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Registro Completo |
Biblioteca(s): |
Embrapa Gado de Corte. |
Data corrente: |
13/01/2000 |
Data da última atualização: |
13/01/2000 |
Autoria: |
ZIMMER, A. H.; CORREA, E. S. |
Afiliação: |
EMBRAPA. Centro Nacional de Pesquisa de Gado de Corte (Campo Grande, MS). |
Título: |
A pecuaria nacional, uma pecuaria de pasto? |
Edição: |
2. ed. rev. |
Ano de publicação: |
1999 |
Fonte/Imprenta: |
In: PAULINO, V.T.; FERREIRA, L.G. [Ed.]. Recuperacao de pastagens. Nova Odessa: Instituto de Zootecnia, 1999. |
Páginas: |
p. 3-13. |
Idioma: |
Português |
Notas: |
CNPGC. |
Conteúdo: |
O presente trabalho faz um breve historico sobre os avancos das pastagens no Brasil com as quantidades de sementes produzidas pelas principais forrageiras tropicais cultivadas em areas de pastagens, numero efetivo de rebanhos bovinos, bubalinos, ovinos e caprinos e dados de producao animal em pastagens adubadas ou nao. |
Palavras-Chave: |
Brasil; Brazilian savannas; Production. |
Thesagro: |
Bovino; Cerrado; Ganho de Peso; Historia; Pastagem; Produção. |
Thesaurus Nal: |
Brazil; cattle; history; pastures; weight gain. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01165naa a2200337 a 4500 001 1322246 005 2000-01-13 008 1999 bl uuuu u00u1 u #d 100 1 $aZIMMER, A. H. 245 $aA pecuaria nacional, uma pecuaria de pasto? 250 $a2. ed. rev. 260 $c1999 300 $ap. 3-13. 500 $aCNPGC. 520 $aO presente trabalho faz um breve historico sobre os avancos das pastagens no Brasil com as quantidades de sementes produzidas pelas principais forrageiras tropicais cultivadas em areas de pastagens, numero efetivo de rebanhos bovinos, bubalinos, ovinos e caprinos e dados de producao animal em pastagens adubadas ou nao. 650 $aBrazil 650 $acattle 650 $ahistory 650 $apastures 650 $aweight gain 650 $aBovino 650 $aCerrado 650 $aGanho de Peso 650 $aHistoria 650 $aPastagem 650 $aProdução 653 $aBrasil 653 $aBrazilian savannas 653 $aProduction 700 1 $aCORREA, E. S. 773 $tIn: PAULINO, V.T.; FERREIRA, L.G. [Ed.]. Recuperacao de pastagens. Nova Odessa: Instituto de Zootecnia, 1999.
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Embrapa Gado de Corte (CNPGC) |
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Registro Completo
Biblioteca(s): |
Embrapa Solos. |
Data corrente: |
27/11/2018 |
Data da última atualização: |
17/04/2019 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
RODRIGUES, A. F.; NOVOTNY, E. H.; KNICKER, H.; OLIVEIRA, R. R. de. |
Afiliação: |
ALINE FURTADO RODRIGUES, PUC-RJ; ETELVINO HENRIQUE NOVOTNY, CNPS; HEIKE KNICKER, IRNAS-CSIC SPAIN; ROGÉRIO RIBEIRO DE OLIVEIRA, PUC-RJ. |
Título: |
Humic acid composition and soil fertility of soils near an ancient charcoal kiln: are they similar to Terra Preta de Índios soils? |
Ano de publicação: |
2019 |
Fonte/Imprenta: |
Journal of Soils and Sediments, v. 19, n. 3, p. 1374-1381, Mar. 2019. |
DOI: |
10.1007/s11368-018-2162-5 |
Idioma: |
Inglês |
Conteúdo: |
Purpose Charcoal production during the nineteenth century transformed landscapes in the Brazilian Atlantic Forests in Rio de Janeiro city. These paleo-territories were studied to improve our understanding of how this activity altered soil properties. By comparing their humic acids (HA) with those extracted from a Terra Preta de Índios (TPI) site, we showed that the aging of charcoal in soils alone is sufficient to generate recalcitrant organic material with high cation exchange capacity (CEC). Materials and methods The soils were sampled: at the center of the area affected by the ancient charcoal kiln (center of the kiln-CK), at the dump site (D-local deposition of charcoal residues not used for marketing, downstream of the ancient charcoal kiln), and from the surrounding soil, upstream of the kiln, as a control (natural soil-NS). Elemental analysis and fertility characterization of the soil samples were performed. Solid-state 13C nuclear magnetic resonance (NMR) spectra were obtained from their humic acids (HA). These spectra were compared against HA data on TPI. Results and discussion As shown by solid-state 13C NMR spectroscopy, the soil organic matter (SOM) fraction which is high in charged functional groups (the so-called humic acids-HA) was extracted from areas rich in ancient charcoal and dominated by recalcitrant carboxylated aromatic structures (aged charcoal). This peculiar SOM explains the observed high cation exchange capacity (CEC). It yields a fertile soil with a high resistance against degradation by potential intensive use. Comparable results are described in the literature for SOM of TPI. Conclusions The high structural similarity between the HA from the soils under the paleo-charcoal