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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Ocidental. |
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Data corrente: |
18/02/2013 |
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Data da última atualização: |
25/06/2013 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
BARRETO, L. R.; SOUSA, S. G. A. de; GARCIA, L. C. |
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Afiliação: |
SILAS GARCIA AQUINO DE SOUSA, CPAA; LUCINDA CARNEIRO GARCIA, CPAA. |
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Título: |
Avaliação do crescimento da Acacia mangium Willd (Mimosaceae) associada ao plantio do mogno (Swietenia macrophylla, King). |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
In: JORNADA DE INICIAÇÃO CIENTÍFICA DA EMBRAPA AMAZÔNIA OCIDENTAL, 9., 2012, Manaus. Anais... Manaus: Embrapa Amazônia Ocidental, 2012. p. 87-92. (Embrapa Amazônia Ocidental. Documentos, 100). |
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Idioma: |
Português |
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Conteúdo: |
O interesse em associar a acácia (Acacia mangium) com o mogno (Swietenia macrophylla, King) decorre de seu bom desempenho e desenvolvimento e crescimento rápido nas condições de solo da Amazônia, por outro lado, o mogno em monocultivo sofre grande ataque da broca do caule, entretanto quando associado com cultivo agroflorestal ou associado a uma espécie de crescimento rápido apresenta um retardamento da broca do caule. Espera-se que a acácia mangium, tenha crescimento rápido, protegendo o mogno de forma biológica e física. O ensaio foi implantado na área experimental da Embrapa, km 29 da rodovia Am 10, estrada Manaus/Itacoatiara. O plantio foi realizado em diferentes arranjos agroflorestais, no delineamento estatístico de blocos casualizados, com quatro tratamentos (densidade de plantas/ha) e três repetições. De acordo com análise de variância, não houve diferença estatística significativa entre os tratamentos, para as variáveis altura e diâmetro do caule. Aos noventa dias de plantio em campo, observou-se media geral em altura de 66,06 cm, diâmetro do caule de 7,64 mm e alto índice de mortalidade (73%). Espera-se que aos doze meses de idade os tratamentos possam apresentar diferença no crescimento em altura e diâmetro do caule. |
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Thesagro: |
Acácia; Mogno; Silvicultura. |
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Thesaurus Nal: |
Amazonia. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/84790/1/IX-Jornada-acacia.pdf
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Marc: |
LEADER 01963nam a2200181 a 4500
001 1949650
005 2013-06-25
008 2012 bl uuuu u00u1 u #d
100 1 $aBARRETO, L. R.
245 $aAvaliação do crescimento da Acacia mangium Willd (Mimosaceae) associada ao plantio do mogno (Swietenia macrophylla, King).
260 $aIn: JORNADA DE INICIAÇÃO CIENTÍFICA DA EMBRAPA AMAZÔNIA OCIDENTAL, 9., 2012, Manaus. Anais... Manaus: Embrapa Amazônia Ocidental, 2012. p. 87-92. (Embrapa Amazônia Ocidental. Documentos$c2012
520 $aO interesse em associar a acácia (Acacia mangium) com o mogno (Swietenia macrophylla, King) decorre de seu bom desempenho e desenvolvimento e crescimento rápido nas condições de solo da Amazônia, por outro lado, o mogno em monocultivo sofre grande ataque da broca do caule, entretanto quando associado com cultivo agroflorestal ou associado a uma espécie de crescimento rápido apresenta um retardamento da broca do caule. Espera-se que a acácia mangium, tenha crescimento rápido, protegendo o mogno de forma biológica e física. O ensaio foi implantado na área experimental da Embrapa, km 29 da rodovia Am 10, estrada Manaus/Itacoatiara. O plantio foi realizado em diferentes arranjos agroflorestais, no delineamento estatístico de blocos casualizados, com quatro tratamentos (densidade de plantas/ha) e três repetições. De acordo com análise de variância, não houve diferença estatística significativa entre os tratamentos, para as variáveis altura e diâmetro do caule. Aos noventa dias de plantio em campo, observou-se media geral em altura de 66,06 cm, diâmetro do caule de 7,64 mm e alto índice de mortalidade (73%). Espera-se que aos doze meses de idade os tratamentos possam apresentar diferença no crescimento em altura e diâmetro do caule.
650 $aAmazonia
650 $aAcácia
650 $aMogno
650 $aSilvicultura
700 1 $aSOUSA, S. G. A. de
700 1 $aGARCIA, L. C.
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Registro original: |
Embrapa Amazônia Ocidental (CPAA) |
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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. |
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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Circulação/Nível: |
A - 1 |
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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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Embrapa Florestas (CNPF) |
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