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Registro Completo |
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Biblioteca(s): |
Embrapa Meio-Norte. |
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Data corrente: |
25/02/2010 |
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Data da última atualização: |
21/01/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MEDINA, C. L.; SANCHES, M. C.; TUCCI, M. L. S.; SOUSA, C. A. F. de; CUZZUOL, G. R. F.; JOLY, C. A. |
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Afiliação: |
Camilo L. Medina, Universidade Estadual de Campinas; Maria Cristina Sanches, Universidade Federal de Uberlândia; Maria Luiza S. Tucci, CHORT, IAC; Carlos Antônio Ferreira de Sousa, Embrapa Meio-Norte; Geraldo Rogério F. Cuzzuol, Universidade Federal do Espírito Santo; Carlos A. Joly, Universidade Estadual de Campinas. |
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Título: |
Erythrina speciosa (Leguminosae-Papilionoideae) under soil water saturation: morphophysiological and grouwth responses. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
Annals of Botany, v. 104, n. 4, p. 671-680, 2009. |
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Idioma: |
Inglês |
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Conteúdo: |
Background and Aims Erythrina speciosa is a Neotropical tree that grows mainly in moist habitats. To characterize the physiological, morphological and growth responses to soil water saturation, young plants of E. speciosa were subjected experimentally to soil flooding. Methods Flooding was imposed from 2 to 4 cm above the soil surface in water-filled tanks for 60 d. Non-flooded (control) plants were well watered, but never flooded. The net CO2 exchange (ACO2), stomatal conductance (gs) and intercellular CO2 concentration (Ci) were assessed for 60 d. Soluble sugar and free amino acid concentrations and the proportion of free amino acids were determined at 0, 7, 10, 21, 28 and 45 d of treatments. After 28, 45 and 60 d, dry masses of leaves, stems and roots were determined. Stem and root cross-sections were viewed using light microscopy. Key Results The ACO2 and gs were severely reduced by flooding treatment, but only for the first 10 d. The soluble sugars and free amino acids increased until the tenth day but decreased subsequently. The content of asparagine in the roots showed a drastic decrease while those of alanine and g-aminobutyric increased sharply throughout the first 10 d after flooding. From the 20th day on, the flooded plants reached ACO2 and gs values similar to those observed for non-flooded plants. These events were coupled with the development of lenticels, adventitious roots and aerenchyma tissue of honeycomb type. Flooding reduced the growth rate and altered carbon allocation. The biomass allocated to the stem was higher and the root mass ratio was lower for flooded plants when compared with non-flooded plants. Conclusions Erythrina speciosa showed 100% survival until the 60th day of flooding and was able to recover its metabolism. The recovery during soil flooding seems to be associated with morphological alterations, such as development of hypertrophic lenticels, adventitious roots and aerenchyma tissue, and with the maintenance of neutral amino acids in roots under long-term exposure to root-zone O2 deprivation. MenosBackground and Aims Erythrina speciosa is a Neotropical tree that grows mainly in moist habitats. To characterize the physiological, morphological and growth responses to soil water saturation, young plants of E. speciosa were subjected experimentally to soil flooding. Methods Flooding was imposed from 2 to 4 cm above the soil surface in water-filled tanks for 60 d. Non-flooded (control) plants were well watered, but never flooded. The net CO2 exchange (ACO2), stomatal conductance (gs) and intercellular CO2 concentration (Ci) were assessed for 60 d. Soluble sugar and free amino acid concentrations and the proportion of free amino acids were determined at 0, 7, 10, 21, 28 and 45 d of treatments. After 28, 45 and 60 d, dry masses of leaves, stems and roots were determined. Stem and root cross-sections were viewed using light microscopy. Key Results The ACO2 and gs were severely reduced by flooding treatment, but only for the first 10 d. The soluble sugars and free amino acids increased until the tenth day but decreased subsequently. The content of asparagine in the roots showed a drastic decrease while those of alanine and g-aminobutyric increased sharply throughout the first 10 d after flooding. From the 20th day on, the flooded plants reached ACO2 and gs values similar to those observed for non-flooded plants. These events were coupled with the development of lenticels, adventitious roots and aerenchyma tissue of honeycomb type. Flooding reduced the growth rate and altered c... Mostrar Tudo |
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Thesagro: |
Aminoácido; Biomassa; Fotossíntese. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/116073/1/erythrina.AnnBotany.CarlosAntonio.pdf
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Marc: |
LEADER 02700naa a2200217 a 4500
001 1658827
005 2015-01-21
008 2009 bl uuuu u00u1 u #d
100 1 $aMEDINA, C. L.
