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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
11/07/1996 |
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Data da última atualização: |
09/04/2018 |
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Autoria: |
INSTITUTO DE PESQUISAS TECNOLÓGICAS (SP). |
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Título: |
Madeiras. |
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Ano de publicação: |
1972 |
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Fonte/Imprenta: |
São Paulo, 1972. |
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Páginas: |
20 p. |
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Descrição Física: |
il. |
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Idioma: |
Português |
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Palavras-Chave: |
Anatomy; Derivado; Derivative; Use; Uso. |
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Thesagro: |
Anatomia; Inventário Florestal; Madeira; Química. |
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Thesaurus Nal: |
chemistry; forest inventory; wood. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00575nam a2200253 a 4500
001 1374035
005 2018-04-09
008 1972 bl uuuu u0uu1 u #d
100 1 $aINSTITUTO DE PESQUISAS TECNOLÓGICAS (SP).
245 $aMadeiras.
260 $aSão Paulo$c1972
300 $a20 p.$cil.
650 $achemistry
650 $aforest inventory
650 $awood
650 $aAnatomia
650 $aInventário Florestal
650 $aMadeira
650 $aQuímica
653 $aAnatomy
653 $aDerivado
653 $aDerivative
653 $aUse
653 $aUso
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Cerrados. Para informações adicionais entre em contato com cpac.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
13/01/1999 |
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Data da última atualização: |
13/01/1999 |
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Autoria: |
WESTERHOF, R.; VILELA, L.; AYARZA, M.; ZECH, W. |
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Título: |
Land use effects on labile N extracted with permanganate and the nitrogen management index in the cerrado region of Brazil. |
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Ano de publicação: |
1998 |
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Fonte/Imprenta: |
Biology and Fertility of Soils, Berlin, v.27, p.353-357, 1998. |
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Idioma: |
Inglês |
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Conteúdo: |
The effect of and use on the availability of nitrogen (N) was studied by separating total N into a labile and a stable fraction by oxidation and extraction of labile N with KMnO4. The nitrogen management index (NMI) was calculated following the method of Blair et al. (1995) for the carbon management index. In all systems, labile N released by KMnO4 was a better indicator of N availability than total and stable N. The NMI was a good indicator of N availability but gave no information about the total amount of N. In land use system analysis, total N and labile N can used together as a simple and rapid way to evaluate the N status of the soil. Legume-based pastures specifically increased the amount of labile N. Although soybeans had a dominant role in the continuos cropping system studied, the total N contents of these systems were lower than those of the natural Cerrado. The availability of N under legume-based pastures and legume-based pasture-crop rotations was higher than under the natural Cerrado and the continuous cropping systems. |
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Thesagro: |
Cerrado; Mineralização; Nitrogênio; Uso da Terra. |
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Thesaurus NAL: |
land use; mineralization; nitrogen. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01732naa a2200241 a 4500
001 1544522
005 1999-01-13
008 1998 bl --- 0-- u #d
100 1 $aWESTERHOF, R.
245 $aLand use effects on labile N extracted with permanganate and the nitrogen management index in the cerrado region of Brazil.
260 $c1998
520 $aThe effect of and use on the availability of nitrogen (N) was studied by separating total N into a labile and a stable fraction by oxidation and extraction of labile N with KMnO4. The nitrogen management index (NMI) was calculated following the method of Blair et al. (1995) for the carbon management index. In all systems, labile N released by KMnO4 was a better indicator of N availability than total and stable N. The NMI was a good indicator of N availability but gave no information about the total amount of N. In land use system analysis, total N and labile N can used together as a simple and rapid way to evaluate the N status of the soil. Legume-based pastures specifically increased the amount of labile N. Although soybeans had a dominant role in the continuos cropping system studied, the total N contents of these systems were lower than those of the natural Cerrado. The availability of N under legume-based pastures and legume-based pasture-crop rotations was higher than under the natural Cerrado and the continuous cropping systems.
650 $aland use
650 $amineralization
650 $anitrogen
650 $aCerrado
650 $aMineralização
650 $aNitrogênio
650 $aUso da Terra
700 1 $aVILELA, L.
700 1 $aAYARZA, M.
700 1 $aZECH, W.
773 $tBiology and Fertility of Soils, Berlin$gv.27, p.353-357, 1998.
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