N2O and CH4 emission and CH4 consumption in a sugarcane soil after variation in nitrogen and water application

Weier, K. L.

doi:10.1016/s0038-0717(99)00111-x

Cited by 61 publications

(32 citation statements)

References 20 publications

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“…This is because <20% of the annual rainfall (600-800 mm) occurs in winter, winter rainfall events are highly variable with coefficients of variation of 46-80% (Webb et al 1997), and forecast rain fronts during winter may not eventuate into sufficient rainfall for the crop to utilise the applied N (Doyle and Shapland 1991;Herridge 2011). Other studies of effects of split N application on N 2 O emissions have shown mixed results, depending on the timing of significant rainfall events in relation to N application (Weier 1999;Burton et al 2008;Venterea and Coulter 2015), or the total N rate applied Zebarth et al 2008). Expts 4 and 5 in this study showed apparent reductions in emissions of 38-51% compared with a single N application at sowing, although grain yield was also reduced in Expt 4.…”

Section: N 2 O Mitigation Options For Rainfed Cereal Croppingcontrasting

confidence: 46%

“…Soil CH 4 flux data from cultivated Australian soils are available for tropical sugarcane soils in Queensland (Weier 1999;Denmead et al 2010), temperate winter crops on a sandy soil in Western Australia (Barton et al 2010(Barton et al , 2013, and subtropical winter wheat on a clay soil (Wang et al 2011). There is a need for substantially more field-based data on CH 4 fluxes from a diversity of soil types, climatic conditions and potentially influential management factors.…”

Section: Introductionmentioning

confidence: 99%

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Greenhouse gas (N2O and CH4) fluxes under nitrogen-fertilised dryland wheat and barley on subtropical Vertosols: risk, rainfall and alternatives

et al. 2016

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Abstract. The northern Australian grains industry relies on nitrogen (N) fertiliser to optimise yield and protein, but N fertiliser can increase soil fluxes of nitrous oxide (N 2 O) and methane (CH 4 ). We measured soil N 2 O and CH 4 fluxes associated with wheat (Triticum aestivum) and barley (Hordeum vulgare) using automated (Expts 1, 3) and manual chambers (Expts 2, 4, 5). Experiments were conducted on subtropical Vertosol soils fertilised with N rates of 0-160 kg N ha -1 .In Expt 1 (2010), intense rainfall for a month before and after sowing elevated N 2 O emissions from N-fertilised (80 kg N ha -1 ) wheat, with 417 g N 2 O-N ha -1 emitted compared with 80 g N 2 O-N ha -1 for non-fertilised wheat. Once crop N uptake reduced soil mineral N, there was no further treatment difference in N 2 O. Expt 2 (2010) showed similar results, however, the reduced sampling frequency using manual chambers gave a lower cumulative N 2 O. By contrast, very low rainfall before and for several months after sowing Expt 3 (2011) resulted in no difference in N 2 O emissions between N-fertilised and non-fertilised barley. N 2 O emission factors were 0.42, 0.20 and -0.02 for Expts 1, 2 and 3, respectively. In Expts 4 and 5 (2011), N 2 O emissions increased with increasing rate of N fertiliser. Emissions were reduced by 45% when the N fertiliser was applied in a 50 : 50 split between sowing and mid-tillering, or by 70% when urea was applied with the nitrification inhibitor 3,4-dimethylpyrazole-phosphate.Methane fluxes were typically small and mostly negative in all experiments, especially in dry soils. Cumulative CH 4 uptake ranged from 242 to 435 g CH 4 -C ha -1 year -1 , with no effect of N fertiliser treatment. Considered in terms of CO 2 equivalents, soil CH 4 uptake offset 8-56% of soil N 2 O emissions, with larger offsets occurring in non-N-fertilised soils.The first few months from N fertiliser application to the period of rapid crop N uptake pose the main risk for N 2 O losses from rainfed cereal cropping on subtropical Vertosols, but the realisation of this risk is dependent on rainfall. Strategies that reduce the soil mineral N pool during this time can reduce the risk of N 2 O loss.

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Section: N 2 O Mitigation Options For Rainfed Cereal Croppingcontrasting

confidence: 46%

Section: Introductionmentioning

confidence: 99%

Greenhouse gas (N2O and CH4) fluxes under nitrogen-fertilised dryland wheat and barley on subtropical Vertosols: risk, rainfall and alternatives

et al. 2016

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“…Chamber design has been described in Weier (1999) and calculation of gas flux was done according to the procedure of Saggar et al (2004). In brief, 250 mm diameter and 200 mm high PVC chamber bases were inserted approximated 50-100 mm into the soil to act as 'collars' that were permanently positioned along the transect throughout the sampling campaign and removed temporarily only during harvest.…”

Section: Nitrous Oxide Samplingmentioning

confidence: 99%

Green waste compost reduces nitrous oxide emissions from feedlot manure applied to soil

Dalal

Gibson

Allen

et al. 2010

Agriculture, Ecosystems & Environment

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“…Zotelli (2012), avaliando a emissão de GEE's do solo de cana-soca com diferentes quantidades de palha, com ou sem a aplicação de vinhaça, encontrou fator de emissão para o N 2 O de 3,04% em relação ao nitrogênio do fertilizante e da vinhaça, no tratamento com a máxima quantidade de palha avaliada (21 t ha -1 ) e 0,63% para o tratamento sem palha. Weier (1999), avaliando as emissões de óxido nitroso e metano em cultivos de cana de açúcar relacionadas aos níveis de adubação nitrogenada e variação de água no solo, encontrou maiores emissões de CH 4 relacionados aos tratamentos adubados com ureia, enquanto as maiores emissões de N 2 O foram relacionados aos tratamentos adubados com sulfato de amônio.…”

Section: Cultivo De Cana-de-açúcar E Emissões De Geeunclassified

[Nota De Pesquisa] Emissões De Gee Pela Agricultura: O Caso Dos Cultivos De Cana-De-Açúcar (Ghg Emissions by Agriculture: The Case of the Sugar Cane Plantation)

Portela¹,

Leite²

2016

ABClima

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A agricultura é responsável por boa parte das emissões de gases de efeito estufa (GEEs), como o dióxido de carbono (CO2), o metano (CH4) e o óxido nitroso (N2O). Esses gases destacam-se pela capacidade de absorver energia, estabilidade na atmosfera e alta capacidade de reagir com a camada de ozônio, sendo alvo de pesquisas recentes. Em cultivos de cana-de-açúcar esses estudos têm sido mais frequentes, principalmente após a obrigatoriedade da colheita de cama sem queima, tratando-se principalmente do efeito dessa prática nas emissões desses gases para a atmosfera. Nesse sentido, objetivou-se com esta revisão, reunir informações sobre as fontes que contribuem para as emissões dos gases de efeito estufa pela agricultura, especialmente nos cultivos de cana-de-açúcar.

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N2O and CH4 emission and CH4 consumption in a sugarcane soil after variation in nitrogen and water application

Cited by 61 publications

References 20 publications

Greenhouse gas (N2O and CH4) fluxes under nitrogen-fertilised dryland wheat and barley on subtropical Vertosols: risk, rainfall and alternatives

Greenhouse gas (N2O and CH4) fluxes under nitrogen-fertilised dryland wheat and barley on subtropical Vertosols: risk, rainfall and alternatives

Green waste compost reduces nitrous oxide emissions from feedlot manure applied to soil

[Nota De Pesquisa] Emissões De Gee Pela Agricultura: O Caso Dos Cultivos De Cana-De-Açúcar (Ghg Emissions by Agriculture: The Case of the Sugar Cane Plantation)

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