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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
08/12/1992 |
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Data da última atualização: |
06/08/2004 |
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Autoria: |
RUSCHEL, A. P.; FREITAS, J. R. de; VOSE, P. B. |
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Afiliação: |
Centro de Energia Nuclear na Agricultura-CENA. |
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Título: |
Avaliacao da fixacao simbiotica de nitrogenio em soja por marcacao da materia organica do solo. |
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Ano de publicação: |
1982 |
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Fonte/Imprenta: |
In: COLOQUIO REGIONAL SOBRE MATERIA ORGANICA DO SOLO, 1982, Piracicaba. Anais. Piracicaba : CENA, 1982. p.171-173. |
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Idioma: |
Português |
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Notas: |
Editado por Carlos Clemente Cerri; Diva Athie; Decio Sodrzeieski. |
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Conteúdo: |
Foi feita, por diluicao isotopica de 15 N, a avaliacao de fixacao simbiotica de nitrogenio, em soja, utilizando solo marcado com materia organica (20t/ha) enriquecida com 15 N. Observou-se fixacao simbiotica na ordem de 71 a 76% do N da planta nodulada. Plantas nao noduladas absorveram 56-59% do N da materia organica e 40% do solo. As raizes das plantas noduladas apresentavam menor teor de NdN2 que a parte aerea. Discute-se sobre as vantagens da utilizacao da materia organica marcada em comparacao com adicoes de 15 N-fertilizante enriquecido na determinacao de fixacao biologica de N, pelo metodo utilizado. |
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Palavras-Chave: |
Plant; Soybean. |
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Thesagro: |
Fixação de Nitrogênio; Matéria Orgânica; Nodulação; Planta; Soja; Solo. |
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Thesaurus Nal: |
nitrogen fixation; nodulation; organic matter; soil. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01519naa a2200301 a 4500
001 1454539
005 2004-08-06
008 1982 bl uuuu u00u1 u #d
100 1 $aRUSCHEL, A. P.
245 $aAvaliacao da fixacao simbiotica de nitrogenio em soja por marcacao da materia organica do solo.
260 $c1982
500 $aEditado por Carlos Clemente Cerri; Diva Athie; Decio Sodrzeieski.
520 $aFoi feita, por diluicao isotopica de 15 N, a avaliacao de fixacao simbiotica de nitrogenio, em soja, utilizando solo marcado com materia organica (20t/ha) enriquecida com 15 N. Observou-se fixacao simbiotica na ordem de 71 a 76% do N da planta nodulada. Plantas nao noduladas absorveram 56-59% do N da materia organica e 40% do solo. As raizes das plantas noduladas apresentavam menor teor de NdN2 que a parte aerea. Discute-se sobre as vantagens da utilizacao da materia organica marcada em comparacao com adicoes de 15 N-fertilizante enriquecido na determinacao de fixacao biologica de N, pelo metodo utilizado.
650 $anitrogen fixation
650 $anodulation
650 $aorganic matter
650 $asoil
650 $aFixação de Nitrogênio
650 $aMatéria Orgânica
650 $aNodulação
650 $aPlanta
650 $aSoja
650 $aSolo
653 $aPlant
653 $aSoybean
700 1 $aFREITAS, J. R. de
700 1 $aVOSE, P. B.
773 $tIn: COLOQUIO REGIONAL SOBRE MATERIA ORGANICA DO SOLO, 1982, Piracicaba. Anais. Piracicaba : CENA, 1982. p.171-173.
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Registro original: |
Embrapa Soja (CNPSO) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Mandioca e Fruticultura. Para informações adicionais entre em contato com cnpmf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
10/04/2012 |
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Data da última atualização: |
25/05/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
SANTOS, D. C. F.; GRAZZIOTTI, P. H.; SILVA, A. C.; TRINDADE, A. V.; SILVA, E. de B.; COSTA, L. S. da; COSTA, H. A. O. |
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Afiliação: |
DANIELLE CRISTINA FONSECA SANTOS, UFVJM; PAULO HENRIQUE GRAZZIOTTI, UFVJM; ALEXANDRE CHRISTÓFARO SILVA, UFVJM; ALDO VILAR TRINDADE, CNPMF; ENILSON DE BARROS SILVA, UFVJM; LIDIOMAR SOARES DA COSTA, UFVJM; HESMAEL ANTÔNIO ORLANDI COSTA, UFVJM. |
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Título: |
Microbial and soil properties in restoration areas in the Jequitinhonha Valley, Minas Gerais. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Revista Brasileira de Ciência do Solo, v. 35, p. 2199-2206, 2011. |
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ISSN: |
1806-9657 |
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Idioma: |
Inglês |
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Conteúdo: |
To mitigate the impacts of eucalypt monoculture, forestry companies in the Upper Jequitinhonha Valley (MG) have adopted the insertion of strips of native vegetation in-between the commercial plantations. The method used for the creation of these corridors is to allow spontaneous regrowth of native vegetation in areas previously under eucalypt. The objective of this study was to evaluate the effect of cover crops on microbial and soil properties for a detailed description of the restoration process of native vegetation in forest soils of the Jequitinhonha Valley. The treatments were represented by an initial restoration stage (< 4 years) with or without remaining eucalypt and the advanced restoration stage (> 4 years) with or without remaining eucalypt, plus the three controls: commercial eucalypt plantation, Cerrado vegetation and native forest. Soil samples were collected for three consecutive years in the dry and rainy season (August and