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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
28/07/1995 |
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Data da última atualização: |
28/07/1995 |
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Autoria: |
LINHARES, L. F.; MARTIN, J. P. |
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Título: |
Decomposition in soil of the humic acid-type polymers (Melanins) of Eurotium echinulatum, Aspergillus glaucus Sp. and other fungi. |
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Ano de publicação: |
1978 |
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Fonte/Imprenta: |
Soil Science Society of America Journal, v.42, n.5, p.738-743, 1978. |
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Idioma: |
Inglês |
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Conteúdo: |
Studies were conducted to compare the decomposition rates in soil of 14C-labeled humic acid-type polymers (melanins) of Eurotium echinulatum and Aspergillus glaucus sp. with those of other fungal melanins, soil and peat humic acids, fungal cells, nondialysable culture medium polymers not precipitaded by acid, and other organic residues. Carbon and N contents, COOH groups, and total acidity were also determined for the fungal products. After 12 weeks incubation at 22C the percentages of the added 14C activity envolved as 14CO2 from the acid-precipitable fungal melanis ranged from 4-6% for E. echinulatum, 4-13% for A, glaucus, 6-8% for Hendersonula toruloides and 6 to 50% for Stachybotrys atra. The fungal polymers were almost as resistant to biodegreadation as soil or peat humic acids. The funagal cells and culture medium polymers not precipitated by acid lost from 26-58% of the applied C, which compared with losses of 50-75% for hyaline fungal cells, corn stalks, and wheat straw. The N source and growth conditions did not influence biodegradability. The C contents of the melanis ranged from 51-60%, the N from 1.4-6.8%, COOH groups from 81-385 meq/100 g, and total acidity from 375-876 meq/100 g. |
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Palavras-Chave: |
Decomposition; Fungus; Humic; Humico; Melanins; Polimere; Polymer. |
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Thesagro: |
Decomposição; Fungo; Solo. |
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Thesaurus Nal: |
soil. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01933naa a2200265 a 4500
001 1785108
005 1995-07-28
008 1978 bl --- 0-- u #d
100 1 $aLINHARES, L. F.
245 $aDecomposition in soil of the humic acid-type polymers (Melanins) of Eurotium echinulatum, Aspergillus glaucus Sp. and other fungi.
260 $c1978
520 $aStudies were conducted to compare the decomposition rates in soil of 14C-labeled humic acid-type polymers (melanins) of Eurotium echinulatum and Aspergillus glaucus sp. with those of other fungal melanins, soil and peat humic acids, fungal cells, nondialysable culture medium polymers not precipitaded by acid, and other organic residues. Carbon and N contents, COOH groups, and total acidity were also determined for the fungal products. After 12 weeks incubation at 22C the percentages of the added 14C activity envolved as 14CO2 from the acid-precipitable fungal melanis ranged from 4-6% for E. echinulatum, 4-13% for A, glaucus, 6-8% for Hendersonula toruloides and 6 to 50% for Stachybotrys atra. The fungal polymers were almost as resistant to biodegreadation as soil or peat humic acids. The funagal cells and culture medium polymers not precipitated by acid lost from 26-58% of the applied C, which compared with losses of 50-75% for hyaline fungal cells, corn stalks, and wheat straw. The N source and growth conditions did not influence biodegradability. The C contents of the melanis ranged from 51-60%, the N from 1.4-6.8%, COOH groups from 81-385 meq/100 g, and total acidity from 375-876 meq/100 g.
650 $asoil
650 $aDecomposição
650 $aFungo
650 $aSolo
653 $aDecomposition
653 $aFungus
653 $aHumic
653 $aHumico
653 $aMelanins
653 $aPolimere
653 $aPolymer
700 1 $aMARTIN, J. P.
773 $tSoil Science Society of America Journal$gv.42, n.5, p.738-743, 1978.
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Registro original: |
Embrapa Pantanal (CPAP) |
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| Registros recuperados : 12 | |
| 10. |  | LINHARES, L. F.; SIQUEIRA, K. B.; ALMEIDA, M. F. de; HOTT, M. C.; FONSECA, L. d'A. M. Acordos de livre comércio: uma tendência mundial. Boletim CBLeite, Juiz de Fora, v. 5, n. 13, p. 73-78, 2011.| Tipo: Artigo de Divulgação na Mídia |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 11. | | FRAZÃO, J. J.; BENITES, V. de M.; DAMIN, V.; TEIXEIRA, P. C.; MACEDO, G. M.; LINHARES, L. F. Agronomic efficiency of granulated organomineral fertilizers based on poultry litter and phosphates. In: WORLD FERTILIZER CONGRESS OF CIEC, 16., 2014, Rio de Janeiro. Technological innovation for a sustainable tropical agriculture: proceedings. Rio de Janeiro: CIEC, 2014. p. 259-261.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Solos. |
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| 12. | | LINHARES, L. F.; PONTES JÚNIOR, V. de A.; WENDLAND, A.; SOUZA, T. L. P. O. de; FARIA, L. C. de; PEREIRA, H. S.; MELO, L. C. Interação com ambientes e estabilidade de genótipos para qualidade de grãos em feijoeiro-comum em Goiás e Distrito Federal. In: SEMINÁRIO JOVENS TALENTOS, 8., 2014, Santo Antônio de Goiás. Coletânea dos resumos apresentados. Santo Antônio de Goiás: Embrapa Arroz e Feijão, 2014. p. 69. (Embrapa Arroz e Feijão. Documentos, 306).| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Arroz e Feijão. |
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| Registros recuperados : 12 | |
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