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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
14/07/1995 |
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Data da última atualização: |
14/07/1995 |
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Autoria: |
PANZANI, C. R.; PRATES, H. S.; GREVE, A. |
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Afiliação: |
CATI, Avenida Brasil, 2340 13073-001 Campinas (SP). |
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Título: |
Sistema de producao de muda certificada de citros no Estado de Sao Paulo |
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Ano de publicação: |
1994 |
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Fonte/Imprenta: |
Laranja, v.15, n.1, p.173-199, 1994 |
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ISSN: |
0102-1907 |
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Idioma: |
Português |
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Conteúdo: |
Considerando a necessidade de colocar, a disposicao dos produtores de mudas, material de propagacao com garantia de origem e sanidade, bem como de oferecer, aos produtores rurais, mudas com elevado padrao agronomico e sanitario, a Secretaria de Agricultura e Abastecimento (SAA), a traves da Resolucao SAA de 6 de junho de 1994, implantou o Sistema de Producao de Mudas Certificadas, cabendo a Coordenadoria de Assistencia Tecnica Integral (CATI), por seu Departamento de Sementes, Mudas e Matrizes (DSMM), que e a Entidade Certificadora no Estado de Sao Paulo, estabelecer as normas especificas para cada especie. |
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Palavras-Chave: |
Mude certificado; Propagacao; Vireiro. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01112naa a2200193 a 4500
001 1633713
005 1995-07-14
008 1994 bl uuuu u00u1 u #d
022 $a0102-1907
100 1 $aPANZANI, C. R.
245 $aSistema de producao de muda certificada de citros no Estado de Sao Paulo
260 $c1994
520 $aConsiderando a necessidade de colocar, a disposicao dos produtores de mudas, material de propagacao com garantia de origem e sanidade, bem como de oferecer, aos produtores rurais, mudas com elevado padrao agronomico e sanitario, a Secretaria de Agricultura e Abastecimento (SAA), a traves da Resolucao SAA de 6 de junho de 1994, implantou o Sistema de Producao de Mudas Certificadas, cabendo a Coordenadoria de Assistencia Tecnica Integral (CATI), por seu Departamento de Sementes, Mudas e Matrizes (DSMM), que e a Entidade Certificadora no Estado de Sao Paulo, estabelecer as normas especificas para cada especie.
653 $aMude certificado
653 $aPropagacao
653 $aVireiro
700 1 $aPRATES, H. S.
700 1 $aGREVE, A.
773 $tLaranja$gv.15, n.1, p.173-199, 1994
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
24/07/2017 |
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Data da última atualização: |
04/12/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
TONUCCI, R. G.; NAIR, V. D.; NAIR, P. K. R.; GARCIA. R. |
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Afiliação: |
RAFAEL GONCALVES TONUCCI, CNPC; Vimala D. Nair, Soil and Water Sciences Department, University of Florida, Gainesville, FL, USA; P. K. Ramachandran Nair, Soil and Water Sciences Department, University of Florida, Gainesville, FL, USA; Rasmo Garcia, Animal Science Department Federal University of Viçosa (UFV) - Viçosa, MG, Brazil. |
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Título: |
Grass vs. tree origin of soil organic carbon under different land-use systems in the Brazilian Cerrado. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Plant and Soil, v. 416, p. 1-12, 2017. Online first 21 July 2017. |
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DOI: |
10.1007/s11104-017-3347-1 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Background and Aims: Silvopastoral management of tree plantations is becoming popular in Brazil. The impact of this practice on carbon dynamics of these soils is unknown, and predicting it is difficult because historical land-use records of the region do not exist. The objective of the study was to quantify the relative soil organic carbon (SOC) contributions of C3 and C4 plants in different land-use system. Methods - We evaluated total delta13C, the contribution of C4 and C3-derived soil organic C in three fraction-size classes of soils in six land-use systems (Eucalyptus hybrid plantations established in 1985 and 2005; a native forest; silvopasture stands of Brachiaria brizantha under eucalyptus established in 1994 and 2004; and an open pasture), and undertook carbon dating (14C) for three of those systems, an Oxisol in Minas Gerais, Brazil. From each system, soil samples were collected from four depths (0-10, 10-20, 20-50, and 50-100 cm); samples were fractionated into 250-2000, 53-250, and <53 µm size classes, and their delta13C determined. Carbon dating (14C analysis) was done for whole soil samples from 0 to 10 cm and 50-100 cm depth classes of three land-use systems. Results - The delta13C values increased (showing increase in C contribution by C4 plants, i.e., grasses) with