Greenhouse Gas (CO2 AND N2O) Emissions from Soils: A Review

Muñoz, Cristina; Paulino, Leandro; Monreal, Carlos M.; Zagal, Erick

doi:10.4067/s0718-58392010000300016

Cited by 81 publications

(49 citation statements)

References 82 publications

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“…Numerous studies in the last decade have evaluated the use of these inhibitors to reduce N gaseous and leaching losses and increase N-use efficiency in cropping and pastoral soils of the USA, Europe, and New Zealand (Di and Cameron, 2005;Subbarao et al, 2006;Saggar et al, 2009;Luo et al, 2010). However, no published information is available about the effect of N inhibitors on N loss (N2O-N emission) mitigation in Chilean pastoral soils and little information has been published about the seasonal variability of CO2 and N2O emission fluxes from volcanic ash soil under different agricultural uses and management (Muñoz et al, 2010; in southern-central Chile.…”

mentioning

confidence: 99%

Effect of Nitrogen Inhibitors on Nitrous Oxide Emissions and Pasture Growth After an Autumn Application in Volcanic Soil

Vistoso

Alfaro

Saggar

et al. 2012

Chilean J. Agric. Res.

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A range of technologies is available to reduce greenhouse gas emissions from agricultural systems. Among these, applying N transformation inhibitors is promising in reducing nitrous oxide (N2O) emissions in both arable and pastoral soils. A randomized complete block design with six replicates was used to quantify the effect of urease (UI) and nitrification (NI) inhibitors on N2O emissions and pasture production from permanent pasture in an Andisol after autumn-applied urea. The N2O emissions were measured periodically for 8 wk with PVC stationary chambers. Mineral N, DM yield, N concentration, and N uptake were analyzed. Our results show that adding fertilizer (40 kg N ha -1 ) significantly increased N2O emissions by 281% over the control treatment (P < 0.05) and adding N inhibitors to fertilizer N resulted in a 10%-29% reduction in emissions. Both inhibitors initially reduced nitrate-N production in the Andisol (Osorno series) either by slowing urea hydrolysis or the nitrification process. Increases in pasture yield (8%-13%), N concentration (7%-9%), and N uptake (46%-56%) were measured by adding N inhibitors with urea. Emission factors, measured under field conditions in Chile after autumn-applied urea and N inhibitors (applied alone or combined), were very low (0.052%-0.114%) compared with values reported in the literature and the Intergovernmental Panel on Climate Change (IPCC) default value (1%). Using these technologies could contribute to Chile's nationally established goal of a 20% reduction in greenhouse gas emissions by 2020.

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mentioning

confidence: 99%

Effect of Nitrogen Inhibitors on Nitrous Oxide Emissions and Pasture Growth After an Autumn Application in Volcanic Soil

Vistoso

Alfaro

Saggar

et al. 2012

Chilean J. Agric. Res.

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“…Since the first process produces the substrate for the second, N losses from applied cattle manure can be very high when the two processes are associated. As much as 60-70 % of fertilizer N applied to wetland crop may be volatilized as oxides of N (Munoz et al 2010).…”

Section: Nitrous Oxide Fluxes From Soilmentioning

confidence: 99%

“…Direct emissions of N 2 O from agricultural soils have increased substantially over the last few decades (Ma et al 2007), in parallel with increasing use of organic manures (Conrad et al 1983;Johnson et al 2005;Saggar 2010;Lin et al 2011). These factors are exacerbated by there being no chemical sinks for N 2 O in the troposphere, resulting in the mean residence time in the atmosphere of about 150 years (Munoz et al 2010;Saggar 2010). On average, 0.3-2.25 % of applied N to agricultural soils may be emitted as N 2 O (Smith et al 1997;Mosier et al 2003;Saggar 2010).…”

Section: Introductionmentioning

confidence: 99%

Nitrous oxide emissions from wetland soil amended with two types of cattle manure

