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Registro Completo |
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Biblioteca(s): |
Embrapa Agrossilvipastoril. |
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Data corrente: |
10/01/2017 |
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Data da última atualização: |
10/01/2017 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
OLIVEIRA, M. O.; NASCIMENTO, A. F. do; PEDREIRA, B. C. e; PEREIRA, D. H.; RODRIGUES, R. de A. R. |
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Afiliação: |
CARINE M. OLIVEIRA, UFMT-SINOP; ALEXANDRE FERREIRA DO NASCIMENTO, CPAMT; BRUNO CARNEIRO E PEDREIRA, CPAMT; DALTON H. PEREIRA, UFMT-SINOP; RENATO DE ARAGAO RIBEIRO RODRIGUES, CNPS. |
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Título: |
Nitrous oxide (N2O) emissions from soil cultivated with grass Marandu and subjected to rates and sources of N fertilizers in Amazon of Mato Grosso. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
In: INTERNATIONAL SYMPOSIUM ON GREENHOUSE GASES IN AGRICULTURE, 2., 2016, Campo Grande, MS. Proceedings... Brasília, DF: Embrapa, 2016. p. 27-31. |
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Série: |
(Embrapa Gado de Corte. Documentos, 216). |
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Idioma: |
Inglês |
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Notas: |
Coordenador Roberto Giolo de Almeida. II SIGEE. |
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Conteúdo: |
Nitrogen is the nutrient required for the fodder production, and main sources are urea and ammonium sulfate, with 45% and 24% of N, respectively. The application of nitrogen may greatly increase the production of forage since improves the availability of exchangeable N in soil. The minimum and maximum rate usually applied are 40 and 80 kg ha-1 of N (SOUZA et al., 2004).If on the one hand it promotes the growth of plants, on the other the nitrogen fertilization increases N2O emissions from soils. Hence, the increase in emissions because of this agricultural practice must be understood as it contributes to the increase in greenhouse gas concentrations in the atmosphere, which are related to climate changes (RODRIGUES, 2006). Among the gases considered significant to global warming, the N2O is importance to agricultural systems because most global emissions of this gas are from processes occurring in the soil triggered by the N fertilization (Mosier et al., 2004). N2O has a global warming potential 310 times higher than CO2 (GWP - Global Warming Potential) (IPCC, 1997). The aim of this work was to measure the N2O emissions and to calculate the emission factors of two sources and two rates of N fer tilizers in pasture of B. brizantha cv. Marandu in the Amazon of Mato Grosso. |
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Thesaurus Nal: |
Fertilizers; Nitrous oxide. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/153134/1/2016-cpamt-nascimento-nitrous-oxide-emissons-grass-marandu-27-31.pdf
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Marc: |
LEADER 02139nam a2200205 a 4500
001 2060416
005 2017-01-10
008 2016 bl uuuu u00u1 u #d
100 1 $aOLIVEIRA, M. O.
245 $aNitrous oxide (N2O) emissions from soil cultivated with grass Marandu and subjected to rates and sources of N fertilizers in Amazon of Mato Grosso.$h[electronic resource]
260 $aIn: INTERNATIONAL SYMPOSIUM ON GREENHOUSE GASES IN AGRICULTURE, 2., 2016, Campo Grande, MS. Proceedings... Brasília, DF: Embrapa, 2016. p. 27-31.$c2016
490 $a(Embrapa Gado de Corte. Documentos, 216).
500 $aCoordenador Roberto Giolo de Almeida. II SIGEE.
520 $aNitrogen is the nutrient required for the fodder production, and main sources are urea and ammonium sulfate, with 45% and 24% of N, respectively. The application of nitrogen may greatly increase the production of forage since improves the availability of exchangeable N in soil. The minimum and maximum rate usually applied are 40 and 80 kg ha-1 of N (SOUZA et al., 2004).If on the one hand it promotes the growth of plants, on the other the nitrogen fertilization increases N2O emissions from soils. Hence, the increase in emissions because of this agricultural practice must be understood as it contributes to the increase in greenhouse gas concentrations in the atmosphere, which are related to climate changes (RODRIGUES, 2006). Among the gases considered significant to global warming, the N2O is importance to agricultural systems because most global emissions of this gas are from processes occurring in the soil triggered by the N fertilization (Mosier et al., 2004). N2O has a global warming potential 310 times higher than CO2 (GWP - Global Warming Potential) (IPCC, 1997). The aim of this work was to measure the N2O emissions and to calculate the emission factors of two sources and two rates of N fer tilizers in pasture of B. brizantha cv. Marandu in the Amazon of Mato Grosso.
650 $aFertilizers
650 $aNitrous oxide
700 1 $aNASCIMENTO, A. F. do
700 1 $aPEDREIRA, B. C. e
700 1 $aPEREIRA, D. H.
700 1 $aRODRIGUES, R. de A. R.
