):  
Hai-Ming TANG ◽  
Xiao-Ping XIAO ◽  
Wen-Guang TANG ◽  
Guang-Li YANG
Keyword(s):  
Nitrous Oxide ◽  
Paddy Field ◽  
Nitrous Oxide Emissions

scholarly journals Biochar and urease inhibitor mitigate NH3 and N2O emissions and improve wheat yield in a urea fertilized alkaline soil

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Khadim Dawar ◽  
Shah Fahad ◽  
M. M. R. Jahangir ◽  
Iqbal Munir ◽  
Syed Sartaj Alam ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Grain Yield ◽  
Block Design ◽  
N Uptake ◽  
Nitrous Oxide Emissions ◽  
N2o Emissions ◽  
Urease Inhibitor ◽  
Alkaline Soil ◽  
Total N ◽  
N Assimilation

AbstractIn this study, we explored the role of biochar (BC) and/or urease inhibitor (UI) in mitigating ammonia (NH3) and nitrous oxide (N2O) discharge from urea fertilized wheat cultivated fields in Pakistan (34.01°N, 71.71°E). The experiment included five treatments [control, urea (150 kg N ha−1), BC (10 Mg ha−1), urea + BC and urea + BC + UI (1 L ton−1)], which were all repeated four times and were carried out in a randomized complete block design. Urea supplementation along with BC and BC + UI reduced soil NH3 emissions by 27% and 69%, respectively, compared to sole urea application. Nitrous oxide emissions from urea fertilized plots were also reduced by 24% and 53% applying BC and BC + UI, respectively, compared to urea alone. Application of BC with urea improved the grain yield, shoot biomass, and total N uptake of wheat by 13%, 24%, and 12%, respectively, compared to urea alone. Moreover, UI further promoted biomass and grain yield, and N assimilation in wheat by 38%, 22% and 27%, respectively, over sole urea application. In conclusion, application of BC and/or UI can mitigate NH3 and N2O emissions from urea fertilized soil, improve N use efficiency (NUE) and overall crop productivity.

scholarly journals Estimating Agricultural Nitrous Oxide Emissions

Eos ◽  
2008 ◽  
Vol 89 (51) ◽  
pp. 529 ◽  
Author(s):  
Stephen J. Del Grosso ◽  
Tom Wirth ◽  
Stephen M. Ogle ◽  
William J. Parton
Keyword(s):  
Nitrous Oxide ◽  
Nitrous Oxide Emissions

Organic fertility inputs synergistically increase denitrification‐derived nitrous oxide emissions in agroecosystems

2021 ◽  
Author(s):  
Debasish Saha ◽  
Jason P. Kaye ◽  
Arnab Bhowmik ◽  
Mary Ann Bruns ◽  
John M. Wallace ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Nitrous Oxide Emissions
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