kilns and from TPI supports the hypothesis that just the natural weathering and biochemical reworking of charcoal in soils, together with ash input, is sufficient to generate fertile and resilient soils with peculiar SOM and properties commonly associated with the high fertility and C sequestration potential of TPI. MenosPurpose Charcoal production during the nineteenth century transformed landscapes in the Brazilian Atlantic Forests in Rio de Janeiro city. These paleo-territories were studied to improve our understanding of how this activity altered soil properties. By comparing their humic acids (HA) with those extracted from a Terra Preta de Índios (TPI) site, we showed that the aging of charcoal in soils alone is sufficient to generate recalcitrant organic material with high cation exchange capacity (CEC). Materials and methods The soils were sampled: at the center of the area affected by the ancient charcoal kiln (center of the kiln-CK), at the dump site (D-local deposition of charcoal residues not used for marketing, downstream of the ancient charcoal kiln), and from the surrounding soil, upstream of the kiln, as a control (natural soil-NS). Elemental analysis and fertility characterization of the soil samples were performed. Solid-state 13C nuclear magnetic resonance (NMR) spectra were obtained from their humic acids (HA). These spectra were compared against HA data on TPI. Results and discussion As shown by solid-state 13C NMR spectroscopy, the soil organic matter (SOM) fraction which is high in charged functional groups (the so-called humic acids-HA) was extracted from areas rich in ancient charcoal and dominated by recalcitrant carboxylated aromatic structures (aged charcoal). This peculiar SOM explains the observed high cation exchange capacity (CEC). It yields a fertile soil with... Mostrar Tudo |
Palavras-Chave: |
Carbono pirogênico; Ressonância magnética nuclear; Solos antrópicos. |
Thesaurus NAL: |
Biochar. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
Marc: |
LEADER 02782naa a2200217 a 4500 001 2100183 005 2019-04-17 008 2019 bl uuuu u00u1 u #d 024 7 $a10.1007/s11368-018-2162-5$2DOI 100 1 $aRODRIGUES, A. F. 245 $aHumic acid composition and soil fertility of soils near an ancient charcoal kiln$bare they similar to Terra Preta de Índios soils?$h[electronic resource] 260 $c2019 520 $aPurpose Charcoal production during the nineteenth century transformed landscapes in the Brazilian Atlantic Forests in Rio de Janeiro city. These paleo-territories were studied to improve our understanding of how this activity altered soil properties. By comparing their humic acids (HA) with those extracted from a Terra Preta de Índios (TPI) site, we showed that the aging of charcoal in soils alone is sufficient to generate recalcitrant organic material with high cation exchange capacity (CEC). Materials and methods The soils were sampled: at the center of the area affected by the ancient charcoal kiln (center of the kiln-CK), at the dump site (D-local deposition of charcoal residues not used for marketing, downstream of the ancient charcoal kiln), and from the surrounding soil, upstream of the kiln, as a control (natural soil-NS). Elemental analysis and fertility characterization of the soil samples were performed. Solid-state 13C nuclear magnetic resonance (NMR) spectra were obtained from their humic acids (HA). These spectra were compared against HA data on TPI. Results and discussion As shown by solid-state 13C NMR spectroscopy, the soil organic matter (SOM) fraction which is high in charged functional groups (the so-called humic acids-HA) was extracted from areas rich in ancient charcoal and dominated by recalcitrant carboxylated aromatic structures (aged charcoal). This peculiar SOM explains the observed high cation exchange capacity (CEC). It yields a fertile soil with a high resistance against degradation by potential intensive use. Comparable results are described in the literature for SOM of TPI. Conclusions The high structural similarity between the HA from the soils under the paleo-charcoal kilns and from TPI supports the hypothesis that just the natural weathering and biochemical reworking of charcoal in soils, together with ash input, is sufficient to generate fertile and resilient soils with peculiar SOM and properties commonly associated with the high fertility and C sequestration potential of TPI. 650 $aBiochar 653 $aCarbono pirogênico 653 $aRessonância magnética nuclear 653 $aSolos antrópicos 700 1 $aNOVOTNY, E. H. 700 1 $aKNICKER, H. 700 1 $aOLIVEIRA, R. R. de 773 $tJournal of Soils and Sediments$gv. 19, n. 3, p. 1374-1381, Mar. 2019.
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