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 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
19/11/2018 |
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Data da última atualização: |
19/11/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SIMON, P. L.; DIECKOW, J.; KLEIN, C. A. M. de; ZANATTA, J. A.; WEERDEN, T. J. van der; RAMALHO, B.; BAYER, C. |
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Afiliação: |
Priscila Luzia Simon, UFPR; Jeferson Dieckow, UFPR; Cecile A. M. de Klein, AgResearch Invermay; JOSILEIA ACORDI ZANATTA, CNPF; Tony J. van der Weerden, AgResearch Invermay; Bruna Ramalho, UFPR; Cimelio Bayer, UFRGS. |
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Título: |
Nitrous oxide emission factors from cattle urine and dung, and dicyandiamide (DCD) as a mitigation strategy in subtropical pastures. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Agriculture, Ecosystems and Environment, v. 267, p. 74-82, Nov. 2018. |
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DOI: |
10.1016/j.agee.2018.08.013 |
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Idioma: |
Inglês |
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Conteúdo: |
The Brazilian cattle herd (> 200 million) contributes, via excreta, 41% of the national emission of nitrous oxide (N2O), but little country-specific information exists on related emission factors and mitigation options. The aims of this study were: (i) to determine the N2O emission factors (EF) for dairy cattle urine and dung in a subtropical pasture and compare them with the 2% EF adopted by the IPCC; (ii) to evaluate the efficacy of the nitrification inhibitor dicyandiamide (DCD) to reduce those N2O emissions; and (iii) to determine if the best mode of DCD application is dissolved into or sprayed on urine and dung. An experiment was conducted in a kikuyu grass (Pennisetum clandestinum) pasture over a haplic Cambisol, in southern Brazil. Fresh urine and dung from Friesian dairy cows were applied with or without application of DCD; DCD was dissolved into the excreta before its application onto the soil, or was sprayed on the excreta patch. Treatments were applied four times, once per each season of 2014 (in different spots, same area). After excreta application, N2O fluxes were monitored in 10 air sampling sessions over 63?68 days, by using closed static chambers. Urine and dung were important sources of N2O, with an average EF of 0.34% for urine and 0.11% for dung; this urges the investigation of related mitigation strategies for Brazilian cattle systems. Yet, those emission factors were not as high as the IPCC default value of 2%, which suggests that this default value may need to be revised for the subtropical region. Additionally, this revision should consider the disaggregation of the EF for urine and dung. As a mitigation strategy, the use of DCD had a potential to curb N2O emission from urine patches, particularly in the cooler seasons of autumn and winter, when it reduced emissions by 60?82% after being dissolved in urine. DCD sprayed on excreta patches significantly reduced emissions in autumn only (by 47%) and thus was less efficient than when dissolved in urine. With respect to dung, there was no clear evidence that N2O emission from that excreta is mitigated by DCD, either dissolved into the dung mass or sprayed over the dung pat. MenosThe Brazilian cattle herd (> 200 million) contributes, via excreta, 41% of the national emission of nitrous oxide (N2O), but little country-specific information exists on related emission factors and mitigation options. The aims of this study were: (i) to determine the N2O emission factors (EF) for dairy cattle urine and dung in a subtropical pasture and compare them with the 2% EF adopted by the IPCC; (ii) to evaluate the efficacy of the nitrification inhibitor dicyandiamide (DCD) to reduce those N2O emissions; and (iii) to determine if the best mode of DCD application is dissolved into or sprayed on urine and dung. An experiment was conducted in a kikuyu grass (Pennisetum clandestinum) pasture over a haplic Cambisol, in southern Brazil. Fresh urine and dung from Friesian dairy cows were applied with or without application of DCD; DCD was dissolved into the excreta before its application onto the soil, or was sprayed on the excreta patch. Treatments were applied four times, once per each season of 2014 (in different spots, same area). After excreta application, N2O fluxes were monitored in 10 air sampling sessions over 63?68 days, by using closed static chambers. Urine and dung were important sources of N2O, with an average EF of 0.34% for urine and 0.11% for dung; this urges the investigation of related mitigation strategies for Brazilian cattle systems. Yet, those emission factors were not as high as the IPCC default value of 2%, which suggests that this default value may... Mostrar Tudo |
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Palavras-Chave: |
Ammonium; Application mode; Friesian cows; Inibidor de nitrificação; Nitrate; Nitrification inhibitor; WFPS. |
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Thesagro: |
Amônia; Gado Holandês; Nitrato. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 03159naa a2200325 a 4500
001 2099548
005 2018-11-19
008 2018 bl uuuu u00u1 u #d
024 7 $a10.1016/j.agee.2018.08.013$2DOI
100 1 $aSIMON, P. L.
