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Registro Completo |
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
09/06/2008 |
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Data da última atualização: |
30/03/2023 |
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Autoria: |
CONCEIÇÃO, P. M. da; VIEIRA, H. D.; CANELLAS, L. P.; MARQUES JÚNIOR, R. B.; OLIVARES, F. L. |
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Afiliação: |
Patrícia Marluci da Conceição, Universidade Estadual do Norte Fluminense - UENF/Laboratório de Fitotecnia; Henrique Duarte Vieira, Universidade Estadual do Norte Fluminense - UENF/Laboratório de Fitotecnia; Luciano Pasqualoto Canellas, Universidade Estadual do Norte Fluminense - UENF/Laboratório de Solos; Roberto Batista Marques Júnior, Universidade Estadual do Norte Fluminense - UENF/Laboratório de Solos; Fábio Lopes Olivares, Universidade Estadual do Norte Fluminense - UENF/Laboratório de Biologia Celular e Tecidual. |
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Título: |
Recobrimento de sementes de milho com ácidos húmicos e bactérias diazotróficas endofíticas. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 43, n. 4, p. 545-548, abr. 2008 |
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Idioma: |
Português |
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Notas: |
Notas Científicas.
Título em inglês: Corn seed coating with humic acids and endophytic diazotrophic bacteria. |
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Conteúdo: |
O objetivo deste trabalho foi avaliar o efeito do recobrimento de sementes de milho com ácidos húmicos (AH), bactérias diazotróficas endofíticas e o uso em conjunto de AH e bactérias diazotróficas endofíticas, na estimulação do crescimento vegetal e na população de bactérias estabelecidas na planta hospedeira. A adição de AH, bactérias e o uso em conjunto estimularam o crescimento vegetal. Os AH utilizados no recobrimento de sementes de milho têm menor capacidade de estimular o crescimento radicular, em comparação ao uso em solução. O recobrimento de sementes é uma opção de inoculação de bactérias diazotróficas endofíticas da espécie Herbaspirillum seropedicae (Z67). |
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Palavras-Chave: |
bioestimulantes; biostimulation; lime. |
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Thesagro: |
Calcário; Zea Mays. |
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Thesaurus Nal: |
Herbaspirillum seropedicae. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/38813/1/43n04a15.pdf
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Marc: |
LEADER 01580naa a2200253 a 4500
001 1124229
005 2023-03-30
008 2008 bl uuuu u00u1 u #d
100 1 $aCONCEIÇÃO, P. M. da
245 $aRecobrimento de sementes de milho com ácidos húmicos e bactérias diazotróficas endofíticas.$h[electronic resource]
260 $c2008
500 $aNotas Científicas. Título em inglês: Corn seed coating with humic acids and endophytic diazotrophic bacteria.
520 $aO objetivo deste trabalho foi avaliar o efeito do recobrimento de sementes de milho com ácidos húmicos (AH), bactérias diazotróficas endofíticas e o uso em conjunto de AH e bactérias diazotróficas endofíticas, na estimulação do crescimento vegetal e na população de bactérias estabelecidas na planta hospedeira. A adição de AH, bactérias e o uso em conjunto estimularam o crescimento vegetal. Os AH utilizados no recobrimento de sementes de milho têm menor capacidade de estimular o crescimento radicular, em comparação ao uso em solução. O recobrimento de sementes é uma opção de inoculação de bactérias diazotróficas endofíticas da espécie Herbaspirillum seropedicae (Z67).
650 $aHerbaspirillum seropedicae
650 $aCalcário
650 $aZea Mays
653 $abioestimulantes
653 $abiostimulation
653 $alime
700 1 $aVIEIRA, H. D.
700 1 $aCANELLAS, L. P.
700 1 $aMARQUES JÚNIOR, R. B.
