NO, N2O and CO2 soil emissions from Venezuelan corn fields under tillage and no-tillage agriculture

Marquina, Sorena; Pérez, Tibisay; Donoso, Loreto; Giuliante, A.; Rasse, Rafael; Herrera, Francisco

doi:10.1007/s10705-014-9659-0

Cited by 23 publications

(14 citation statements)

References 78 publications

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“…After N fertilizer applications, mean concentrations of soil NH 4 + -N ranged from 93 to 175 mg kg -1 . Losses of N in the form of NO x -N are higher than in the form of N 2 O-N during the evaluated period, as also found in other studies, under different cropping systems (Cruvinel et al, 2011;Marquina et al, 2015). The incorporation of the residues before corn cultivation promoted higher soil aeration and may have stimulated NO x emissions over N 2 O emissions (Carvalho et al, 2006;Metay et al, 2007).…”

Section: Resultssupporting

confidence: 81%

“…Multiple regressions used to explain the variation of CO 2 -C and NO x -N fluxes from an Oxisol in the Cerrado region, in Central Brazil, as affected by cover crops planted before corn (Zea mays), under conventional (CT) and no-tillage systems (NT). --N) and WFPS were also reported in other studies (Cruvinel et al, 2011;Marquina et al, 2015); however, in the present study, NO 3 --N concentrations were not significant as an explanatory variable for soil emissions.…”

Section: Resultssupporting

confidence: 64%

“…Pulses of NO x -N emissions with first rainfall events, after a long dry period, have been reported and are related to the reactiveness of the water-stressed soil decomposers and to dormant nitrifying bacteria that start to mineralize and metabolize organic and inorganic N in the soil, releasing NO as a by-product (Cruvinel et al, 2011;Hudman et al., 2012; Marquina et al, 2015). In addition, CO 2 -C fluxes are positively correlated with NO x -N emissions and also to microbial activity that can explain higher fluxes of CO 2 -C with the first rainfall events, after a long dry period (Marquina et al, 2015). Samples collected during the dry season show low emissions of GHGs due to soil humidity, as observed by Metay et al (2007).…”

Section: Resultsmentioning

confidence: 89%

“…The NO x -N and CO 2 -C fluxes started to increase at end of the dry season, i.e., from July-August to September, after the first rainfall events of the transition from the dry to the wet season (Figures 1 and 3). Pulses of NO x -N emissions with first rainfall events, after a long dry period, have been reported and are related to the reactiveness of the water-stressed soil decomposers and to dormant nitrifying bacteria that start to mineralize and metabolize organic and inorganic N in the soil, releasing NO as a by-product (Cruvinel et al, 2011;Hudman et al., 2012; Marquina et al, 2015). In addition, CO 2 -C fluxes are positively correlated with NO x -N emissions and also to microbial activity that can explain higher fluxes of CO 2 -C with the first rainfall events, after a long dry period (Marquina et al, 2015).…”

Section: Resultsmentioning

confidence: 99%

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Nitrogen oxides and CO2 from an Oxisol cultivated with corn in succession to cover crops

Carvalho

Bustamante

Coser

et al. 2016

Pesq. agropec. bras.

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-The objective of this work was to evaluate the effect of two legumes (Crotalaria juncea and Mucuna pruriens), as cover crops, and of natural fallow, as a control treatment, on the emissions of NO x , N 2 O, and CO 2 from an Oxisol cultivated with corn, under conventional and no-tillage systems, in the Cerrado region, in Central Brazil. Variations of CO 2 fluxes in the soil were explained mainly by soil humidity and, in the legumes, under conventional system, by soil NH 4 + -N concentration. Plots with legumes under no-tillage system had higher annual emissions of CO 2 , NO x , and N 2 O than natural fallow. Results show that the use of legumes as cover crops favors the emissions of NO x -N + N 2 O-N and CO 2 -C. However, when considering the potential for mitigation of CO 2 and nitrogen oxide emissions from the soil, it is important to evaluate changes in soil carbon and nitrogen stocks.

