Effects of straw incorporation along with microbial inoculant on methane and nitrous oxide emissions from rice fields

2015 ◽  
Vol 518-519 ◽  
pp. 209-216 ◽  
Author(s):  
Gang Liu ◽  
Haiyang Yu ◽  
Jing Ma ◽  
Hua Xu ◽  
Qinyan Wu ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Rice Fields ◽  
Nitrous Oxide Emissions ◽  
Microbial Inoculant ◽  
Straw Incorporation

scholarly journals Climate Overrides Effects of Fertilizer and Straw Management as Controls of Nitrous Oxide Emissions After Oilseed Rape Harvest

2022 ◽  
Vol 9 ◽  
Author(s):  
Sarah Köbke ◽  
Hongxing He ◽  
Matthias Böldt ◽  
Haitao Wang ◽  
Mehmet Senbayram ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Oilseed Rape ◽  
Cover Crops ◽  
Measured Data ◽  
N Fertilizer ◽  
Environmental Data ◽  
Nitrous Oxide Emissions ◽  
Management Options ◽  
Post Harvest ◽  
Straw Incorporation

Oilseed rape (Brassica napus L.) is an important bioenergy crop that contributes to the diversification of renewable energy supply and mitigation of fossil fuel CO2 emissions. Typical oilseed rape crop management includes the use of nitrogen (N) fertilizer and the incorporation of oilseed rape straw into soil after harvest. However, both management options risk increasing soil emissions of nitrous oxide (N2O). The aim of this 2-years field experiment was to identify the regulating factors of N cycling with emphasis on N2O emissions during the post-harvest period. As well as the N2O emission rates, soil ammonia (NH4+) and nitrate (NO3−) contents, crop residue and seed yield were also measured. Treatments included variation of fertilizer (non-fertilized, 90 and 180 kg N ha−1) and residue management (straw remaining, straw removal). Measured N2O emission data showed large intra- and inter-annual variations ranging from 0.5 (No-fert + str) to 1.0 kg N2O-N ha−1 (Fert-180 + str) in 2013 and from 4.1 (Fert-90 + str) to 7.3 kg N2O-N ha−1 (No-fert + str) in 2014. Cumulative N2O emissions showed that straw incorporation led to no difference or slightly reduced N2O emissions compared with treatments with straw removal, while N fertilization has no effect on post-harvest N2O emissions. A process-based model, CoupModel, was used to explain the large annual variation of N2O after calibration with measured environmental data. Both modeled and measured data suggest that soil water-filled pore space and temperature were the key factors controlling post-harvest N2O emissions, even though the model seemed to show a higher N2O response to the N fertilizer levels than our measured data. We conclude that straw incorporation in oilseed rape cropping is environmentally beneficial for mitigating N2O losses. The revealed importance of climate in regulating the emissions implies the value of multi-year measurements. Future studies should focus on new management practices to mitigate detrimental effects caused by global warming, for example by using cover crops.

Nitrous oxide emissions in response to straw incorporation is regulated by historical fertilization

2020 ◽  
Vol 266 ◽  
pp. 115292
Author(s):  
Lei Wu ◽  
Ronggui Hu ◽  
Shuirong Tang ◽  
Muhammad Shaaban ◽  
Wenju Zhang ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Nitrous Oxide Emissions ◽  
Straw Incorporation

Methane and nitrous oxide emissions from flooded rice fields as affected by water and straw management between rice crops

Geoderma ◽  
2014 ◽  
Vol 235-236 ◽  
pp. 355-362 ◽  
Author(s):  
Bjoern Ole Sander ◽  
Marianne Samson ◽  
Roland J. Buresh
Keyword(s):  
Nitrous Oxide ◽  
Rice Fields ◽  
Nitrous Oxide Emissions ◽  
Straw Management ◽  
Flooded Rice

Mitigation of methane and nitrous oxide emissions from drained irrigated rice fields

Chemosphere ◽  
2005 ◽  
Vol 59 (11) ◽  
pp. 1547-1556 ◽  
Author(s):  
S. Towprayoon ◽  
K. Smakgahn ◽  
S. Poonkaew
Keyword(s):  
Nitrous Oxide ◽  
Rice Fields ◽  
Nitrous Oxide Emissions ◽  
Irrigated Rice

Effects of increased temperatures and rice straw incorporation on methane and nitrous oxide emissions in a greenhouse experiment with rice

2016 ◽  
Vol 67 (6) ◽  
pp. 868-880 ◽  
Author(s):  
Y. K. Gaihre ◽  
R. Wassmann ◽  
G. Villegas-pangga ◽  
J. Sanabria ◽  
E. Aquino ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Rice Straw ◽  
Greenhouse Experiment ◽  
Nitrous Oxide Emissions ◽  
Straw Incorporation

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
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