700 1 $aOLIVARES, F. L.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 43, n. 4, p. 545-548, abr. 2008
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Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
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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. |
Registro Completo
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
28/09/2022 |
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Data da última atualização: |
28/09/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
ALVAREZ, C.; ÁLVAREZ, C. R.; COSTANTINI, A. O.; ALVES, B. J. R. |
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Afiliação: |
INTA; Universidad de Buenos Aires; ALEJANDRO O. COSTANTINI, INTA; BRUNO JOSE RODRIGUES ALVES, CNPAB. |
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Título: |
Soil nitrous oxide emissions in a maize (Zea mays L.) crop in response to nitrogen fertilisation. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Soil Research, Published online: 13 June 2022. |
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ISSN: |
1838-675X |
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DOI: |
https://doi.org/10.1071/SR21094 |
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Idioma: |
Inglês |
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Conteúdo: |
Context: An appropriate use of the fertiliser technology may lead to a more efficient N absorption and to the reduction of economic and environmental costs. Aims: This study sought to quantify N2O emissions generated from soil and the residual nitrate (NO3?) up to 2 m depth in field conditions in a maize crop under supplementary irrigation and fertilised with two nitrogen (N) sources (UAN and urea) at increasing N rates (0, 80, 160 and 250 kg N ha?1) in the Semi-arid Argentine Pampas. Methods: Throughout the crop cycle, emissions were monitored daily with static chambers during the first week after fertilisation; then sampling frequency was gradually reduced until the end of the experiment. Key results: There were no yield responses to the use of different sources and N rates. Crop N uptake saturated at 80 kg N ha?1, reaching 300?310 kg N ha?1. Residual NO3? increased significantly with the highest rates of N fertiliser. Total N2O emissions differed significantly only among fertiliser rates. The N2O emissions were lower at 80 than at 160 and 250 kg N ha?1. Conclusions: The N2O emissions measured were lower than those calculated by the IPCC, even when only direct emissions were considered. No grain yield increase was observed due to N fertilisation, with a non-limiting supply of N-NO3? at the beginning of the crop cycle and of N from mineralisation. Implications: This excess of N can generate negative environmental effects due to higher emissions of N2O and residual N-NO3? that can be leached. MenosContext: An appropriate use of the fertiliser technology may lead to a more efficient N absorption and to the reduction of economic and environmental costs. Aims: This study sought to quantify N2O emissions generated from soil and the residual nitrate (NO3?) up to 2 m depth in field conditions in a maize crop under supplementary irrigation and fertilised with two nitrogen (N) sources (UAN and urea) at increasing N rates (0, 80, 160 and 250 kg N ha?1) in the Semi-arid Argentine Pampas. Methods: Throughout the crop cycle, emissions were monitored daily with static chambers during the first week after fertilisation; then sampling frequency was gradually reduced until the end of the experiment. Key results: There were no yield responses to the use of different sources and N rates. Crop N uptake saturated at 80 kg N ha?1, reaching 300?310 kg N ha?1. Residual NO3? increased significantly with the highest rates of N fertiliser. Total N2O emissions differed significantly only among fertiliser rates. The N2O emissions were lower at 80 than at 160 and 250 kg N ha?1. Conclusions: The N2O emissions measured were lower than those calculated by the IPCC, even when only direct emissions were considered. No grain yield increase was observed due to N fertilisation, with a non-limiting supply of N-NO3? at the beginning of the crop cycle and of N from mineralisation. Implications: This excess of N can generate negative environmental effects due to higher emissions of N2O and residual N-NO3? th... Mostrar Tudo |
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Palavras-Chave: |
Argentinean Pampa; Environmental effects; Maize yield; Nitrate leaching. |
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Thesaurus NAL: |
Greenhouse gases; Irrigation; Urea. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02296naa a2200265 a 4500
001 2146959
005 2022-09-28
008 2022 bl uuuu u00u1 u #d
022 $a1838-675X
024 7 $ahttps://doi.org/10.1071/SR21094$2DOI
100 1 $aALVAREZ, C.
245 $aSoil nitrous oxide emissions in a maize (Zea mays L.) crop in response to nitrogen fertilisation.$h[electronic resource]
260 $c2022
520 $aContext: An appropriate use of the fertiliser technology may lead to a more efficient N absorption and to the reduction of economic and environmental costs. Aims: This study sought to quantify N2O emissions generated from soil and the residual nitrate (NO3?) up to 2 m depth in field conditions in a maize crop under supplementary irrigation and fertilised with two nitrogen (N) sources (UAN and urea) at increasing N rates (0, 80, 160 and 250 kg N ha?1) in the Semi-arid Argentine Pampas. Methods: Throughout the crop cycle, emissions were monitored daily with static chambers during the first week after fertilisation; then sampling frequency was gradually reduced until the end of the experiment. Key results: There were no yield responses to the use of different sources and N rates. Crop N uptake saturated at 80 kg N ha?1, reaching 300?310 kg N ha?1. Residual NO3? increased significantly with the highest rates of N fertiliser. Total N2O emissions differed significantly only among fertiliser rates. The N2O emissions were lower at 80 than at 160 and 250 kg N ha?1. Conclusions: The N2O emissions measured were lower than those calculated by the IPCC, even when only direct emissions were considered. No grain yield increase was observed due to N fertilisation, with a non-limiting supply of N-NO3? at the beginning of the crop cycle and of N from mineralisation. Implications: This excess of N can generate negative environmental effects due to higher emissions of N2O and residual N-NO3? that can be leached.
650 $aGreenhouse gases
650 $aIrrigation
650 $aUrea
653 $aArgentinean Pampa
653 $aEnvironmental effects
653 $aMaize yield
653 $aNitrate leaching
700 1 $aÁLVAREZ, C. R.
700 1 $aCOSTANTINI, A. O.
700 1 $aALVES, B. J. R.
773 $tSoil Research, Published online: 13 June 2022.
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