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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
07/07/2009 |
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Data da última atualização: |
04/11/2015 |
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Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
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Autoria: |
MACHADO, A. M. B.; CASALINHO, H. D.; MONTOYA VILCAHUAMAN, L. J. |
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Afiliação: |
ANTONIO MACIEL BOTELHO MACHADO, CNPF; Helvio Debli Casalinho, PPG/SPAF/UFPel; Luciano Javier Montoya Vilcahuaman, Embrapa Florestas. |
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Título: |
A participação como instrumento metodológico na construção de um sistema agroflorestal em área de reserva legal no assentamento Olga Benário, em Santa Tereza do Oeste, Estado do Paraná. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE SISTEMAS AGROFLORESTAIS, 7., 2009, Luziânia. Diálogo e integração de saberes em sistemas agroflorestais para sociedades sustentáveis: trabalhos. [S.l.]: SBSAF; [Brasília, DF]: EMATER-DF: Embrapa, 2009. |
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Descrição Física: |
1 CD-ROM. |
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Idioma: |
Português |
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Palavras-Chave: |
Agroecologia; Indicador de sustentabilidade; Representação social. |
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Thesagro: |
Agricultura Familiar; Reforma Agrária. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/132456/1/2009-Machado-AParticipacao.pdf.pdf
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Marc: |
LEADER 00903nam a2200193 a 4500
001 1285108
005 2015-11-04
008 2009 bl uuuu u00u1 u #d
100 1 $aMACHADO, A. M. B.
245 $aA participação como instrumento metodológico na construção de um sistema agroflorestal em área de reserva legal no assentamento Olga Benário, em Santa Tereza do Oeste, Estado do Paraná.
260 $aIn: CONGRESSO BRASILEIRO DE SISTEMAS AGROFLORESTAIS, 7., 2009, Luziânia. Diálogo e integração de saberes em sistemas agroflorestais para sociedades sustentáveis: trabalhos. [S.l.]: SBSAF; [Brasília, DF]: EMATER-DF: Embrapa$c2009
300 $c1 CD-ROM.
650 $aAgricultura Familiar
650 $aReforma Agrária
653 $aAgroecologia
653 $aIndicador de sustentabilidade
653 $aRepresentação social
700 1 $aCASALINHO, H. D.
700 1 $aMONTOYA VILCAHUAMAN, L. J.
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Registro original: |
Embrapa Florestas (CNPF) |
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Biblioteca |
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Origem |
Tipo/Formato |
Classificação |
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Registro |
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URL |
Voltar
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Trigo. Para informações adicionais entre em contato com cnpt.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Florestas; Embrapa Trigo. |
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Data corrente: |
07/04/2022 |
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Data da última atualização: |
19/03/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 4 |
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Autoria: |
FERREIRA, L. A. R.; SILVA, S. R.; KÖLLN, O. T. |
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Afiliação: |
LETÍCIA APARECIDA RONQUI FERREIRA, UENP; SERGIO RICARDO SILVA, CNPF; ORIEL TIAGO KÖLLN, UENP. |
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Título: |
Wheat yield and nitrogen utilization efficiency affected by urea coated with nbpt urease inhibitor and environmental conditions in brazilian rhodic oxisols. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
International Journal of Plant Production, v. 16, p. 313-328, 2022. |
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DOI: |
https://doi.org/10.1007/s42106-022-00191-7 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Urea is the main nitrogen (N) fertilizer used in the wheat crop, but it is susceptible to volatilization losses. These losses can be reduced by urease inhibitors such as N-(n-butyl) thiophosphoric triamide (NBPT). This study evaluated wheat yield and N utilization efficiency (NUtE) of the cultivar BRS Gralha-Azul in response to N levels, to urea coated with different levels of NBPT, to the timings of N fertilization, and to environmental conditions experienced in-season in Brazilian Rhodic Oxisols. The experiment was carried out in three environments: Londrina under rainfed and irrigated conditions, and Ponta Grossa under rainfed conditions. Agronomic features related to N plant nutrition and wheat yield were assessed. Environmental conditions determined the effectiveness of N fertilization and NBPT on NUtE and grain yield. In Londrina, irrigation improved the density of fertile spikes and the N concentration and N accumulation in shoot dry matter, which contributed to increase grain yield by 39%. Nitrogen fertilization increased NUtE for shoot dry matter production in all the environments, and reduced NUtE for grain yield only in Londrina under rainfed conditions. NBPT is not effective under acid soil conditions combined with high water availability. Nitrogen fertilizer applied only at sowing may be enough for the spring wheat crop to achieve its yield capacity in subtropical environments. The management of N fertilization and NBPT can be improved if the historical data on environmental features throughout the