245 $aNitrous oxide emission factors from cattle urine and dung, and dicyandiamide (DCD) as a mitigation strategy in subtropical pastures.$h[electronic resource]
260 $c2018
520 $aThe Brazilian cattle herd (> 200 million) contributes, via excreta, 41% of the national emission of nitrous oxide (N2O), but little country-specific information exists on related emission factors and mitigation options. The aims of this study were: (i) to determine the N2O emission factors (EF) for dairy cattle urine and dung in a subtropical pasture and compare them with the 2% EF adopted by the IPCC; (ii) to evaluate the efficacy of the nitrification inhibitor dicyandiamide (DCD) to reduce those N2O emissions; and (iii) to determine if the best mode of DCD application is dissolved into or sprayed on urine and dung. An experiment was conducted in a kikuyu grass (Pennisetum clandestinum) pasture over a haplic Cambisol, in southern Brazil. Fresh urine and dung from Friesian dairy cows were applied with or without application of DCD; DCD was dissolved into the excreta before its application onto the soil, or was sprayed on the excreta patch. Treatments were applied four times, once per each season of 2014 (in different spots, same area). After excreta application, N2O fluxes were monitored in 10 air sampling sessions over 63?68 days, by using closed static chambers. Urine and dung were important sources of N2O, with an average EF of 0.34% for urine and 0.11% for dung; this urges the investigation of related mitigation strategies for Brazilian cattle systems. Yet, those emission factors were not as high as the IPCC default value of 2%, which suggests that this default value may need to be revised for the subtropical region. Additionally, this revision should consider the disaggregation of the EF for urine and dung. As a mitigation strategy, the use of DCD had a potential to curb N2O emission from urine patches, particularly in the cooler seasons of autumn and winter, when it reduced emissions by 60?82% after being dissolved in urine. DCD sprayed on excreta patches significantly reduced emissions in autumn only (by 47%) and thus was less efficient than when dissolved in urine. With respect to dung, there was no clear evidence that N2O emission from that excreta is mitigated by DCD, either dissolved into the dung mass or sprayed over the dung pat.
650 $aAmônia
650 $aGado Holandês
650 $aNitrato
653 $aAmmonium
653 $aApplication mode
653 $aFriesian cows
653 $aInibidor de nitrificação
653 $aNitrate
653 $aNitrification inhibitor
653 $aWFPS
700 1 $aDIECKOW, J.
700 1 $aKLEIN, C. A. M. de
700 1 $aZANATTA, J. A.
700 1 $aWEERDEN, T. J. van der
700 1 $aRAMALHO, B.
700 1 $aBAYER, C.
773 $tAgriculture, Ecosystems and Environment$gv. 267, p. 74-82, Nov. 2018.
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Registro original: |
Embrapa Florestas (CNPF) |
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Biblioteca |
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Origem |
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Cutter |
Registro |
Volume |
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URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Solos; Embrapa Trigo. |
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Data corrente: |
27/11/2008 |
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Data da última atualização: |
26/10/2021 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
MARTORANO, L. G.; FARIA, R. T. de; BERGAMASCHI, H.; DALMAGO, G. A. |
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Afiliação: |
LUCIETA GUERREIRO MARTORANO, CNPS; ROGÉRIO T. DE FARIA, IAPAR; HOMERO BERGAMASCHI, UFRGS; GENEI ANTONIO DALMAGO, CNPT. |
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Título: |
Evaluation of the CROPGRO/DSSAT model performance for simulating plant growth and grain yield of soybeans, subjected to no-tillage and conventional systems in the subtropical Southern Brazil. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
Italian Journal of Agronomy, v. 3, n. 3, p. 795-796, Jul./Sept. 2008. Suplemento. Trabalho apresentado no 10th Congress of the European Society for Agronomy, 2008, Bologna. |
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Idioma: |
Inglês |
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Conteúdo: |
During crop cycle, growth and phenological development are influenced by different factors such as weather conditions, genetic potential, soil fertility, and system management. Management practices influences soil water retention properties and consequently crop growth an yield. In Brazil, a paradigm chance in soil management has lead conventional tillage system to give room to no-tillage cropping system, due to impacts such as erosin processes and soil organic carbon losses. No-tillage is considered a conservationist system because it includes crop rotation, mulching and only minimum soil mobilization on the seeding line. Those practices promote higher soil water storage, which are attributed o improvement of mesoporosity and non-saturated soil hydraulic conductivity. Knowledge on soil-water-atmosphere system dynamics is required on modeling crop growth and yield for supporting decision systems. Among several options, the Decision Support System for Agrotecnology