Intensification in Pastoral Farming: Impacts on Soil Attributes and Gaseous Emissions

Saggar, Surinder; Luo, Junyu; Kim, Dong-Gill; Jha, Neha

doi:10.1007/978-3-642-20256-8_10

Cited by 11 publications

(9 citation statements)

References 116 publications

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“…Therefore excess N is lost from the system through leaching of nitrate (NO 3 --N) and gaseous emissions (e.g. N O) (Saggar et al, 2011). In conditions where the N substrate is not a limiting factor, N 2 O production is primarily affected by soil WFPS (Linn and Doran, 1984;van der Weerden et al, 2011;ME, 2015).…”

Section: Introductionmentioning

confidence: 99%

Improving and disaggregating N2O emission factors for ruminant excreta on temperate pasture soils

Król

Carolan²,

Minet

et al. 2016

Science of The Total Environment

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Cattle excreta deposited on grazed grasslands are a major source of the greenhouse gas (GHG) nitrous oxide (N2O). Currently, many countries use the IPCC default emission factor (EF) of 2% to estimate excreta-derived N2O emissions. However, emissions can vary greatly depending on the type of excreta (dung or urine), soil type and timing of application. Therefore three experiments were conducted to quantify excreta-derived N2O emissions and their associated EFs, and to assess the effect of soil type, season of application and type of excreta on the magnitude of losses. Cattle dung, urine and artificial urine treatments were applied in spring, summer and autumn to three temperate grassland sites with varying soil and weather conditions. Nitrous oxide emissions were measured from the three experiments over 12months to generate annual N2O emission factors. The EFs from urine treated soil was greater (0.30-4.81% for real urine and 0.13-3.82% for synthetic urine) when compared with dung (-0.02-1.48%) treatments. Nitrous oxide emissions were driven by environmental conditions and could be predicted by rainfall and temperature before, and soil moisture deficit after application; highlighting the potential for a decision support tool to reduce N2O emissions by modifying grazing management based on these parameters. Emission factors varied seasonally with the highest EFs in autumn and were also dependent on soil type, with the lowest EFs observed from well-drained and the highest from imperfectly drained soil. The EFs averaged 0.31 and 1.18% for cattle dung and urine, respectively, both of which were considerably lower than the IPCC default value of 2%. These results support both lowering and disaggregating EFs by excreta type.

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Section: Introductionmentioning

confidence: 99%

Improving and disaggregating N2O emission factors for ruminant excreta on temperate pasture soils

Król

Carolan²,

Minet

et al. 2016

Science of The Total Environment

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“…Devido a quantidade de N excretado pelos animais geralmente exceder a necessidade imediata das plantas, o excesso de N pode ser perdido através da lixiviação de nitrato e emissões gasosas, como o N 2 O (SAGGAR et al, 2011). Dessa forma, os excrementos animais são uma das principais fontes das emissões de N 2 O no setor agropecuário (LUO et al, 2014).…”

Section: Revisão De Literaturaunclassified

Diferenciais Tecnológicos E Gerenciais Aplicados À Ovinocultura

Debortoli¹,

Agostini²,

Castaman³

et al. 2019

Análise Socioeconômica Da Exploração De Ovinos, Caprinos E Bovinos

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Todo o conteúdo deste livro está licenciado sob uma Licença de Atribuição Creative Commons. Atribuição 4.0 Internacional (CC BY 4.0).O conteúdo dos artigos e seus dados em sua forma, correção e confiabilidade são de responsabilidade exclusiva dos autores. Permitido o download da obra e o compartilhamento desde que sejam atribuídos créditos aos autores, mas sem a possibilidade de alterá-la de nenhuma forma ou utilizá-la para fins comerciais.

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“…Nitrous oxide gas is formed in soils through the microbiological processes of nitrification and denitrification. Nitrous oxide production by nitrifying bacteria may arise either during ammonium (NH 4 + ) oxidation to nitrite (NO 2 − ) or during dissimilatory NO 2 − reduction when the oxygen (O 2 ) supply is limited (Saggar et al 2011;Akiyama et al 2013;Li et al 2014b). The complex interactions between soil properties, climatic factors and agricultural practices all affect the extent of these gaseous emissions (Saggar et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Nitrogen gaseous emissions from farm effluent application to pastures and mitigation measures to reduce the emissions: a review

Luo

Shi

et al. 2015

New Zealand Journal of Agricultural Research

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Potential losses of nitrogen (N) from land application of effluents include ammonia (NH 3 ) and nitrous oxide (N 2 O) emissions. In this review paper, the extent of the NH 3 and N 2 O losses resulting from application of effluents to pastoral soils is assessed. Nitrogen losses, as NH 3 and N 2 O, from applied effluent to pastoral soil ranged from 1%-66% and <0.1%-6% of the applied N, respectively. The potential mitigation methods include: reducing livestock numbers; lowering N content of the effluent; using N process inhibitors; optimising timing of effluent application; and applying effluent at rates that match plant uptake. It is important to remember that some of these options can result in 'pollution swapping' and some of them are in the early stages of development. Future research needs to focus on the overall impact of mitigation options on the whole suite of gaseous emissions and the practicality of those options.

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Intensification in Pastoral Farming: Impacts on Soil Attributes and Gaseous Emissions

Cited by 11 publications

References 116 publications

Improving and disaggregating N2O emission factors for ruminant excreta on temperate pasture soils

Improving and disaggregating N2O emission factors for ruminant excreta on temperate pasture soils

Diferenciais Tecnológicos E Gerenciais Aplicados À Ovinocultura

Nitrogen gaseous emissions from farm effluent application to pastures and mitigation measures to reduce the emissions: a review

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