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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia; Embrapa Pantanal. |
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Data corrente: |
27/06/1995 |
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Data da última atualização: |
27/06/1995 |
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Autoria: |
BIRCH, H. F. |
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Título: |
Mineralisation of plant nitrogen following alternate wet and dry conditions. |
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Ano de publicação: |
1964 |
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Fonte/Imprenta: |
Plant Soil, v.20, n.1, p.43-49, 1964. |
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Idioma: |
Inglês
Português |
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Conteúdo: |
Nitrogen mineralisation during the decomposition of plant samples containing from 1.0 to 2.9 per cent nitrogen was studied under uninterrupted moist conditions of 21, 27 and 33 days and for the same periods interrupted by 1, 2, and 3 dryings. Thus after 15 days moist the samples were air dried for 3 weeks, moistened, and kept moist for a further 6 days, i.e. a 21 days moist period interrupted by one drying. Repetition of this treatment once and twice gives the 27 and 33 moist periods interrupted by two and three dryings respectively. It was found that intermittent drying echangead the amount of nitrogen mineralised and that the effects was cumulative with increasing numbers of the drying cycles outlined above. Further, the more decomposed the material subjected to drying, the greater was the effect. Plant material contaning as little as 1.5 per cent nitrogen relased mineral nitrogen after 33 days decomposition interrupted by three drying cycles but not during uninterrupted decomposition. With material containing 2 per cent nitrogen a single drying cycle was sufficient to bring about a release of nitrogen which did not occur under more prolonged uninterrupted moist conditions. With samples containing 2.5 per cent nitrogen and over mineral nitrogen was produced during uninterrupted decomposition periods of 21, 27 and 33 days. For the same moist periods interrupted by one or more drying cycles the amount of mineral nitrogen produced was much greater. It is concluded that where pronounced and frequent wet and dry periods occur the addition of plant material of nitrogen content down to 1.5 per cent will be more effective in supplying mineral nitrogen than under constant moist conditions. Immobilisation of soil mineral nitrogen will be reduced or gains increased. The detrimental effect of adding low nitrogen residues to the soil will therefore be less pronounced under alternate wet and dry than constant moist conditions. MenosNitrogen mineralisation during the decomposition of plant samples containing from 1.0 to 2.9 per cent nitrogen was studied under uninterrupted moist conditions of 21, 27 and 33 days and for the same periods interrupted by 1, 2, and 3 dryings. Thus after 15 days moist the samples were air dried for 3 weeks, moistened, and kept moist for a further 6 days, i.e. a 21 days moist period interrupted by one drying. Repetition of this treatment once and twice gives the 27 and 33 moist periods interrupted by two and three dryings respectively. It was found that intermittent drying echangead the amount of nitrogen mineralised and that the effects was cumulative with increasing numbers of the drying cycles outlined above. Further, the more decomposed the material subjected to drying, the greater was the effect. Plant material contaning as little as 1.5 per cent nitrogen relased mineral nitrogen after 33 days decomposition interrupted by three drying cycles but not during uninterrupted decomposition. With material containing 2 per cent nitrogen a single drying cycle was sufficient to bring about a release of nitrogen which did not occur under more prolonged uninterrupted moist conditions. With samples containing 2.5 per cent nitrogen and over mineral nitrogen was produced during uninterrupted decomposition periods of 21, 27 and 33 days. For the same moist periods interrupted by one or more drying cycles the amount of mineral nitrogen produced was much greater. It is concluded that where ... Mostrar Tudo |
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Palavras-Chave: |
AGUA NO SOLO; Mineralisation; Nitrogenio organico; Organic nitrogen; PCO2; Plant; PO2. |
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Thesagro: |
Agronomia; Húmus; Matéria Orgânica; Mineralização; Nitrogênio; Planta. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02646naa a2200277 a 4500
001 1605421
005 1995-06-27
008 1964 bl --- 0-- u #d
100 1 $aBIRCH, H. F.
245 $aMineralisation of plant nitrogen following alternate wet and dry conditions.
260 $c1964
520 $aNitrogen mineralisation during the decomposition of plant samples containing from 1.0 to 2.9 per cent nitrogen was studied under uninterrupted moist conditions of 21, 27 and 33 days and for the same periods interrupted by 1, 2, and 3 dryings. Thus after 15 days moist the samples were air dried for 3 weeks, moistened, and kept moist for a further 6 days, i.e. a 21 days moist period interrupted by one drying. Repetition of this treatment once and twice gives the 27 and 33 moist periods interrupted by two and three dryings respectively. It was found that intermittent drying echangead the amount of nitrogen mineralised and that the effects was cumulative with increasing numbers of the drying cycles outlined above. Further, the more decomposed the material subjected to drying, the greater was the effect. Plant material contaning as little as 1.5 per cent nitrogen relased mineral nitrogen after 33 days decomposition interrupted by three drying cycles but not during uninterrupted decomposition. With material containing 2 per cent nitrogen a single drying cycle was sufficient to bring about a release of nitrogen which did not occur under more prolonged uninterrupted moist conditions. With samples containing 2.5 per cent nitrogen and over mineral nitrogen was produced during uninterrupted decomposition periods of 21, 27 and 33 days. For the same moist periods interrupted by one or more drying cycles the amount of mineral nitrogen produced was much greater. It is concluded that where pronounced and frequent wet and dry periods occur the addition of plant material of nitrogen content down to 1.5 per cent will be more effective in supplying mineral nitrogen than under constant moist conditions. Immobilisation of soil mineral nitrogen will be reduced or gains increased. The detrimental effect of adding low nitrogen residues to the soil will therefore be less pronounced under alternate wet and dry than constant moist conditions.