Transfer (DSSAT) seem to be the most suitable for practical application since it includes more than 18 different crops models tested worldwide. After model calibration against field data, it is possible to simulate realistic scenarios for decision-makers (farmers, managers, agricultural technicians and government), as well as to identify crop constraint for scientists defining research priorities. This study aimed to evaluate CROPGRO/DSSAT model performance to simulate soybean growth, development and crop yield under no-tillage and conventional tillage systems in subtropical climate conditions, in order to support decision making in soybean cropping of Brazil. MenosDuring crop cycle, growth and phenological development are influenced by different factors such as weather conditions, genetic potential, soil fertility, and system management. Management practices influences soil water retention properties and consequently crop growth an yield. In Brazil, a paradigm chance in soil management has lead conventional tillage system to give room to no-tillage cropping system, due to impacts such as erosin processes and soil organic carbon losses. No-tillage is considered a conservationist system because it includes crop rotation, mulching and only minimum soil mobilization on the seeding line. Those practices promote higher soil water storage, which are attributed o improvement of mesoporosity and non-saturated soil hydraulic conductivity. Knowledge on soil-water-atmosphere system dynamics is required on modeling crop growth and yield for supporting decision systems. Among several options, the Decision Support System for Agrotecnology Transfer (DSSAT) seem to be the most suitable for practical application since it includes more than 18 different crops models tested worldwide. After model calibration against field data, it is possible to simulate realistic scenarios for decision-makers (farmers, managers, agricultural technicians and government), as well as to identify crop constraint for scientists defining research priorities. This study aimed to evaluate CROPGRO/DSSAT model performance to simulate soybean growth, development and crop yield und... Mostrar Tudo |
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Palavras-Chave: |
CROPGRO; Modelagem; Modelo de desempenho; Simulador de crescimento. |
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Thesagro: |
Crescimento; Planta; Plantio Direto; Soja. |
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Categoria do assunto: |
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P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/227218/1/Evaluation-of-the-CROPGRO-DSSAT-model-performance-2008.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/88650/1/2008-PC-martorano.pdf
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Marc: |
LEADER 02571nam a2200241 a 4500
001 1339720
005 2021-10-26
008 2008 bl uuuu u00u1 u #d
100 1 $aMARTORANO, L. G.
245 $aEvaluation of the CROPGRO/DSSAT model performance for simulating plant growth and grain yield of soybeans, subjected to no-tillage and conventional systems in the subtropical Southern Brazil.$h[electronic resource]
260 $aItalian Journal of Agronomy, v. 3, n. 3, p. 795-796, Jul./Sept. 2008. Suplemento. Trabalho apresentado no 10th Congress of the European Society for Agronomy, 2008, Bologna.$c2008
520 $aDuring crop cycle, growth and phenological development are influenced by different factors such as weather conditions, genetic potential, soil fertility, and system management. Management practices influences soil water retention properties and consequently crop growth an yield. In Brazil, a paradigm chance in soil management has lead conventional tillage system to give room to no-tillage cropping system, due to impacts such as erosin processes and soil organic carbon losses. No-tillage is considered a conservationist system because it includes crop rotation, mulching and only minimum soil mobilization on the seeding line. Those practices promote higher soil water storage, which are attributed o improvement of mesoporosity and non-saturated soil hydraulic conductivity. Knowledge on soil-water-atmosphere system dynamics is required on modeling crop growth and yield for supporting decision systems. Among several options, the Decision Support System for Agrotecnology Transfer (DSSAT) seem to be the most suitable for practical application since it includes more than 18 different crops models tested worldwide. After model calibration against field data, it is possible to simulate realistic scenarios for decision-makers (farmers, managers, agricultural technicians and government), as well as to identify crop constraint for scientists defining research priorities. This study aimed to evaluate CROPGRO/DSSAT model performance to simulate soybean growth, development and crop yield under no-tillage and conventional tillage systems in subtropical climate conditions, in order to support decision making in soybean cropping of Brazil.
650 $aCrescimento
650 $aPlanta
650 $aPlantio Direto
650 $aSoja
653 $aCROPGRO
653 $aModelagem
653 $aModelo de desempenho
653 $aSimulador de crescimento
700 1 $aFARIA, R. T. de
700 1 $aBERGAMASCHI, H.
700 1 $aDALMAGO, G. A.
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