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Section: Resultssupporting

confidence: 81%

Section: Resultssupporting

confidence: 64%

Section: Resultsmentioning

confidence: 89%

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Nitrogen oxides and CO2 from an Oxisol cultivated with corn in succession to cover crops

Carvalho

Bustamante

Coser

et al. 2016

Pesq. agropec. bras.

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“…Measuring soil CO 2 efflux is crucial for accurately evaluating the effect of soil management practices on global C cycling [8]. As a key element in conservation agriculture, conservation tillage was shown to have lower soil CO 2 efflux than conventional tillage in some studies, but it also may lead to excessive soil compaction [9].…”

Section: Introductionmentioning

confidence: 99%

Effects of Soil Compaction and Tillage Practices on Carbon Dioxide Efflux in Northeast China: Evidence from an Incubation Study

Chen¹,

Yang²,

Liang³

et al. 2016

Pol. J. Environ. Stud.

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Limited information is available for how soil compaction affects carbon dioxide (CO 2 ) efflux under different tillage systems. To improve understanding of the effects of compaction and tillage on soil CO 2 efflux, an incubation study consisting of no tillage (NT), moldboard plow (MP), and ridge tillage (RT) was conducted to explore the relationships between CO 2 efflux and bulk density, as well as pore size distribution under different levels of bulk densities, and the thresholds of bulk density and the volume of pore size above which CO 2 efflux were affected in northeast China. Results showed that there was a significantly negative correlation (r = -0.990, p<0.05; r = -0.986, p<0.05; and r = -0.992, p<0.01, respectively, for NT, MP, and RT) between CO 2 efflux and bulk density, whereas the correlation was significantly positive (r ranges from 0.75 to 0.85, p<0.05 for each tillage practice under bulk densities of 1.0-1.6 g/cm 3 ) for the volume of small macropores (30-100 µm). The critical value of bulk density for impeding CO 2 efflux was more produced in 1.6 g/cm 3 and the volume of small macropores affected CO 2 efflux variation greatly. Ridge tillage is a better tillage practice for impeding soil CO 2 efflux than no tillage, as evidenced by the lesser volume of small macropores.

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Nitrous oxide emissions from solar greenhouses during summer fallow in the Loess Plateau of China

Liu

Qiu

2015

Greenhouse Gases

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In Northern China, vegetables are usually grown in solar greenhouses using intensive fertilization and cultivation, which produces significant greenhouse gas (GHG) emissions to the atmosphere. In this study, the nitrous oxide (N2O) emissions from 12 solar greenhouses with different fertilization practices (without manure application (SG); with chicken (SG‐CM) or swine (SG‐SM) manure application) were measured in the southern Loess Plateau of China during the summer fallow (35–61 days) in 2013 and 2014. The daily N2O fluxes varied over the ranges of 0.002–0.041, 0.014–12.58, and 0.005–8.41 mg N m−2 h−1 with averages of 0.037, 0.81, and 1.70 mg N m−2 h−1 in the SG, SG‐CM, and SG‐SM greenhouses, respectively, and the total N2O emissions were 1.17, 12.0, and 16.0 kg N ha−1, respectively. Significantly high peak N2O emissions were observed at the beginning of the summer fallow and after manure application, accounting for more than 80% of the total N2O emissions. The management practices of polythene removal, greenhouse enclosure for a week, and tillage also significantly increased the N2O daily fluxes and total emissions. Linear regression analyses showed that soil moisture and manure application were the main factors controlling the N2O emissions during summer fallow, followed by the residual mineral N in the soil. The results indicated that solar greenhouses cause high N2O emissions during summer fallow and farmers should use appropriate measures to mitigate these emissions. © 2015 Society of Chemical Industry and John Wiley & Sons, Ltd

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NO, N2O and CO2 soil emissions from Venezuelan corn fields under tillage and no-tillage agriculture

Cited by 23 publications

References 78 publications

Nitrogen oxides and CO2 from an Oxisol cultivated with corn in succession to cover crops

Nitrogen oxides and CO2 from an Oxisol cultivated with corn in succession to cover crops

Effects of Soil Compaction and Tillage Practices on Carbon Dioxide Efflux in Northeast China: Evidence from an Incubation Study

Nitrous oxide emissions from solar greenhouses during summer fallow in the Loess Plateau of China

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