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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: |
10/03/2020 |
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Data da última atualização: |
22/04/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SIMON, P. L.; DIECKOW, J.; ZANATTA, J. A.; RAMALHO, B.; RIBEIRO, R. H.; VAN DER WEERDEN, T.; KLEIN, C. A. M. de. |
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Afiliação: |
Priscila L. Simon, AgResearch Invermay; Jeferson Dieckow, UFPR; JOSILEIA ACORDI ZANATTA, CNPF; Bruna Ramalho, UFPR; Ricardo H. Ribeiro, UFPR; Tony van der Weerden, AgResearch Invermay; Cecile A. M. de Klein, AgResearch Invermay. |
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Título: |
Does Brachiaria humidicola and dicyandiamide reduce nitrous oxide and ammonia emissions from cattle urine patches in the subtropics? |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Science of the Total Environment, v. 720, article 137692, June 2020. 10 p. |
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DOI: |
https://doi.org/10.1016/j.scitotenv.2020.137692 |
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Idioma: |
Inglês |
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Conteúdo: |
Nitrous oxide (N2O) emissions frompasture-based livestock systems represent 34% of Brazil's agricultural greenhouse gas emissions. The forage species Brachiaria humidicola is known for its biological nitrification inhibition (BNI) capacity and N2O emissions reduction ability from urine patches under tropical conditions. However, there is little information about the effect of BNI on N2O emission and ammonia (NH3) volatilisation in the subtropics. This study aimed to: (i) evaluate the potential of Brachiaria humidicola, compared with Panicum maximum (Jacq. cv. Áries; guinea grass), a broadly used grass (with no BNI capacity), to reduce N2O emissions under subtropical conditions; (ii) determine the efficacy of nitrification inhibitor dicyandiamide (DCD) to decrease N2O emissions; and (iii) determine the effect of brachiaria and DCD application on NH3 volatilisation. A field experiment was carried out using a Cambisol, where cattle urine ± DCD was applied to brachiaria and guinea grass. Over the 67-day measurement period, cumulative N2O emissions were 20% lower from urine patches in the brachiaria treatment (1138 mg N m?2, Emission factor = 1.06%) compared to guinea grass (1436 mg Nm?2, Emission factor=1.33%) (P b .10). A greenhouse experiment, using pots with the same treatments as in the field experiment, suggested that this could have been due to lower soil nitrate levels under brachiaria forage compared to guinea grass, indicating that BNI could be a possible mechanism for lower N2O emissions from brachiaria. The DCD application was effective in both forage species, decreasing N2O emissions by 40?50% (P b .10) compared with the urine only treatment. Approximately 25% of the urine applied N was lost via NH3 volatilisation, however the NH3 loss was not affected by forage species or DCD application (P N .10). Overall, the results demonstrated that brachiaria and DCD use are strategies that can reduce N2O emissions from urine patches. MenosNitrous oxide (N2O) emissions frompasture-based livestock systems represent 34% of Brazil's agricultural greenhouse gas emissions. The forage species Brachiaria humidicola is known for its biological nitrification inhibition (BNI) capacity and N2O emissions reduction ability from urine patches under tropical conditions. However, there is little information about the effect of BNI on N2O emission and ammonia (NH3) volatilisation in the subtropics. This study aimed to: (i) evaluate the potential of Brachiaria humidicola, compared with Panicum maximum (Jacq. cv. Áries; guinea grass), a broadly used grass (with no BNI capacity), to reduce N2O emissions under subtropical conditions; (ii) determine the efficacy of nitrification inhibitor dicyandiamide (DCD) to decrease N2O emissions; and (iii) determine the effect of brachiaria and DCD application on NH3 volatilisation. A field experiment was carried out using a Cambisol, where cattle urine ± DCD was applied to brachiaria and guinea grass. Over the 67-day measurement period, cumulative N2O emissions were 20% lower from urine patches in the brachiaria treatment (1138 mg N m?2, Emission factor = 1.06%) compared to guinea grass (1436 mg Nm?2, Emission factor=1.33%) (P b .10). A greenhouse experiment, using pots with the same treatments as in the field experiment, suggested that this could have been due to lower soil nitrate levels under brachiaria forage compared to guinea grass, indicating that BNI could be a possible mechanism for ... Mostrar Tudo |
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Palavras-Chave: |
Ammonium; BNI; Espécie forrageira; Forage species; NH3; Volatilisation; Volatilização. |
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Thesagro: |
Amônia; Brachiaria Humidicola; Nitrato. |
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Thesaurus Nal: |
Nitrates. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02983naa a2200337 a 4500
001 2121071
005 2020-04-22
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.scitotenv.2020.137692$2DOI
100 1 $aSIMON, P. L.