wheat-growing season are considered. An alternative for increasing grain yield under drought conditions is to improve plant N uptake by increasing the N concentration in the soil solution via N fertilization. The optimal level of NBPT for coating urea depends on the N fertilizer level applied to wheat crop, as well as on the timing of N fertilization. Thus, the most suitable procedure for wheat farmers would be to customize the NBPT level according to their specific environmental conditions and N fertilization management practices, instead of purchasing N fertilizer with a single NBPT level. MenosAbstract: Urea is the main nitrogen (N) fertilizer used in the wheat crop, but it is susceptible to volatilization losses. These losses can be reduced by urease inhibitors such as N-(n-butyl) thiophosphoric triamide (NBPT). This study evaluated wheat yield and N utilization efficiency (NUtE) of the cultivar BRS Gralha-Azul in response to N levels, to urea coated with different levels of NBPT, to the timings of N fertilization, and to environmental conditions experienced in-season in Brazilian Rhodic Oxisols. The experiment was carried out in three environments: Londrina under rainfed and irrigated conditions, and Ponta Grossa under rainfed conditions. Agronomic features related to N plant nutrition and wheat yield were assessed. Environmental conditions determined the effectiveness of N fertilization and NBPT on NUtE and grain yield. In Londrina, irrigation improved the density of fertile spikes and the N concentration and N accumulation in shoot dry matter, which contributed to increase grain yield by 39%. Nitrogen fertilization increased NUtE for shoot dry matter production in all the environments, and reduced NUtE for grain yield only in Londrina under rainfed conditions. NBPT is not effective under acid soil conditions combined with high water availability. Nitrogen fertilizer applied only at sowing may be enough for the spring wheat crop to achieve its yield capacity in subtropical environments. The management of N fertilization and NBPT can be improved if the historica... Mostrar Tudo |
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Palavras-Chave: |
Ammonia volatilization; Eficiência no uso de nitrogênio; N-(n-butyl) thiophosphoric triamide; Nitrogen use efciency; Volatilização de amônia. |
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Thesagro: |
Fertilizante Nitrogenado; Triticum Aestivum. |
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Thesaurus NAL: |
Nitrogen fertilizers. |
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Categoria do assunto: |
--
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 03077naa a2200253 a 4500
001 2163000
005 2024-03-19
008 2022 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s42106-022-00191-7$2DOI
100 1 $aFERREIRA, L. A. R.
245 $aWheat yield and nitrogen utilization efficiency affected by urea coated with nbpt urease inhibitor and environmental conditions in brazilian rhodic oxisols.$h[electronic resource]
260 $c2022
520 $aAbstract: Urea is the main nitrogen (N) fertilizer used in the wheat crop, but it is susceptible to volatilization losses. These losses can be reduced by urease inhibitors such as N-(n-butyl) thiophosphoric triamide (NBPT). This study evaluated wheat yield and N utilization efficiency (NUtE) of the cultivar BRS Gralha-Azul in response to N levels, to urea coated with different levels of NBPT, to the timings of N fertilization, and to environmental conditions experienced in-season in Brazilian Rhodic Oxisols. The experiment was carried out in three environments: Londrina under rainfed and irrigated conditions, and Ponta Grossa under rainfed conditions. Agronomic features related to N plant nutrition and wheat yield were assessed. Environmental conditions determined the effectiveness of N fertilization and NBPT on NUtE and grain yield. In Londrina, irrigation improved the density of fertile spikes and the N concentration and N accumulation in shoot dry matter, which contributed to increase grain yield by 39%. Nitrogen fertilization increased NUtE for shoot dry matter production in all the environments, and reduced NUtE for grain yield only in Londrina under rainfed conditions. NBPT is not effective under acid soil conditions combined with high water availability. Nitrogen fertilizer applied only at sowing may be enough for the spring wheat crop to achieve its yield capacity in subtropical environments. The management of N fertilization and NBPT can be improved if the historical data on environmental features throughout the wheat-growing season are considered. An alternative for increasing grain yield under drought conditions is to improve plant N uptake by increasing the N concentration in the soil solution via N fertilization. The optimal level of NBPT for coating urea depends on the N fertilizer level applied to wheat crop, as well as on the timing of N fertilization. Thus, the most suitable procedure for wheat farmers would be to customize the NBPT level according to their specific environmental conditions and N fertilization management practices, instead of purchasing N fertilizer with a single NBPT level.
650 $aNitrogen fertilizers
650 $aFertilizante Nitrogenado
650 $aTriticum Aestivum
653 $aAmmonia volatilization
653 $aEficiência no uso de nitrogênio
653 $aN-(n-butyl) thiophosphoric triamide
653 $aNitrogen use efciency
653 $aVolatilização de amônia
700 1 $aSILVA, S. R.
700 1 $aKÖLLN, O. T.
773 $tInternational Journal of Plant Production$gv. 16, p. 313-328, 2022.
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