Masaka

Nyamangara

Wuta

2016

Int J Recycl Org Waste Agricult

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Purpose The implications of increased applications of high quality cattle manure to agricultural systems in Africa on N 2 O emissions are still only partially understood. Methods A field experiment was carried out in a wetland in central Zimbabwe to determine the effects of cattle manure quality on emissions of N 2 O during the growing seasons of rape and tomato crops. The static chamber and gas chromatography techniques were used to capture and measure fluxes of N 2 O. Results The substitution of low N by high N manure significantly increased N 2 O fluxes and total N lost through N 2 O emission. Emissions of N 2 O increase with increasing content of N in applied manure. Conclusions Given that N 2 O in agricultural soil is produced predominantly through the microbial transformations of inorganic N, the potential of a soil to emit N 2 O increases with the increasing availability of N and consequently the N content in applied manure. The applications of lower rate of high and low N manures were followed by lower emissions of N 2 O, a result that is favorable to the objective of lowering the contribution of agricultural sources to the global greenhouse gas emissions. The loss of N in emissions of N 2 O expressed per unit mass of harvested dry matter yield decreases with increasing manure application, dry matter yield and N uptake. Improved agronomic practices for increased crop productivity can be used as a mitigation factor for reducing the contribution of agriculture in the global emissions of N 2 O.

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“…The contribution of agricultural soils to CO 2 emission depends on decomposition of different types of organic residues added to soil. Carbon dioxide is released through microbial and root respiration, where microflora contributes 99% of the CO 2 arising as a result of decomposition of OM (Munoz et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…This negatively affects agriculture, living being and finally the total environment. Carbon dioxide and methane are the most important greenhouse gases releasing from paddy fields responsible for global warming (Lee et al, 2006;Munoz et al, 2010). World soils and terrestrial ecosystems…”

Section: Introductionmentioning

confidence: 99%

Effect of Tillage Practices and Rice Straw Management on Soil Environment and Carbon Dioxide Emission

et al. 2017

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Carbon (C) inputs and tillage intensity impinge on C degradation and thus CO 2 emission and soil properties get influenced. Information on CO 2 emission and soil properties under different tillage practices and straw application in rice based cropping system in Bangladesh is lacking. The effects of rice straw and tillage operations on CO 2 emission and soil properties were quantified in four consecutive seasons of transplanted Aman and Boro rice grown under two tillage operations (minimum and traditional) and three levels of rice straw (control, incorporation and mulch) during 2010 to 2012. Irrespective of tillage practices, CO 2 emission peak reached after 3-4 weeks of straw application. Carbon dioxide emission ranged from 26 to 59 kg ha -1 day -1 under minimum tillage and 25 to 96 kg ha -1 day -1 under traditional tillage. Minimum tillage accumulated more C in soil, which could be attributed to lower rates of emission and straw degradation. Carbon degradation rate constants, k were 0.000300 and 0.000394 (day -1 ) under minimum and traditional tillage, respectively. Small increment in soil C might help reducing CO 2 in the atmosphere. Mineralization of straw increased nutrient contents and thereby improved the soil fertility and availability to the crops for nutrients' uptake. Traditional tillage significantly reduced soil bulk density and increased field capacity of the soil, whereas in addition, rice straw application furthermore increased permanent wilting point and available water content in the soil. The present study may help in identifying suitable tillage and residue management options in reducing CO 2 emission from rice fields.

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Greenhouse Gas (CO2 AND N2O) Emissions from Soils: A Review

Cited by 81 publications

References 82 publications

Effect of Nitrogen Inhibitors on Nitrous Oxide Emissions and Pasture Growth After an Autumn Application in Volcanic Soil

Effect of Nitrogen Inhibitors on Nitrous Oxide Emissions and Pasture Growth After an Autumn Application in Volcanic Soil

Nitrous oxide emissions from wetland soil amended with two types of cattle manure

Effect of Tillage Practices and Rice Straw Management on Soil Environment and Carbon Dioxide Emission

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