245 $aDoes Brachiaria humidicola and dicyandiamide reduce nitrous oxide and ammonia emissions from cattle urine patches in the subtropics?$h[electronic resource]
260 $c2020
520 $aNitrous oxide (N2O) emissions frompasture-based livestock systems represent 34% of Brazil's agricultural greenhouse gas emissions. The forage species Brachiaria humidicola is known for its biological nitrification inhibition (BNI) capacity and N2O emissions reduction ability from urine patches under tropical conditions. However, there is little information about the effect of BNI on N2O emission and ammonia (NH3) volatilisation in the subtropics. This study aimed to: (i) evaluate the potential of Brachiaria humidicola, compared with Panicum maximum (Jacq. cv. Áries; guinea grass), a broadly used grass (with no BNI capacity), to reduce N2O emissions under subtropical conditions; (ii) determine the efficacy of nitrification inhibitor dicyandiamide (DCD) to decrease N2O emissions; and (iii) determine the effect of brachiaria and DCD application on NH3 volatilisation. A field experiment was carried out using a Cambisol, where cattle urine ± DCD was applied to brachiaria and guinea grass. Over the 67-day measurement period, cumulative N2O emissions were 20% lower from urine patches in the brachiaria treatment (1138 mg N m?2, Emission factor = 1.06%) compared to guinea grass (1436 mg Nm?2, Emission factor=1.33%) (P b .10). A greenhouse experiment, using pots with the same treatments as in the field experiment, suggested that this could have been due to lower soil nitrate levels under brachiaria forage compared to guinea grass, indicating that BNI could be a possible mechanism for lower N2O emissions from brachiaria. The DCD application was effective in both forage species, decreasing N2O emissions by 40?50% (P b .10) compared with the urine only treatment. Approximately 25% of the urine applied N was lost via NH3 volatilisation, however the NH3 loss was not affected by forage species or DCD application (P N .10). Overall, the results demonstrated that brachiaria and DCD use are strategies that can reduce N2O emissions from urine patches.
650 $aNitrates
650 $aAmônia
650 $aBrachiaria Humidicola
650 $aNitrato
653 $aAmmonium
653 $aBNI
653 $aEspécie forrageira
653 $aForage species
653 $aNH3
653 $aVolatilisation
653 $aVolatilização
700 1 $aDIECKOW, J.
700 1 $aZANATTA, J. A.
700 1 $aRAMALHO, B.
700 1 $aRIBEIRO, R. H.
700 1 $aVAN DER WEERDEN, T.
700 1 $aKLEIN, C. A. M. de
773 $tScience of the Total Environment$gv. 720, article 137692, June 2020. 10 p.
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Registro original: |
Embrapa Florestas (CNPF) |
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Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Ocidental. |
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Data corrente: |
04/09/1996 |
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Data da última atualização: |
22/03/2019 |
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Autoria: |
ALBUQUERQUE, P. E. P. de; SANTOS, A. F. dos; PEREIRA, J. C. R. |
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Afiliação: |
EMBRAPA-CNPSD.; JOSÉ CLERIO REZENDE PEREIRA, CNPSD. |
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Título: |
Avaliação de pulverizadores costais motorizados. I- Alcance vertical efetivo para seringueiras. |
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Ano de publicação: |
1985 |
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Fonte/Imprenta: |
Manaus: EMBRAPA-CNPSD, 1985. |
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Páginas: |
3 p. |
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Série: |
(EMBRAPA-CNPSD. Pesquisa em Andamento, 33). |
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ISSN: |
0101-2118 |
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Idioma: |
Português |
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Conteúdo: |
Ensaios estão sendo conduzidos para obtenção de informações do alcance vertical efetivo de dois tipos de pulverizadores costais: marca JACTO, modelo PL-45, adaptado, e marca Guarany, modelo Garoa ULV/3. O pulverizador adaptado PL-45 apresentou uma maior distribuição de gotas na faixa dos 4,5m ate 7,0m de altura. O pulverizador Garoa ULV/3, pelos primeiros resultados, apresentou um padrão de distribuição superior, atingindo uma faixa de 12,0m de altura, mas sofre maior influência do vento devido possuir ventoinha de maior diâmetro. Portanto, em condições de baixa ou nula velocidade de vento, o modelo Garoa ULV/3 pode lançar eficientemente fungicidas em seringueiras de ate 12m de altura. |
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Palavras-Chave: |
Aerial sprayer; Bahia; Brasil; Fungicides application; Pulverizador foliar; Rubber tree. |
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Thesagro: |
Espécie; Fungicida; Hevea; Seringueira. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/59820/1/pesquisa-em-andamento-33.pdf
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Marc: |
LEADER 01502nam a2200289 a 4500
001 1665013
005 2019-03-22
008 1985 bl uuuu u0uu1 u #d
022 $a0101-2118
100 1 $aALBUQUERQUE, P. E. P. de
245 $aAvaliação de pulverizadores costais motorizados. I- Alcance vertical efetivo para seringueiras.
260 $aManaus: EMBRAPA-CNPSD$c1985
300 $a3 p.
490 $a(EMBRAPA-CNPSD. Pesquisa em Andamento, 33).
520 $aEnsaios estão sendo conduzidos para obtenção de informações do alcance vertical efetivo de dois tipos de pulverizadores costais: marca JACTO, modelo PL-45, adaptado, e marca Guarany, modelo Garoa ULV/3. O pulverizador adaptado PL-45 apresentou uma maior distribuição de gotas na faixa dos 4,5m ate 7,0m de altura. O pulverizador Garoa ULV/3, pelos primeiros resultados, apresentou um padrão de distribuição superior, atingindo uma faixa de 12,0m de altura, mas sofre maior influência do vento devido possuir ventoinha de maior diâmetro. Portanto, em condições de baixa ou nula velocidade de vento, o modelo Garoa ULV/3 pode lançar eficientemente fungicidas em seringueiras de ate 12m de altura.
650 $aEspécie
650 $aFungicida
650 $aHevea
650 $aSeringueira
653 $aAerial sprayer
653 $aBahia
653 $aBrasil
653 $aFungicides application
653 $aPulverizador foliar
653 $aRubber tree
700 1 $aSANTOS, A. F. dos
700 1 $aPEREIRA, J. C. R.
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Embrapa Amazônia Ocidental (CPAA) |
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