Mitigation of nitrous oxide emissions from paddy soil under conventional and no-till practices using nitrification inhibitors during the winter wheat-growing season

2012 ◽  
Vol 49 (6) ◽  
pp. 627-635 ◽  
Author(s):  
Yuchun Ma ◽  
Liying Sun ◽  
Xiaoxu Zhang ◽  
Bo Yang ◽  
Jinyang Wang ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Winter Wheat ◽  
Paddy Soil ◽  
Growing Season ◽  
Nitrous Oxide Emissions ◽  
Nitrification Inhibitors ◽  
No Till

Short-term effects of tillage of long-term no-till on nitrous oxide emissions from two contrasting Canadian prairie soils

2020 ◽  
Vol 100 (4) ◽  
pp. 453-462
Author(s):  
B.M.R. Shahidi ◽  
M. Dyck ◽  
S.S. Malhi ◽  
D. Puurveen
Keyword(s):  
Nitrous Oxide ◽  
Growing Season ◽  
N Fertilizer ◽  
Nitrous Oxide Emissions ◽  
Soil N ◽  
Canadian Prairie ◽  
Prairie Soils ◽  
No Till ◽  
Gray Luvisol

The reduction in net CO2 emissions from increased carbon sequestration in soil and slower decomposition of soil organic matter under most long-term no-till (NT) situations can potentially be offset by a concomitant increase in nitrous oxide (N2O) emissions after tillage reversal on long-term NT soils. The objective of this work was to quantify N2O emissions after tillage reversal on two contrasting western Canadian Prairie soils managed under long-term (∼30 yr) NT. We measured one growing season (2010) of soil N2O emissions on a Black Chernozem and Gray Luvisol at Ellerslie and Breton, AB, respectively, following 30 yr of NT and N fertilizer application at two rates (0 and 100 kg N ha−1) subjected to tillage reversal and no disturbance (i.e., continuing NT). Tillage reversal after long-term NT was associated with higher N2O emissions in both soils but was significant only in the Gray Luvisol with 0 kg N ha−1. Long-term N fertilizer applications of 100 kg N ha−1 were associated with higher growing season soil N2O emissions and higher levels of soil N (i.e., a positive, long-term soil N balance) at both sites. Regardless of tillage, the difference in growing season nitrous oxide emissions from the 0 and 100 kg N ha−1 plots on the Gray Luvisol were much greater than the Black Chernozem. A modest increase in N2O emissions upon tillage reversal on a long-term NT soils could translate to a significant increase to agricultural greenhouse gas inventories in the event of large-scale tillage reversal on agricultural land in western Canada.

scholarly journals Nitrous oxide emissions with enhanced efficiency and conventional urea fertilizers in winter wheat

2021 ◽  
Author(s):  
Haibo An ◽  
Jen Owens ◽  
Brian Beres ◽  
Yuejin Li ◽  
Xiying Hao
Keyword(s):  
Nitrous Oxide ◽  
Winter Wheat ◽  
Nitrification Inhibitor ◽  
Field Trials ◽  
Early Spring ◽  
Nitrous Oxide Emissions ◽  
Nitrification Inhibitors ◽  
Late Fall ◽  
Coated Urea ◽  
Polymer Coated Urea

AbstractOptimizing nitrogen fertilizer management can reduce nitrous oxide (N2O) emissions. This study tested if split applying enhanced efficiency fertilizers (EEFs) resulted in lower N2O emissions than applying equivalent rates of urea at planting. In semiarid southern Alberta, field trials were conducted during three years (planting to harvest) in rainfed winter wheat crops. Annual fertilizer rates ranged from 146 to 176 kg N ha−1. Fertilizer types were urea, and three EEFs (polymer-coated urea, urea with urease and nitrification inhibitors, and urea with a nitrification inhibitor). Each fertilizer type was applied three ways: 100% banded at planting, split applied 30% banded at planting and 70% broadcast in late fall, and split applied 30% banded at planting and 70% broadcast at Feekes growth stage 4 (GS4, post-tiller formation, wheat entering the greening up phase in the early spring). Nitrous oxide was measured using static chambers between sub-weekly and monthly from planting to harvest. Over three years, cumulative N2O emissions ranged from 0.16 to 1.32 kg N ha−1. This was equivalent to emissions factors between 0.009 and 0.688%. Cumulative N2O emissions and emissions factors did not differ between fertilizer types, but they were lower when fertilizer was split applied at GS4 compared to in late fall (P ≤ 0.10). Our study suggests that EEFs do not reduce N2O emissions from rainfed winter wheat crops, but a well-timed split application with a majority of fertilizer applied after winter can minimize N2O emissions.

Nitrous oxide emissions from red clover and winter wheat residues depend on interacting effects of distribution, soil N availability and moisture level

2021 ◽  
Author(s):  
Arezoo Taghizadeh-Toosi ◽  
Baldur Janz ◽  
Rodrigo Labouriau ◽  
Jørgen E. Olesen ◽  
Klaus Butterbach-Bahl ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Winter Wheat ◽  
Red Clover ◽  
Moisture Level ◽  
Nitrous Oxide Emissions ◽  
N Availability ◽  
Soil N ◽  
Soil N Availability

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

Mechanical insights into the effect of fluctuation in soil moisture on nitrous oxide emissions from paddy soil

2016 ◽  
Vol 15 (2) ◽  
pp. 359-369 ◽  
Author(s):  
Lan Ma ◽  
Yi Cheng ◽  
Jinyang Wang ◽  
Xiaoyuan Yan
Keyword(s):  
Nitrous Oxide ◽  
Soil Moisture ◽  
Paddy Soil ◽  
Nitrous Oxide Emissions

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

Winter wheat yield and nitrous oxide emissions in response to cowpea-based green manure and nitrogen fertilization

2019 ◽  
Vol 56 (2) ◽  
pp. 239-254 ◽  
Author(s):  
Tanka P. Kandel ◽  
Prasanna H. Gowda ◽  
Brian K. Northup ◽  
Alexandre C. Rocateli
Keyword(s):  
Nitrous Oxide ◽  
Winter Wheat ◽  
Green Manure ◽  
Inorganic Nitrogen ◽  
Wheat Yield ◽  
Nitrous Oxide Emissions ◽  
Soil Mineral N ◽  
Soil Mineral ◽  
Mineral N ◽  
Winter Wheat Yield

AbstractThe aim of this study was to compare the effects of cowpea green manure and inorganic nitrogen (N) fertilizers on yields of winter wheat and soil emissions of nitrous oxide (N2O). The comparisons included cowpea grown solely as green manure where all biomass was terminated at maturity by tillage, summer fallow treatments with 90 kg N ha−1 as urea (90-N), and no fertilization (control) at planting of winter wheat. Fluxes of N2O were measured by closed chamber methods after soil incorporation of cowpea in autumn (October–November) and harvesting of winter wheat in summer (June–August). Growth and yields of winter wheat and N concentrations in grain and straw were also measured. Cowpea produced 9.5 Mg ha−1 shoot biomass with 253 kg N ha−1 at termination. Although soil moisture was favorable for denitrification after soil incorporation of cowpea biomass, low concentrations of soil mineral N restricted emissions of N2O from cowpea treatment. However, increased concentrations of soil mineral N and large rainfall-induced emissions were recorded from the cowpea treatment during summer. Growth of winter wheat, yield, and grain N concentrations were lowest in response to cowpea treatment and highest in 90-N treatment. In conclusion, late terminated cowpea may reduce yield of winter wheat and increase emissions of N2O outside of wheat growing seasons due to poor synchronization of N mineralization from cowpea biomass with N-demand of winter wheat.

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