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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
31/05/2016 |
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Data da última atualização: |
19/05/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CONTRERAS ESPINAL, F. S.; SILVA, E. C. da; MURAOKA, T.; FRANZINI, V. I.; TRIVELIN, P. C. O.; TEIXEIRA, M. B.; SAKADEVAN, K. |
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Afiliação: |
Freddy Sinencio Contreras Espinal, Dominican Institute for Agriculture, Livestock and Forest (IDIAF); Edson Cabral da Silva, USP/CENA; Takashi Muraoka, USP/CENA; VINICIUS IDE FRANZINI, CPATU; Paulo César Ocheuze Trivelin, USP/CENA; Marconi Batista Teixeira, Instituto Federal Goiano – Campus Rio Verde; Karuppan Sakadevan, International Atomic Energy Agency. |
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Título: |
Utilization of nitrogen (15N) from urea and green manures by rice as affected by nitrogen fertilizer rate. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
African Journal of Agricultural Research, v. 11, n. 13, p. 1171-1180, Mar. 2016. |
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DOI: |
10.5897/AJAR2015.10684 |
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Idioma: |
Inglês |
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Conteúdo: |
The use of green manures (GMs) in combination with nitrogen (N) fertilizer application is a promising practice to improve N fertilizer management in agricultural production systems. The main objective of this study was to evaluate the N use efficiency (NUE) of rice plant, derived from GMs including sunn hemp (Crotalaria juncea L.), millet (Pennisetum glaucum L.) and urea in the greenhouse. The experimental treatments included two GMs (sunn hemp-15N and millet-15N), absence of N organic source (without GM residues in soil) and four N rates, as urea-15N (0, 28.6, 57.2 and 85.8 mg N kg-1). The results showed that both rice grain and straw biomass yields under sunn hemp were greater than that of millet or without the application of GM. The NUE of rice under sunn hemp was greater than that under millet (18.9 and 7.8% under sunn hemp and millet, respectively). The urea N application rates did not affect the fertilizer NUE by rice (53.7%) with or without GMs. The NUE of GMs by rice plants ranged from 14.1% and 16.8% for root and shoot, respectively. The study showed that green manures can play an important role in enhancing soil fertility and N supply to subsequent crops. |
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Palavras-Chave: |
Isotopic diluition; Nitrogen mineralization; Oryza sativa L. |
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Thesagro: |
Arroz; Nitrogênio. |
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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/143551/1/830BE3B57851.pdf
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Marc: |
LEADER 02016naa a2200265 a 4500
001 2045905
005 2022-05-19
008 2016 bl uuuu u00u1 u #d
024 7 $a10.5897/AJAR2015.10684$2DOI
100 1 $aCONTRERAS ESPINAL, F. S.
245 $aUtilization of nitrogen (15N) from urea and green manures by rice as affected by nitrogen fertilizer rate.$h[electronic resource]
260 $c2016
520 $aThe use of green manures (GMs) in combination with nitrogen (N) fertilizer application is a promising practice to improve N fertilizer management in agricultural production systems. The main objective of this study was to evaluate the N use efficiency (NUE) of rice plant, derived from GMs including sunn hemp (Crotalaria juncea L.), millet (Pennisetum glaucum L.) and urea in the greenhouse. The experimental treatments included two GMs (sunn hemp-15N and millet-15N), absence of N organic source (without GM residues in soil) and four N rates, as urea-15N (0, 28.6, 57.2 and 85.8 mg N kg-1). The results showed that both rice grain and straw biomass yields under sunn hemp were greater than that of millet or without the application of GM. The NUE of rice under sunn hemp was greater than that under millet (18.9 and 7.8% under sunn hemp and millet, respectively). The urea N application rates did not affect the fertilizer NUE by rice (53.7%) with or without GMs. The NUE of GMs by rice plants ranged from 14.1% and 16.8% for root and shoot, respectively. The study showed that green manures can play an important role in enhancing soil fertility and N supply to subsequent crops.
650 $aArroz
650 $aNitrogênio
653 $aIsotopic diluition
653 $aNitrogen mineralization
653 $aOryza sativa L
700 1 $aSILVA, E. C. da
700 1 $aMURAOKA, T.
700 1 $aFRANZINI, V. I.
700 1 $aTRIVELIN, P. C. O.
700 1 $aTEIXEIRA, M. B.
700 1 $aSAKADEVAN, K.