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Registro original: |
Embrapa Agrossilvipastoril (CPAMT) |
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Registro Completo
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
23/08/2016 |
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Data da última atualização: |
10/06/2024 |
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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: |
SANTOS, F. M.; BALIEIRO, F. de C.; ATAÍDE, D. H. dos S.; DINIZ, A. R.; CHAER, G. M. |
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Afiliação: |
FILIPE MARTINI SANTOS, UNIVERSIDADE FEDERAL RURAL DO RIO DE JANEIRO; FABIANO DE CARVALHO BALIEIRO, CNPS; DANILO HENRIQUE DOS SANTOS ATAÍDE, UFRRJ; ANDERSON RIBEIRO DINIZ, UFRRJ; GUILHERME MONTANDON CHAER, CNPAB. |
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Título: |
Dynamics of aboveground biomass accumulation in monospecific and mixed-species plantations of Eucalyptus and Acacia on a Brazilian sandy soil. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Forest Ecology and Management, v. 363, p. 86-97, Mar. 2016. |
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DOI: |
https://doi.org/10.1016/j.foreco.2015.12.028 |
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Idioma: |
Inglês |
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Conteúdo: |
In this study, we hypothesized that a positive impact of Acacia trees when grown in mixed stands with Eucalyptus trees in N-deficient soil, leads to a higher biomass production in mixed stands relative to the monocultures. A randomized block design experiment was set up in a Brazilian Planosol to assess the dynamics of aboveground accumulation of monospecific Eucalyptus urograndis (Eucalyptus urophylla S. T. Blake × Eucalyptus grandis W. Hill ex Maiden), with or without nitrogen fertilization (E100 + N and E100, respectively), and Acacia mangium (A100) stands, and two arrangements of both species in mixed plantations (E50A50 and E100A100). The height (H), diameter at breast height (DBH), litterfall, and aboveground biomass production were measured over a full rotation. Our results partially confirm the initial hypothesis. Acacia showed limited competitive ability against Eucalyptus, which resulted in a stratified canopy in the mixed stands, with Eucalyptus dominating the top layer, especially in the E100A100 arrangement. The E100A100 stand showed greater overall productivity compared with the E100 stand and similar productivity relative to the E100 + N stand. The E50A50 arrangement produced taller Eucalyptus trees with a larger diameter than the monoculture, although the smaller population of Eucalyptus trees in this mixed stand resulted in an overall biomass production that was equal to or less than that of the monocultures E100 and E100 + N, respectively. However, the DBH growth rate of Eucalyptus trees in E50A50 showed no signs of stagnation up to 60 months, which is different from the other treatments. Consequently, the harvesting age of such stands can be extended, which allows for the production of Eucalyptus logs with greater value for the lumber market. MenosIn this study, we hypothesized that a positive impact of Acacia trees when grown in mixed stands with Eucalyptus trees in N-deficient soil, leads to a higher biomass production in mixed stands relative to the monocultures. A randomized block design experiment was set up in a Brazilian Planosol to assess the dynamics of aboveground accumulation of monospecific Eucalyptus urograndis (Eucalyptus urophylla S. T. Blake × Eucalyptus grandis W. Hill ex Maiden), with or without nitrogen fertilization (E100 + N and E100, respectively), and Acacia mangium (A100) stands, and two arrangements of both species in mixed plantations (E50A50 and E100A100). The height (H), diameter at breast height (DBH), litterfall, and aboveground biomass production were measured over a full rotation. Our results partially confirm the initial hypothesis. Acacia showed limited competitive ability against Eucalyptus, which resulted in a stratified canopy in the mixed stands, with Eucalyptus dominating the top layer, especially in the E100A100 arrangement. The E100A100 stand showed greater overall productivity compared with the E100 stand and similar productivity relative to the E100 + N stand. The E50A50 arrangement produced taller Eucalyptus trees with a larger diameter than the monoculture, although the smaller population of Eucalyptus trees in this mixed stand resulted in an overall biomass production that was equal to or less than that of the monocultures E100 and E100 + N, respectively. However, the DBH ... Mostrar Tudo |
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Palavras-Chave: |
Allometric relationships; Alometria; BNF; Ecological interactions; Espécie florestal; FBN; Stemwood production. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 02655naa a2200265 a 4500
001 2051507
005 2024-06-10
008 2016 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.foreco.2015.12.028$2DOI
100 1 $aSANTOS, F. M.
245 $aDynamics of aboveground biomass accumulation in monospecific and mixed-species plantations of Eucalyptus and Acacia on a Brazilian sandy soil.$h[electronic resource]
260 $c2016
520 $aIn this study, we hypothesized that a positive impact of Acacia trees when grown in mixed stands with Eucalyptus trees in N-deficient soil, leads to a higher biomass production in mixed stands relative to the monocultures. A randomized block design experiment was set up in a Brazilian Planosol to assess the dynamics of aboveground accumulation of monospecific Eucalyptus urograndis (Eucalyptus urophylla S. T. Blake × Eucalyptus grandis W. Hill ex Maiden), with or without nitrogen fertilization (E100 + N and E100, respectively), and Acacia mangium (A100) stands, and two arrangements of both species in mixed plantations (E50A50 and E100A100). The height (H), diameter at breast height (DBH), litterfall, and aboveground biomass production were measured over a full rotation. Our results partially confirm the initial hypothesis. Acacia showed limited competitive ability against Eucalyptus, which resulted in a stratified canopy in the mixed stands, with Eucalyptus dominating the top layer, especially in the E100A100 arrangement. The E100A100 stand showed greater overall productivity compared with the E100 stand and similar productivity relative to the E100 + N stand. The E50A50 arrangement produced taller Eucalyptus trees with a larger diameter than the monoculture, although the smaller population of Eucalyptus trees in this mixed stand resulted in an overall biomass production that was equal to or less than that of the monocultures E100 and E100 + N, respectively. However, the DBH growth rate of Eucalyptus trees in E50A50 showed no signs of stagnation up to 60 months, which is different from the other treatments. Consequently, the harvesting age of such stands can be extended, which allows for the production of Eucalyptus logs with greater value for the lumber market.
653 $aAllometric relationships
653 $aAlometria
653 $aBNF
653 $aEcological interactions
653 $aEspécie florestal
653 $aFBN
653 $aStemwood production
700 1 $aBALIEIRO, F. de C.
700 1 $aATAÍDE, D. H. dos S.
700 1 $aDINIZ, A. R.
700 1 $aCHAER, G. M.
773 $tForest Ecology and Management$gv. 363, p. 86-97, Mar. 2016.
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