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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agrobiologia. Para informações adicionais entre em contato com cnpab.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
03/07/2017 |
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Data da última atualização: |
04/12/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MARTINS, M. R.; SANTANNA, S. A. C.; ZAMANC, B. M.; SANTOS, R. C.; MONTEIRO, R. C.; ALVES, B. J. R.; JANTALIA, C. P.; BODDEY, R. M.; URQUIAGA, S. |
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Afiliação: |
UFRRJ; UFRRJ; SOIL and WATER MANAGEMENT & CROP NUTRITION, FAO AUSTRIA; UFRRJ; BRUNO JOSE RODRIGUES ALVES, CNPAB; CLAUDIA POZZI JANTALIA, CNPAB; ROBERT MICHAEL BODDEY, CNPAB; SEGUNDO SACRAMENTO U CABALLERO, CNPAB. |
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Título: |
Strategies for the use of urease and nitrification inhibitors with urea: impact on N2O and NH3 emissions, fertilizer-15N recovery and maize yield in a tropical soil. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Agriculture, Ecosystems & Environment, v. 247, n. 1, p. 54-62, 2017. |
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ISSN: |
0167-8809 |
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DOI: |
https://doi.org/10.1016/j.agee.2017.06.021 |
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Idioma: |
Inglês |
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Conteúdo: |
Maize production accounts for the largest proportion of synthetic fertilizer-N used in Brazil, with most of it being urea. The use of this fertilizer raises significant agronomic and environmental concerns due to an elevated risk of gaseous N losses, resulting in low fertilizer-N recovery by plants and increasing anthropogenic greenhouse gas (GHG) emissions. In a field trial on a tropical Acrisol, we quantified the N losses caused by the gaseous emissions of NH3 and N2O and the grain yield and recovery of 15N-fertilizer by maize plants treated with urea with added nitrapyrin or N-(n-butyl) thiophosphoric triamide (NBPT). Under conditions favorable for gaseous N loss from fertilizers, nitrapyrin reduced the cumulative N2O emission by 49% over a period of 30 days after the subsurface application of side-banded urea (50 kg N ha−1) during maize sowing. The use of NBPT delayed urea hydrolysis and reduced the NH3 volatilization by 35%, which represents a significant reduction in indirect N2O emission due to subsequent atmospheric deposition. The use of nitrapyrin during sowing and NBPT during the V5 stage of maize growth enhanced urea-15N recovery by 53% and increased maize grain yield by 1.5 t ha−1 compared to regular urea. Our results indicate that considering the main potential N losses according to timing and placement of fertilizer, the specific use of inhibitors represents an efficient strategy to improve the urea-N recovery and the maize grain yield. The use of nitrification inhibitors can play an effective role in mitigating N2O emissions from typical N fertilization practices in maize-producing areas in Brazil. This study also indicates the need for considering indirect emissions in the overall balance of N2O emissions derived from enhanced-efficiency fertilizers. MenosMaize production accounts for the largest proportion of synthetic fertilizer-N used in Brazil, with most of it being urea. The use of this fertilizer raises significant agronomic and environmental concerns due to an elevated risk of gaseous N losses, resulting in low fertilizer-N recovery by plants and increasing anthropogenic greenhouse gas (GHG) emissions. In a field trial on a tropical Acrisol, we quantified the N losses caused by the gaseous emissions of NH3 and N2O and the grain yield and recovery of 15N-fertilizer by maize plants treated with urea with added nitrapyrin or N-(n-butyl) thiophosphoric triamide (NBPT). Under conditions favorable for gaseous N loss from fertilizers, nitrapyrin reduced the cumulative N2O emission by 49% over a period of 30 days after the subsurface application of side-banded urea (50 kg N ha−1) during maize sowing. The use of NBPT delayed urea hydrolysis and reduced the NH3 volatilization by 35%, which represents a significant reduction in indirect N2O emission due to subsequent atmospheric deposition. The use of nitrapyrin during sowing and NBPT during the V5 stage of maize growth enhanced urea-15N recovery by 53% and increased maize grain yield by 1.5 t ha−1 compared to regular urea. Our results indicate that considering the main potential N losses according to timing and placement of fertilizer, the specific use of inhibitors represents an efficient strategy to improve the urea-N recovery and the maize grain yield. The use of ... Mostrar Tudo |
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Palavras-Chave: |
Greenhouse gas; Isotope; N stabilizer; Tropical soil. |
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Thesaurus Nal: |
nitrapyrin. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02771naa a2200301 a 4500
001 2071907
005 2017-12-04
008 2017 bl uuuu u00u1 u #d
022 $a0167-8809
024 7 $ahttps://doi.org/10.1016/j.agee.2017.06.021$2DOI
100 1 $aMARTINS, M. R.
245 $aStrategies for the use of urease and nitrification inhibitors with urea$bimpact on N2O and NH3 emissions, fertilizer-15N recovery and maize yield in a tropical soil.$h[electronic resource]
260 $c2017
520 $aMaize production accounts for the largest proportion of synthetic fertilizer-N used in Brazil, with most of it being urea. The use of this fertilizer raises significant agronomic and environmental concerns due to an elevated risk of gaseous N losses, resulting in low fertilizer-N recovery by plants and increasing anthropogenic greenhouse gas (GHG) emissions. In a field trial on a tropical Acrisol, we quantified the N losses caused by the gaseous emissions of NH3 and N2O and the grain yield and recovery of 15N-fertilizer by maize plants treated with urea with added nitrapyrin or N-(n-butyl) thiophosphoric triamide (NBPT). Under conditions favorable for gaseous N loss from fertilizers, nitrapyrin reduced the cumulative N2O emission by 49% over a period of 30 days after the subsurface application of side-banded urea (50 kg N ha−1) during maize sowing. The use of NBPT delayed urea hydrolysis and reduced the NH3 volatilization by 35%, which represents a significant reduction in indirect N2O emission due to subsequent atmospheric deposition. The use of nitrapyrin during sowing and NBPT during the V5 stage of maize growth enhanced urea-15N recovery by 53% and increased maize grain yield by 1.5 t ha−1 compared to regular urea. Our results indicate that considering the main potential N losses according to timing and placement of fertilizer, the specific use of inhibitors represents an efficient strategy to improve the urea-N recovery and the maize grain yield. The use of nitrification inhibitors can play an effective role in mitigating N2O emissions from typical N fertilization practices in maize-producing areas in Brazil. This study also indicates the need for considering indirect emissions in the overall balance of N2O emissions derived from enhanced-efficiency fertilizers.
650 $anitrapyrin
653 $aGreenhouse gas
653 $aIsotope
653 $aN stabilizer
653 $aTropical soil
700 1 $aSANTANNA, S. A. C.
700 1 $aZAMANC, B. M.
700 1 $aSANTOS, R. C.
700 1 $aMONTEIRO, R. C.
700 1 $aALVES, B. J. R.
700 1 $aJANTALIA, C. P.
700 1 $aBODDEY, R. M.
700 1 $aURQUIAGA, S.
773 $tAgriculture, Ecosystems & Environment$gv. 247, n. 1, p. 54-62, 2017.
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