773 $tAfrican Journal of Agricultural Research$gv. 11, n. 13, p. 1171-1180, Mar. 2016.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Solos. Para informações adicionais entre em contato com cnps.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
18/07/2022 |
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Data da última atualização: |
13/02/2023 |
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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: |
SILVA, L. Q. da; HUTHER, C. M.; RODRIGUES, N. F.; OLIVEIRA, J. R. de; CORREIA, D. M.; FERREIRA, B. G.; FERREIRA, V. F.; PEREIRA, M. de O.; ASSUNÇÃO, B. de C.; CORRÊA, G. M.; VALERIANO, F. R.; NOBREGA, L. P.; CECCHIN, D.; MACHADO, T.; TAVARES, S. R. de L.; PEREIRA, C. |
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Afiliação: |
LARISSA QUIRINO DA SILVA, UFRJ; CRISTINA MOLL HUTHER, UFF; NATALIA FERNANDES RODRIGUES, UFF; JULIA RAMOS DE OLIVEIRA, UFF; DANIELA MARQUES CORREIA, UFF; BRUNO GARCIA FERREIRA, UFRJ; VITOR FRANCISCO FERREIRA, UFF; MARIANA DE OLIVEIRA PEREIRA, UEM; BRUNA DE CARVALHO ASSUNÇÃO, UFF; GABRIELA MARTINS CORRÊA, UFF; FILIPE RODRIGUES VALERIANO, UFRJ; LETICIA PONTICEL NOBREGA, UFRJ; DAIANE CECCHIN, UFF; THELMA MACHADO, UFF; SILVIO ROBERTO DE LUCENA TAVARES, CNPS; CARLOS PEREIRA, UFF. |
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Título: |
Morphophysiological responses of comfrey (Symphytum officinale) to water deficit. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Plant Biosystems, v. 157, n. 1, p. 89-101, 2023. |
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DOI: |
https://doi.org/10.1080/11263504.2022.2089763 |
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Idioma: |
Inglês |
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Conteúdo: |
Symphytum officinale, comfrey, is a medicinal plant known for its healing properties. On the growing conditions and physiological responses of this plant to stress are scarce. We aimed to assess the morphophysiological responses of comfrey to short-term severe water restriction (seven days) and to a control treatment under irrigation. Climatological data, growth parameters, pigment content, stomatal conductance, chlorophyll a fluorescence, Normalized Difference Vegetation Index, plant morphological responses, and anatomical differences of roots were evaluated. Symptoms of water deficit were evident from the third day onwards, such as leaf wilt and senescence of a greater quantity of leaves, as well as reduction of stomatal conductance. Photochemical activities were affected in the first days, with less intensity on the seventh day for the photosystem II performance index (PIabs). The plant aerial parts were more visually affected than the roots, which showed secondary growth after the water restriction imposition, a possible response of tuberization to drought. The water deficit affected the growth and metabolism of comfrey plants, but adjustments in photosynthetic apparatus and increased dry mass productivity indicated a possible adjustment to severe drought. Further experiments are needed to assess whether there is a viability of the root system after shoot senescence due to extreme drought. |
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Palavras-Chave: |
Chlorophyll a fluorescence; Primary metabolism; Secondary growth. |
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Thesagro: |
Boraginaceae. |
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Thesaurus NAL: |
Drought; Stomatal conductance. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02542naa a2200385 a 4500
001 2144758
005 2023-02-13
008 2023 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1080/11263504.2022.2089763$2DOI
100 1 $aSILVA, L. Q. da
245 $aMorphophysiological responses of comfrey (Symphytum officinale) to water deficit.$h[electronic resource]
260 $c2023
520 $aSymphytum officinale, comfrey, is a medicinal plant known for its healing properties. On the growing conditions and physiological responses of this plant to stress are scarce. We aimed to assess the morphophysiological responses of comfrey to short-term severe water restriction (seven days) and to a control treatment under irrigation. Climatological data, growth parameters, pigment content, stomatal conductance, chlorophyll a fluorescence, Normalized Difference Vegetation Index, plant morphological responses, and anatomical differences of roots were evaluated. Symptoms of water deficit were evident from the third day onwards, such as leaf wilt and senescence of a greater quantity of leaves, as well as reduction of stomatal conductance. Photochemical activities were affected in the first days, with less intensity on the seventh day for the photosystem II performance index (PIabs). The plant aerial parts were more visually affected than the roots, which showed secondary growth after the water restriction imposition, a possible response of tuberization to drought. The water deficit affected the growth and metabolism of comfrey plants, but adjustments in photosynthetic apparatus and increased dry mass productivity indicated a possible adjustment to severe drought. Further experiments are needed to assess whether there is a viability of the root system after shoot senescence due to extreme drought.
650 $aDrought
650 $aStomatal conductance
650 $aBoraginaceae
653 $aChlorophyll a fluorescence
653 $aPrimary metabolism
653 $aSecondary growth
700 1 $aHUTHER, C. M.
700 1 $aRODRIGUES, N. F.
700 1 $aOLIVEIRA, J. R. de
700 1 $aCORREIA, D. M.
700 1 $aFERREIRA, B. G.
700 1 $aFERREIRA, V. F.
700 1 $aPEREIRA, M. de O.
700 1 $aASSUNÇÃO, B. de C.
700 1 $aCORRÊA, G. M.
700 1 $aVALERIANO, F. R.
700 1 $aNOBREGA, L. P.
700 1 $aCECCHIN, D.
700 1 $aMACHADO, T.
700 1 $aTAVARES, S. R. de L.
700 1 $aPEREIRA, C.
773 $tPlant Biosystems$gv. 157, n. 1, p. 89-101, 2023.
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Embrapa Solos (CNPS) |
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