245 $aErythrina speciosa (Leguminosae-Papilionoideae) under soil water saturation$bmorphophysiological and grouwth responses.
260 $c2009
520 $aBackground and Aims Erythrina speciosa is a Neotropical tree that grows mainly in moist habitats. To characterize the physiological, morphological and growth responses to soil water saturation, young plants of E. speciosa were subjected experimentally to soil flooding. Methods Flooding was imposed from 2 to 4 cm above the soil surface in water-filled tanks for 60 d. Non-flooded (control) plants were well watered, but never flooded. The net CO2 exchange (ACO2), stomatal conductance (gs) and intercellular CO2 concentration (Ci) were assessed for 60 d. Soluble sugar and free amino acid concentrations and the proportion of free amino acids were determined at 0, 7, 10, 21, 28 and 45 d of treatments. After 28, 45 and 60 d, dry masses of leaves, stems and roots were determined. Stem and root cross-sections were viewed using light microscopy. Key Results The ACO2 and gs were severely reduced by flooding treatment, but only for the first 10 d. The soluble sugars and free amino acids increased until the tenth day but decreased subsequently. The content of asparagine in the roots showed a drastic decrease while those of alanine and g-aminobutyric increased sharply throughout the first 10 d after flooding. From the 20th day on, the flooded plants reached ACO2 and gs values similar to those observed for non-flooded plants. These events were coupled with the development of lenticels, adventitious roots and aerenchyma tissue of honeycomb type. Flooding reduced the growth rate and altered carbon allocation. The biomass allocated to the stem was higher and the root mass ratio was lower for flooded plants when compared with non-flooded plants. Conclusions Erythrina speciosa showed 100% survival until the 60th day of flooding and was able to recover its metabolism. The recovery during soil flooding seems to be associated with morphological alterations, such as development of hypertrophic lenticels, adventitious roots and aerenchyma tissue, and with the maintenance of neutral amino acids in roots under long-term exposure to root-zone O2 deprivation.
650 $aAminoácido
650 $aBiomassa
650 $aFotossíntese
700 1 $aSANCHES, M. C.
700 1 $aTUCCI, M. L. S.
700 1 $aSOUSA, C. A. F. de
700 1 $aCUZZUOL, G. R. F.
700 1 $aJOLY, C. A.
773 $tAnnals of Botany$gv. 104, n. 4, p. 671-680, 2009.
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Registro original: |
Embrapa Meio-Norte (CPAMN) |
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Registro Completo
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Biblioteca(s): |
Embrapa Cerrados; Embrapa Unidades Centrais. |
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Data corrente: |
02/09/2021 |
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Data da última atualização: |
07/02/2024 |
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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: |
SOARES, J. P. G.; RAMOS, A. K. B.; BRAGA, G. J.; MARCHI, G.; OLIVEIRA, E. R.; GANDRA, J. R.; FERNANDES, F. D.; OLIVEIRA, A. D. de; MALAQUIAS, J. V.; MARTINS, E. de S. |
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Afiliação: |
JOAO PAULO GUIMARAES SOARES, CPAC; ALLAN KARDEC BRAGA RAMOS, CPAC; GUSTAVO JOSE BRAGA, CPAC; GIULIANO MARCHI, CPAC; EUCLIDES REUTER DE OLIVEIRA, Universidade Federal da Grande Dourados; JEFFERSON RODRIGUES GANDRA, Universidade Federal da Grande Dourados; FRANCISCO DUARTE FERNANDES, CPAC; ALEXSANDRA DUARTE DE OLIVEIRA, CPAC; JUACI VITORIA MALAQUIAS, CPAC; EDER DE SOUZA MARTINS, CPAC. |
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Título: |
Pasture organic management using thermopotassium and thermophosphate in the Cerrado region. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, v.56, e01469, 2021. |
