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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia; Embrapa Milho e Sorgo; Embrapa Semiárido. |
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Data corrente: |
18/02/1993 |
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Data da última atualização: |
27/06/1995 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
DOBEREINER, J.; MARRIEL, I. E.; NERY, M. |
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Título: |
Ecological distribution of Spirillum lipoferum Beijerinck. |
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Ano de publicação: |
1976 |
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Fonte/Imprenta: |
Can. J. Microbiol., v.22, n.10, p.1464-1473, 1976. |
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Idioma: |
Inglês |
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Conteúdo: |
A survey in various countries revealed that the N2-fixing Spirillum lipoferum Beijerinck is a very common root and soil inhabitant in the tropics. More than half of the grass root and soil samples collected in tropical countries (four African countries and Brazil) contained abundant S.lipoferum populations, while less tahn 10% of the sample collected in tempearte South Brazil, Kenya, and the U.S.A. Contained the organism. There is a pronounced vegetation effect. Panicum maximum seems the most favorable among the forage grasses, while few positive samples were found under virgin tropical forest. Legume roots contained less S. lipoferum thanadjancent soils. More than 80% of the samples from cereal roots (maize, sorghum, wheat, and rye) grown in fields fertilized with PK and Mo, in Rio de Janeiro State, were positive. maize and sorghum grown under similar conditions in Wisconsin contained less than 10% of positive samples, but when maize fields were inoculated 90% of the root samples contained S. lipoferum. Alluvial soils were more favorable than eroded hill soils. Occurrence in soil was strongly pH-dependent with a pH around 7, being optimal (correlation coefficient r = 0,90). Sporadic occurrence was observed even in soils with pH 4.8. surface-sterilized P. maximum roots collected from soils with pH ranging from 4.8 to 7.2 contained high S. lipoferum numbers which did not correlate with soil pH (r =0,41). Amendment with malate of acid soils was not very effective in increasing nitrogenase (...) MenosA survey in various countries revealed that the N2-fixing Spirillum lipoferum Beijerinck is a very common root and soil inhabitant in the tropics. More than half of the grass root and soil samples collected in tropical countries (four African countries and Brazil) contained abundant S.lipoferum populations, while less tahn 10% of the sample collected in tempearte South Brazil, Kenya, and the U.S.A. Contained the organism. There is a pronounced vegetation effect. Panicum maximum seems the most favorable among the forage grasses, while few positive samples were found under virgin tropical forest. Legume roots contained less S. lipoferum thanadjancent soils. More than 80% of the samples from cereal roots (maize, sorghum, wheat, and rye) grown in fields fertilized with PK and Mo, in Rio de Janeiro State, were positive. maize and sorghum grown under similar conditions in Wisconsin contained less than 10% of positive samples, but when maize fields were inoculated 90% of the root samples contained S. lipoferum. Alluvial soils were more favorable than eroded hill soils. Occurrence in soil was strongly pH-dependent with a pH around 7, being optimal (correlation coefficient r = 0,90). Sporadic occurrence was observed even in soils with pH 4.8. surface-sterilized P. maximum roots collected from soils with pH ranging from 4.8 to 7.2 contained high S. lipoferum numbers which did not correlate with soil pH (r =0,41). Amendment with malate of acid soils was not very effective in increasing... Mostrar Tudo |
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Palavras-Chave: |
CNPAB; Fixation of N2; Grass. |
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Thesagro: |
Legume; Microbiologia do solo; Solo. |
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Thesaurus Nal: |
Azospirillum; Microbiology; Soil. |
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Categoria do assunto: |
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P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02142naa a2200253 a 4500
001 1599153
005 1995-06-27
008 1976 bl uuuu u00u1 u #d
100 1 $aDOBEREINER, J.
245 $aEcological distribution of Spirillum lipoferum Beijerinck.
260 $c1976
520 $aA survey in various countries revealed that the N2-fixing Spirillum lipoferum Beijerinck is a very common root and soil inhabitant in the tropics. More than half of the grass root and soil samples collected in tropical countries (four African countries and Brazil) contained abundant S.lipoferum populations, while less tahn 10% of the sample collected in tempearte South Brazil, Kenya, and the U.S.A. Contained the organism. There is a pronounced vegetation effect. Panicum maximum seems the most favorable among the forage grasses, while few positive samples were found under virgin tropical forest. Legume roots contained less S. lipoferum thanadjancent soils. More than 80% of the samples from cereal roots (maize, sorghum, wheat, and rye) grown in fields fertilized with PK and Mo, in Rio de Janeiro State, were positive. maize and sorghum grown under similar conditions in Wisconsin contained less than 10% of positive samples, but when maize fields were inoculated 90% of the root samples contained S. lipoferum. Alluvial soils were more favorable than eroded hill soils. Occurrence in soil was strongly pH-dependent with a pH around 7, being optimal (correlation coefficient r = 0,90). Sporadic occurrence was observed even in soils with pH 4.8. surface-sterilized P. maximum roots collected from soils with pH ranging from 4.8 to 7.2 contained high S. lipoferum numbers which did not correlate with soil pH (r =0,41). Amendment with malate of acid soils was not very effective in increasing nitrogenase (...)
650 $aAzospirillum
650 $aMicrobiology
650 $aSoil
650 $aLegume
650 $aMicrobiologia do solo
650 $aSolo
653 $aCNPAB
653 $aFixation of N2
653 $aGrass
700 1 $aMARRIEL, I. E.
700 1 $aNERY, M.
773 $tCan. J. Microbiol.$gv.22, n.10, p.1464-1473, 1976.
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Registro original: |
Embrapa Agrobiologia (CNPAB) |
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| 2. |  | LAGO, A. A. do; VILELLA, O. V.; MAEDA, J. A.; RAZERA, L. F.; TISSELLI FILHO, O.; MARCHI, L. de O. S. Época de Colheita e Qualidade das Sementes da Cultivar de Arroz Irrigado 'IAC-444'. Pesquisa Agropecuaria Brasileira, Brasilia, v.26, n.2, p.263-268, fev.1991| Biblioteca(s): Embrapa Unidades Centrais. |
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| Registros recuperados : 2 | |
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