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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
13/04/2015 |
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Data da última atualização: |
13/04/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SOARES, J. R; CANTARELLA, H.; VARGAS, V. P; CARMO, J. B. do; MARTINS, A. A; SOUSA, R. de M.; ANDRADE, C. A. de. |
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Afiliação: |
JOHNNY RODRIGUES SOARES, IAC; HEITOR CANTARELLA, IAC; VITOR PAULO VARGAS, IAC; JANAINA BRAGA DO CARMO, IAC; ACACIO AGOSTINHO MARTINS, IAC; RAFAEL DE MELO SOUSA, IAC; CRISTIANO ALBERTO DE ANDRADE, CNPMA. |
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Título: |
Enhanced-efficiency fertilizers in nitrous oxide emissions from urea applied to sugarcane. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Journal of Environmental Quality, Madison, v. 44. n. 2, p. 423-430, 2015. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: The environmental benefits of producing biofuels from sugarcane have been questioned due to greenhouse gas emissions during the biomass production stage, especially nitrous oxide (N2O) associated with nitrogen (N) fertilization. The objective of this work was to evaluate the use of nitrification inhibitors (NIs) dicyandiamide (DCD) and 3,4 dimethylpyrazole phosphate (DMPP) and a controlled-release fertilizer (CRF) to reduce N2O emissions from urea, applied at a rate of 120 kg ha?1 of N. Two field experiments in ratoon cycle sugarcane were performed in Brazil. The treatments were (i) no N (control), (ii) urea, (iii) urea+DCD, (iv) urea+DMPP, and (v) CRF. Measurements of N2O fluxes were performed using static chambers with four replications. The measurements were conducted three times per week during the first 3 mo and biweekly afterward for a total of 217 and 382 d in the first and second seasons, respectively. The cumulative N2O?N emissions in the first ratoon cycle were 1098 g ha?1 in the control treatment and 1924 g ha?1 with urea (0.7% of the total N applied). Addition of NIs to urea reduced N2O emissions by more than 90%, which did not differ from those of the plots without N. The CRF treatment showed N2O emissions no different from those of urea. The results were similar in the second ratoon: the treatment with urea showed N2O emissions of 0.75% of N applied N. Application of NIs resulted in a strong reduction in N2O emissions, but CRF increased emissions compared with urea. We therefore conclude that both NIs can be options for mitigation of greenhouse gas emission in sugarcane used for bioenergy. MenosAbstract: The environmental benefits of producing biofuels from sugarcane have been questioned due to greenhouse gas emissions during the biomass production stage, especially nitrous oxide (N2O) associated with nitrogen (N) fertilization. The objective of this work was to evaluate the use of nitrification inhibitors (NIs) dicyandiamide (DCD) and 3,4 dimethylpyrazole phosphate (DMPP) and a controlled-release fertilizer (CRF) to reduce N2O emissions from urea, applied at a rate of 120 kg ha?1 of N. Two field experiments in ratoon cycle sugarcane were performed in Brazil. The treatments were (i) no N (control), (ii) urea, (iii) urea+DCD, (iv) urea+DMPP, and (v) CRF. Measurements of N2O fluxes were performed using static chambers with four replications. The measurements were conducted three times per week during the first 3 mo and biweekly afterward for a total of 217 and 382 d in the first and second seasons, respectively. The cumulative N2O?N emissions in the first ratoon cycle were 1098 g ha?1 in the control treatment and 1924 g ha?1 with urea (0.7% of the total N applied). Addition of NIs to urea reduced N2O emissions by more than 90%, which did not differ from those of the plots without N. The CRF treatment showed N2O emissions no different from those of urea. The results were similar in the second ratoon: the treatment with urea showed N2O emissions of 0.75% of N applied N. Application of NIs resulted in a strong reduction in N2O emissions, but CRF increased emissions comp... Mostrar Tudo |
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Palavras-Chave: |
Óxido nítrico. |
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Thesagro: |
Cana de açúcar; Fertilizante; Impacto ambiental; Ureia. |
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Thesaurus Nal: |
Environmental impact; Greenhouse effect; Nitrogen fertilizers; Nitrous oxide; Sugarcane; Urea. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/122245/1/2014AP65.pdf
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Marc: |
LEADER 02572naa a2200325 a 4500
001 2013414
005 2015-04-13
008 2015 bl uuuu u00u1 u #d
100 1 $aSOARES, J. R
245 $aEnhanced-efficiency fertilizers in nitrous oxide emissions from urea applied to sugarcane.$h[electronic resource]
260 $c2015
520 $aAbstract: The environmental benefits of producing biofuels from sugarcane have been questioned due to greenhouse gas emissions during the biomass production stage, especially nitrous oxide (N2O) associated with nitrogen (N) fertilization. The objective of this work was to evaluate the use of nitrification inhibitors (NIs) dicyandiamide (DCD) and 3,4 dimethylpyrazole phosphate (DMPP) and a controlled-release fertilizer (CRF) to reduce N2O emissions from urea, applied at a rate of 120 kg ha?1 of N. Two field experiments in ratoon cycle sugarcane were performed in Brazil. The treatments were (i) no N (control), (ii) urea, (iii) urea+DCD, (iv) urea+DMPP, and (v) CRF. Measurements of N2O fluxes were performed using static chambers with four replications. The measurements were conducted three times per week during the first 3 mo and biweekly afterward for a total of 217 and 382 d in the first and second seasons, respectively. The cumulative N2O?N emissions in the first ratoon cycle were 1098 g ha?1 in the control treatment and 1924 g ha?1 with urea (0.7% of the total N applied). Addition of NIs to urea reduced N2O emissions by more than 90%, which did not differ from those of the plots without N. The CRF treatment showed N2O emissions no different from those of urea. The results were similar in the second ratoon: the treatment with urea showed N2O emissions of 0.75% of N applied N. Application of NIs resulted in a strong reduction in N2O emissions, but CRF increased emissions compared with urea. We therefore conclude that both NIs can be options for mitigation of greenhouse gas emission in sugarcane used for bioenergy.
650 $aEnvironmental impact
650 $aGreenhouse effect
650 $aNitrogen fertilizers
650 $aNitrous oxide
650 $aSugarcane
650 $aUrea
650 $aCana de açúcar
650 $aFertilizante
650 $aImpacto ambiental
650 $aUreia
653 $aÓxido nítrico
700 1 $aCANTARELLA, H.
700 1 $aVARGAS, V. P
700 1 $aCARMO, J. B. do
700 1 $aMARTINS, A. A
700 1 $aSOUSA, R. de M.
700 1 $aANDRADE, C. A. de
773 $tJournal of Environmental Quality, Madison$gv. 44. n. 2, p. 423-430, 2015.
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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| Registros recuperados : 2 | |
| 1. |  | VARGAS, V. P; CANTARELLA, H.; MARTINS, A. A; SOUSA, R. de M.; SOARES, J. R; ANDRADE, C. A. de. Emissão de óxido nitroso de solos cultivados com cana-de-açúcar. In: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 34., 2013, Florianópolis. Ciência do solo: para quê e para quem: anais. Florianópolis: Sociedade Brasileira de Ciência do Solo, 2013. 4 p.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| 2. | | SOARES, J. R; CANTARELLA, H.; VARGAS, V. P; CARMO, J. B. do; MARTINS, A. A; SOUSA, R. de M.; ANDRADE, C. A. de. Enhanced-efficiency fertilizers in nitrous oxide emissions from urea applied to sugarcane. Journal of Environmental Quality, Madison, v. 44. n. 2, p. 423-430, 2015.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| Registros recuperados : 2 | |
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