650 $aAgronomia
650 $aHúmus
650 $aMatéria Orgânica
650 $aMineralização
650 $aNitrogênio
650 $aPlanta
653 $aAGUA NO SOLO
653 $aMineralisation
653 $aNitrogenio organico
653 $aOrganic nitrogen
653 $aPCO2
653 $aPlant
653 $aPO2
773 $tPlant Soil$gv.20, n.1, p.43-49, 1964.
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Registro original: |
Embrapa Agrobiologia (CNPAB) |
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Biblioteca |
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Origem |
Tipo/Formato |
Classificação |
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Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
26/03/2012 |
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Data da última atualização: |
26/03/2012 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
NUNES, M. R.; VIEIRA, N. E.; MELLO FILHO, O. L.; NEIVA, L. C. S.; NUNES JÚNIOR, J.; TOLEDO, R. M. C. P.; FARIAS NETO, A. L.; MOREIRA, C. T.; BORGES, A. O.; COUTO, M. B.; MONTEIRO, P. M. F. O.; BROGIN, R. L.; MEYER, M. C.; SEII, A. H.; CÂMARA, A. R.; VAZ BISNETA, M. |
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Afiliação: |
M. R. NUNES, Emater-GO; N. E. VIEIRA, CTPA; ODILON LEMOS DE MELLO FILHO, CNPSO; L. C. S. NEIVA, Emater-GO; J. NUNES JÚNIOR, CTPA; R. M. C. P. TOLEDO, Emater-GO; AUSTECLINIO LOPES DE FARIAS NETO, CPAMT; CLAUDETE TEIXEIRA MOREIRA, CPAC; A. O. BORGES, Emater-GO; M. B. COUTO, Emater-GO; P. M. F. O. MONTEIRO, Emater-GO; RODRIGO LUIS BROGIN, CNPSO; MAURICIO CONRADO MEYER, CNPSO; A. H. SEII, CTPA; A. R. CÂMARA, CTPA; M. VAZ BISNETA, Universidade Federal de Goiás. |
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Título: |
Extensão de registro da cultivar de soja BRSGO 7960 para Mato Grosso. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
In: REUNIÃO DE PESQUISA DE SOJA DA REGIÃO CENTRAL DO BRASIL, 32., 2011, São Pedro, SP. Resumos expandidos... Londrina: Embrapa Soja, 2011. p. 282-283. Editado por Adilson de Oliveira Junior, Odilon Ferreira Saraiva, Regina Maria Villas Bôas de Campos Leite. |
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Idioma: |
Português |
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Thesagro: |
Soja; Variedade. |
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Thesaurus NAL: |
Cultivars; Soybeans; Varieties. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/41789/1/nunesp.282-283.pdf
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Marc: |
LEADER 01141naa a2200349 a 4500
001 1920395
005 2012-03-26
008 2011 bl uuuu u00u1 u #d
100 1 $aNUNES, M. R.
245 $aExtensão de registro da cultivar de soja BRSGO 7960 para Mato Grosso.
260 $c2011
650 $aCultivars
650 $aSoybeans
650 $aVarieties
650 $aSoja
650 $aVariedade
700 1 $aVIEIRA, N. E.
700 1 $aMELLO FILHO, O. L.
700 1 $aNEIVA, L. C. S.
700 1 $aNUNES JÚNIOR, J.
700 1 $aTOLEDO, R. M. C. P.
700 1 $aFARIAS NETO, A. L.
700 1 $aMOREIRA, C. T.
700 1 $aBORGES, A. O.
700 1 $aCOUTO, M. B.
700 1 $aMONTEIRO, P. M. F. O.
700 1 $aBROGIN, R. L.
700 1 $aMEYER, M. C.
700 1 $aSEII, A. H.
700 1 $aCÂMARA, A. R.
700 1 $aVAZ BISNETA, M.
773 $tIn: REUNIÃO DE PESQUISA DE SOJA DA REGIÃO CENTRAL DO BRASIL, 32., 2011, São Pedro, SP. Resumos expandidos... Londrina: Embrapa Soja, 2011. p. 282-283. Editado por Adilson de Oliveira Junior, Odilon Ferreira Saraiva, Regina Maria Villas Bôas de Campos Leite.
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