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DOI: |
https://doi. org/10.1590/S1678-3921.pab2021.v56.01469 |
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Idioma: |
Inglês |
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Notas: |
Título em português: Manejo orgânico de pastagens com uso de termopotássio e termofosfato na região do Cerrado. |
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Conteúdo: |
ABSTRACT - The objective of this work was to evaluate the performance of the thermopotassium and thermophosphate agrominerals, as sources of P and K, in an organic pasture consortium of 'Marandu' Urochloa brizantha + Stylosanthes spp. in the Brazilian Cerrado. The organic management was compared with conventional farming using chemical fertilizers, during three years, in two adjacent experiments, one with and the other without previous growth of green manure (Crotalaria juncea). The management treatments were: conventional, with the application of 200 kg ha-¹ potassium chloride, 260 kg ha-¹ triple superphosphate, and 217 kg ha-¹ urea; organic, with the application of 1.0 Mg ha-¹ thermophosphate, 2.0 Mg ha-¹ termopotassium, and 7.0 Mg ha-¹ chicken manure; and control, without fertilizers. Soil fertility, dry mass production, and legume content in the pasture were evaluated. The experiment with green manure resulted in a significant increase in the soilextractable contents of P and K and in pasture productivity. In the organic treatment, due to the slow release of agromineral nutrients, long-term effects are observed on the soil-extractable contents of P and K.
RESUMO - O objetivo deste trabalho foi avaliar o desempenho dos agrominerais termopotássio e termofosfato, como fontes de P e K, em consórcio de pastagem orgânica de Urochloa brizantha 'Marandu' + Stylosanthes spp. no Cerrado brasileiro. O manejo orgânico foi comparado ao convencional com uso de fertilizantes químicos, durante três anos, em dois experimentos adjacentes, um com e outro sem cultivo prévio de adubo verde (Crotalaria juncea). Os tratamentos de manejo foram: convencional, com aplicação de 200 kg ha-¹ de cloreto de potássio, 260 kg ha-¹ de superfosfato triplo e 217 kg ha-¹ de ureia; orgânico, com aplicação de 1,0 Mg ha-¹ termopotássio, 2,0 Mg ha-¹ termofosfato e 7,0 Mg ha-¹ cama de frango; e controle, sem adubação. Foram avaliadas fertilidade do solo, produção de matéria seca e contribuição da leguminosa na pastagem. O experimento com adubação verde proporcionou aumento significativo nos teores de P e K extraíveis do solo e na produtividade da pastagem. No tratamento orgânico, devido à liberação lenta dos nutrientes dos agrominerais, são observados efeitos de longo prazo nos teores extraíveis
de P e K do solo. MenosABSTRACT - The objective of this work was to evaluate the performance of the thermopotassium and thermophosphate agrominerals, as sources of P and K, in an organic pasture consortium of 'Marandu' Urochloa brizantha + Stylosanthes spp. in the Brazilian Cerrado. The organic management was compared with conventional farming using chemical fertilizers, during three years, in two adjacent experiments, one with and the other without previous growth of green manure (Crotalaria juncea). The management treatments were: conventional, with the application of 200 kg ha-¹ potassium chloride, 260 kg ha-¹ triple superphosphate, and 217 kg ha-¹ urea; organic, with the application of 1.0 Mg ha-¹ thermophosphate, 2.0 Mg ha-¹ termopotassium, and 7.0 Mg ha-¹ chicken manure; and control, without fertilizers. Soil fertility, dry mass production, and legume content in the pasture were evaluated. The experiment with green manure resulted in a significant increase in the soilextractable contents of P and K and in pasture productivity. In the organic treatment, due to the slow release of agromineral nutrients, long-term effects are observed on the soil-extractable contents of P and K.