February, respectively). The microbial activity, regardless of the presence of remaining eucalypt , did not differ among the restoration areas, except for the metabolic quotient (qCO2) in the rainy season of February 2007. At this time, this microbial activity was higher in the advanced restoration stage without eucalypt than initial restoration without eucalypt and advanced restoration with eucalypt. The restoration areas, in general, did not differ from the control: eucalypt plantation and Cerrado either. Compared to the forest, the levels of organic C, microbial C, basal respiration (Rbasal) and hydrolysis of fluorescein diacetate (FDA) in the restoration areas were, in general, lower and did not differ in qCO2 and microbial quotient (qMIC). In general, the soil quality was similar in the initial and advanced restoration stages. Most of the soil and microbial properties in the three years indicated that the restoration areas were most similar to the Cerrado. In the advanced restoration areas without eucalypt compared to Cerrado, the lower Rbasal in the 3rd year and the lower FDA and qMIC and higher qCO2 in the 2nd year indicated that the removal of the remaining eucalypt trees was unfavorable for restoration. MenosTo mitigate the impacts of eucalypt monoculture, forestry companies in the Upper Jequitinhonha Valley (MG) have adopted the insertion of strips of native vegetation in-between the commercial plantations. The method used for the creation of these corridors is to allow spontaneous regrowth of native vegetation in areas previously under eucalypt. The objective of this study was to evaluate the effect of cover crops on microbial and soil properties for a detailed description of the restoration process of native vegetation in forest soils of the Jequitinhonha Valley. The treatments were represented by an initial restoration stage (< 4 years) with or without remaining eucalypt and the advanced restoration stage (> 4 years) with or without remaining eucalypt, plus the three controls: commercial eucalypt plantation, Cerrado vegetation and native forest. Soil samples were collected for three consecutive years in the dry and rainy season (August and February, respectively). The microbial activity, regardless of the presence of remaining eucalypt , did not differ among the restoration areas, except for the metabolic quotient (qCO2) in the rainy season of February 2007. At this time, this microbial activity was higher in the advanced restoration stage without eucalypt than initial restoration without eucalypt and advanced restoration with eucalypt. The restoration areas, in general, did not differ from the control: eucalypt plantation and Cerrado either. Compared to the forest, the l... Mostrar Tudo |
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Palavras-Chave: |
Degraded areas. |
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Thesaurus NAL: |
microbial biomass; soil quality. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02910naa a2200241 a 4500
001 1921927
005 2023-05-25
008 2011 bl uuuu u00u1 u #d
022 $a1806-9657
100 1 $aSANTOS, D. C. F.
245 $aMicrobial and soil properties in restoration areas in the Jequitinhonha Valley, Minas Gerais.$h[electronic resource]
260 $c2011
520 $aTo mitigate the impacts of eucalypt monoculture, forestry companies in the Upper Jequitinhonha Valley (MG) have adopted the insertion of strips of native vegetation in-between the commercial plantations. The method used for the creation of these corridors is to allow spontaneous regrowth of native vegetation in areas previously under eucalypt. The objective of this study was to evaluate the effect of cover crops on microbial and soil properties for a detailed description of the restoration process of native vegetation in forest soils of the Jequitinhonha Valley. The treatments were represented by an initial restoration stage (< 4 years) with or without remaining eucalypt and the advanced restoration stage (> 4 years) with or without remaining eucalypt, plus the three controls: commercial eucalypt plantation, Cerrado vegetation and native forest. Soil samples were collected for three consecutive years in the dry and rainy season (August and February, respectively). The microbial activity, regardless of the presence of remaining eucalypt , did not differ among the restoration areas, except for the metabolic quotient (qCO2) in the rainy season of February 2007. At this time, this microbial activity was higher in the advanced restoration stage without eucalypt than initial restoration without eucalypt and advanced restoration with eucalypt. The restoration areas, in general, did not differ from the control: eucalypt plantation and Cerrado either. Compared to the forest, the levels of organic C, microbial C, basal respiration (Rbasal) and hydrolysis of fluorescein diacetate (FDA) in the restoration areas were, in general, lower and did not differ in qCO2 and microbial quotient (qMIC). In general, the soil quality was similar in the initial and advanced restoration stages. Most of the soil and microbial properties in the three years indicated that the restoration areas were most similar to the Cerrado. In the advanced restoration areas without eucalypt compared to Cerrado, the lower Rbasal in the 3rd year and the lower FDA and qMIC and higher qCO2 in the 2nd year indicated that the removal of the remaining eucalypt trees was unfavorable for restoration.
650 $amicrobial biomass
650 $asoil quality
653 $aDegraded areas
700 1 $aGRAZZIOTTI, P. H.
700 1 $aSILVA, A. C.
700 1 $aTRINDADE, A. V.
700 1 $aSILVA, E. de B.
700 1 $aCOSTA, L. S. da
700 1 $aCOSTA, H. A. O.
773 $tRevista Brasileira de Ciência do Solo$gv. 35, p. 2199-2206, 2011.
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