soil depth at all sites and all size-classes. The older systems showed a higher contribution of C4-derived SOC at all depths. Carbon dating indicated that the area had been cleared about 300 years ago. Conclusions - Silvopastoral and pasture systems can be considered as good carbon sinks. We infer that the study site was grassland with high proportion of C4 plants in the past, not a forest as it is today. MenosAbstract: Background and Aims: Silvopastoral management of tree plantations is becoming popular in Brazil. The impact of this practice on carbon dynamics of these soils is unknown, and predicting it is difficult because historical land-use records of the region do not exist. The objective of the study was to quantify the relative soil organic carbon (SOC) contributions of C3 and C4 plants in different land-use system. Methods - We evaluated total delta13C, the contribution of C4 and C3-derived soil organic C in three fraction-size classes of soils in six land-use systems (Eucalyptus hybrid plantations established in 1985 and 2005; a native forest; silvopasture stands of Brachiaria brizantha under eucalyptus established in 1994 and 2004; and an open pasture), and undertook carbon dating (14C) for three of those systems, an Oxisol in Minas Gerais, Brazil. From each system, soil samples were collected from four depths (0-10, 10-20, 20-50, and 50-100 cm); samples were fractionated into 250-2000, 53-250, and <53 µm size classes, and their delta13C determined. Carbon dating (14C analysis) was done for whole soil samples from 0 to 10 cm and 50-100 cm depth classes of three land-use systems. Results - The delta13C values increased (showing increase in C contribution by C4 plants, i.e., grasses) with soil depth at all sites and all size-classes. The older systems showed a higher contribution of C4-derived SOC at all depths. Carbon dating indicated that the area had been cleared about... Mostrar Tudo |
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Palavras-Chave: |
Agroforestry systems; Carbon dating; Sistema silvopastoril; Sistemas agroflorestais; Soil fractionation; Stable isotope ratio analysis. |
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Thesagro: |
Brachiaria Brizantha; Carbono; Cerrado; Eucalyptus spp; Fracionamento; Matéria orgânica; Solo. |
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Thesaurus NAL: |
Agroforestry; Brazil; Grassland soils; Silvopastoral systems; Soil chemistry. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 02854naa a2200385 a 4500
001 2073043
005 2017-12-04
008 2017 bl uuuu u00u1 u #d
024 7 $a10.1007/s11104-017-3347-1$2DOI
100 1 $aTONUCCI, R. G.
245 $aGrass vs. tree origin of soil organic carbon under different land-use systems in the Brazilian Cerrado.$h[electronic resource]
260 $c2017
520 $aAbstract: Background and Aims: Silvopastoral management of tree plantations is becoming popular in Brazil. The impact of this practice on carbon dynamics of these soils is unknown, and predicting it is difficult because historical land-use records of the region do not exist. The objective of the study was to quantify the relative soil organic carbon (SOC) contributions of C3 and C4 plants in different land-use system. Methods - We evaluated total delta13C, the contribution of C4 and C3-derived soil organic C in three fraction-size classes of soils in six land-use systems (Eucalyptus hybrid plantations established in 1985 and 2005; a native forest; silvopasture stands of Brachiaria brizantha under eucalyptus established in 1994 and 2004; and an open pasture), and undertook carbon dating (14C) for three of those systems, an Oxisol in Minas Gerais, Brazil. From each system, soil samples were collected from four depths (0-10, 10-20, 20-50, and 50-100 cm); samples were fractionated into 250-2000, 53-250, and <53 µm size classes, and their delta13C determined. Carbon dating (14C analysis) was done for whole soil samples from 0 to 10 cm and 50-100 cm depth classes of three land-use systems. Results - The delta13C values increased (showing increase in C contribution by C4 plants, i.e., grasses) with soil depth at all sites and all size-classes. The older systems showed a higher contribution of C4-derived SOC at all depths. Carbon dating indicated that the area had been cleared about 300 years ago. Conclusions - Silvopastoral and pasture systems can be considered as good carbon sinks. We infer that the study site was grassland with high proportion of C4 plants in the past, not a forest as it is today.
650 $aAgroforestry
650 $aBrazil
650 $aGrassland soils
650 $aSilvopastoral systems
650 $aSoil chemistry
650 $aBrachiaria Brizantha
650 $aCarbono
650 $aCerrado
650 $aEucalyptus spp
650 $aFracionamento
650 $aMatéria orgânica
650 $aSolo
653 $aAgroforestry systems
653 $aCarbon dating
653 $aSistema silvopastoril
653 $aSistemas agroflorestais
653 $aSoil fractionation
653 $aStable isotope ratio analysis
700 1 $aNAIR, V. D.
700 1 $aNAIR, P. K. R.
700 1 $aGARCIA. R.
773 $tPlant and Soil$gv. 416, p. 1-12, 2017. Online first 21 July 2017.
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