RESUMO - O objetivo deste trabalho foi avaliar o desempenho dos agrominerais termopotássio e termofosfato, como fontes de P e K, em consórcio de pastagem orgânica de Urochloa brizantha 'Marandu' + Stylosanthes spp. no Cerrado brasileiro. O manejo orgânico foi comparado ao convencional com uso de fertilizantes químicos,... Mostrar Tudo |
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Thesagro: |
Adubo Verde; Cloreto de Potássio; Crotalária Juncea; Fertilizante; Forragem; Gramínea; Leguminosa; Pastagem Consorciada; Potássio. |
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Thesaurus NAL: |
Forage grasses; Forage legumes; Organic fertilizers; Potassium; Stylosanthes; Urochloa brizantha. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/225673/1/Pasture-organic-management-2021.pdf
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Marc: |
LEADER 03705naa a2200433 a 4500
001 2134020
005 2024-02-07
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi. org/10.1590/S1678-3921.pab2021.v56.01469$2DOI
100 1 $aSOARES, J. P. G.
245 $aPasture organic management using thermopotassium and thermophosphate in the Cerrado region.$h[electronic resource]
260 $c2021
500 $aTítulo em português: Manejo orgânico de pastagens com uso de termopotássio e termofosfato na região do Cerrado.
520 $aABSTRACT - The objective of this work was to evaluate the performance of the thermopotassium and thermophosphate agrominerals, as sources of P and K, in an organic pasture consortium of 'Marandu' Urochloa brizantha + Stylosanthes spp. in the Brazilian Cerrado. The organic management was compared with conventional farming using chemical fertilizers, during three years, in two adjacent experiments, one with and the other without previous growth of green manure (Crotalaria juncea). The management treatments were: conventional, with the application of 200 kg ha-¹ potassium chloride, 260 kg ha-¹ triple superphosphate, and 217 kg ha-¹ urea; organic, with the application of 1.0 Mg ha-¹ thermophosphate, 2.0 Mg ha-¹ termopotassium, and 7.0 Mg ha-¹ chicken manure; and control, without fertilizers. Soil fertility, dry mass production, and legume content in the pasture were evaluated. The experiment with green manure resulted in a significant increase in the soilextractable contents of P and K and in pasture productivity. In the organic treatment, due to the slow release of agromineral nutrients, long-term effects are observed on the soil-extractable contents of P and K. RESUMO - O objetivo deste trabalho foi avaliar o desempenho dos agrominerais termopotássio e termofosfato, como fontes de P e K, em consórcio de pastagem orgânica de Urochloa brizantha 'Marandu' + Stylosanthes spp. no Cerrado brasileiro. O manejo orgânico foi comparado ao convencional com uso de fertilizantes químicos, durante três anos, em dois experimentos adjacentes, um com e outro sem cultivo prévio de adubo verde (Crotalaria juncea). Os tratamentos de manejo foram: convencional, com aplicação de 200 kg ha-¹ de cloreto de potássio, 260 kg ha-¹ de superfosfato triplo e 217 kg ha-¹ de ureia; orgânico, com aplicação de 1,0 Mg ha-¹ termopotássio, 2,0 Mg ha-¹ termofosfato e 7,0 Mg ha-¹ cama de frango; e controle, sem adubação. Foram avaliadas fertilidade do solo, produção de matéria seca e contribuição da leguminosa na pastagem. O experimento com adubação verde proporcionou aumento significativo nos teores de P e K extraíveis do solo e na produtividade da pastagem. No tratamento orgânico, devido à liberação lenta dos nutrientes dos agrominerais, são observados efeitos de longo prazo nos teores extraíveis de P e K do solo.
650 $aForage grasses
650 $aForage legumes
650 $aOrganic fertilizers
650 $aPotassium
650 $aStylosanthes
650 $aUrochloa brizantha
650 $aAdubo Verde
650 $aCloreto de Potássio
650 $aCrotalária Juncea
650 $aFertilizante
650 $aForragem
650 $aGramínea
650 $aLeguminosa
650 $aPastagem Consorciada
650 $aPotássio
700 1 $aRAMOS, A. K. B.
700 1 $aBRAGA, G. J.
700 1 $aMARCHI, G.
700 1 $aOLIVEIRA, E. R.
700 1 $aGANDRA, J. R.
700 1 $aFERNANDES, F. D.
700 1 $aOLIVEIRA, A. D. de
700 1 $aMALAQUIAS, J. V.
700 1 $aMARTINS, E. de S.
773 $tPesquisa Agropecuária Brasileira$gv.56, e01469, 2021.
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