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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
18/11/1998 |
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Data da última atualização: |
18/11/1998 |
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Autoria: |
SOUZA, F. X. de; ALMEIDA, F. C. G.; CORREA, M. P. F.; ALMEIDA, F. A. G. |
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Afiliação: |
CNPAI; UFC; CNPCa. |
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Título: |
Enraizamento de estacas de caule juvenil de cajueiro 'Anao-Precoce' (Anacardium occidentale L.) |
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Ano de publicação: |
1992 |
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Fonte/Imprenta: |
Revista Brasileira de Fruticultura, v.14, n.3, p.59-65, Cruz das Almas, 1992 |
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ISSN: |
0100-2945 |
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Idioma: |
Português |
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Conteúdo: |
Estudou-se o enraizamento de estacas de caule de cajueiro `Anao Precoce' (Anacardium occidentale L.) sob um sistema de nebulizacao intermitente. As estacas tinham 14cm de comprimento, quatro folhas cortadas pela metade e meristema apical. Utilizou-se o delineamento experimental de blocos ao acaso em esquema fatorial (3 x 2), sendo as idades das plantas matrizes e as doses de AIB os fatores, e os substratos casca de arroz carbonizada, po de madeira de aroeira (Schinus therebinthifolius Raddi) curtido, Areia Quartzoza Distrofica e Vertissolo formaram os blocos. As estacas oriundas de plantas de 30 dias de idade tiveram o melhor indice de enraizamento (62,5%). A juvenilidade e a manutencao das folhas favoreceram o enraizamento. A emissao de folhas pela estaca e um forte indicativo do seu potencial de enraizamento. |
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Palavras-Chave: |
Anacardim occidentale L; Anacardium occidentale L; Asexual; Cuttings; Estaquia; Juvenilidade; Progagation growth regulators; Propagacao assexual. |
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Thesagro: |
Regulador de Crescimento. |
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Thesaurus Nal: |
juvenility. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01680naa a2200289 a 4500
001 1635184
005 1998-11-18
008 1992 bl uuuu u00u1 u #d
022 $a0100-2945
100 1 $aSOUZA, F. X. de
245 $aEnraizamento de estacas de caule juvenil de cajueiro 'Anao-Precoce' (Anacardium occidentale L.)
260 $c1992
520 $aEstudou-se o enraizamento de estacas de caule de cajueiro `Anao Precoce' (Anacardium occidentale L.) sob um sistema de nebulizacao intermitente. As estacas tinham 14cm de comprimento, quatro folhas cortadas pela metade e meristema apical. Utilizou-se o delineamento experimental de blocos ao acaso em esquema fatorial (3 x 2), sendo as idades das plantas matrizes e as doses de AIB os fatores, e os substratos casca de arroz carbonizada, po de madeira de aroeira (Schinus therebinthifolius Raddi) curtido, Areia Quartzoza Distrofica e Vertissolo formaram os blocos. As estacas oriundas de plantas de 30 dias de idade tiveram o melhor indice de enraizamento (62,5%). A juvenilidade e a manutencao das folhas favoreceram o enraizamento. A emissao de folhas pela estaca e um forte indicativo do seu potencial de enraizamento.
650 $ajuvenility
650 $aRegulador de Crescimento
653 $aAnacardim occidentale L
653 $aAnacardium occidentale L
653 $aAsexual
653 $aCuttings
653 $aEstaquia
653 $aJuvenilidade
653 $aProgagation growth regulators
653 $aPropagacao assexual
700 1 $aALMEIDA, F. C. G.
700 1 $aCORREA, M. P. F.
700 1 $aALMEIDA, F. A. G.
773 $tRevista Brasileira de Fruticultura$gv.14, n.3, p.59-65, Cruz das Almas, 1992
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Embrapa Mandioca e Fruticultura (CNPMF) |
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Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
09/03/2022 |
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Data da última atualização: |
09/03/2022 |
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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: |
RAMALHO, B.; DIECKOW, J.; MELO, V. de F.; BROWN, G. G.; SIMON, P. L.; IBARR, M. A.; CUNHA, L.; KILLE, P.; TPI NETWORK. |
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Afiliação: |
BRUNA RAMALHO, UFPR; JEFERSON DIECKOW, UFPR; VANDER DE FREITAS MELO, UFPR; GEORGE GARDNER BROWN, CNPF; PRISCILA LUZIA SIMON, UFPR; MARIANA ALVES IBARR, UFPR; LUIS CUNHA, University of Coimbra; PETER KILLE, Cardiff University; TPI NETWORK, Cardiff University. |
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Título: |
Carbon and nitrogen storage and stability by mineral-organic association in physical fractions of anthropogenic dark earth and of reference soils in Amazonia. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Catena, v. 213, 106185, June 2022. 10 p. |
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DOI: |
https://doi.org/10.1016/j.catena.2022.106185 |
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Idioma: |
Inglês |
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Conteúdo: |
The anthropogenic dark earths (ADEs) are being assumed in recent years as a model representing the result of sustainable soil management practices carried out by Pre-Columbian peoples. However, little is known about the role of mineral-organic associations in organic matter storage in those soils compared to the emphasis generally given to the role of pyrogenic structures. We quantified the changes of carbon and nitrogen and their distribution in physical fractions of ADEs in relation to the reference (adjacent) soil. Four ADEs sites having the different soil textural classes of sandy clay loam, sandy clay, clayey, and very clayey were selected in the Amazon region of Brazil. Soil samples were collected from the 0?10 cm layer and a subset of the sample was separated into large aggregates (>500 micrômetro) and small aggregates (<500 micrômetro). The ADEs stored on average 45% more total organic carbon (TOC) and 44% more total nitrogen (TN) than the reference soils. Of the incremental TOC and TN in ADE relative to the reference soil, the silt size fraction stored on average 92% of this TOC and 37% of this TN and had C:N ratios as high as 25, which may indicate the presence of pyrogenic material. The clay fraction stored a substantial share of 27-46% of the incremental TOC and 27-66% of the incremental TN. The C:N ratio in the clay size fraction of ADEs, on average 10.5, was lower or not different than in the clay fraction of reference soil (average of 11.1), indicating that the organic matter in the clay fraction even of ADEs was predominantly of microbial origin, and not pyrogenic. We therefore conclude that the clay fraction proved to be an important location to the accumulation and stabilization of TOC and TN in these Anthrosols, possibly by mineral-organic association mechanisms. MenosThe anthropogenic dark earths (ADEs) are being assumed in recent years as a model representing the result of sustainable soil management practices carried out by Pre-Columbian peoples. However, little is known about the role of mineral-organic associations in organic matter storage in those soils compared to the emphasis generally given to the role of pyrogenic structures. We quantified the changes of carbon and nitrogen and their distribution in physical fractions of ADEs in relation to the reference (adjacent) soil. Four ADEs sites having the different soil textural classes of sandy clay loam, sandy clay, clayey, and very clayey were selected in the Amazon region of Brazil. Soil samples were collected from the 0?10 cm layer and a subset of the sample was separated into large aggregates (>500 micrômetro) and small aggregates (<500 micrômetro). The ADEs stored on average 45% more total organic carbon (TOC) and 44% more total nitrogen (TN) than the reference soils. Of the incremental TOC and TN in ADE relative to the reference soil, the silt size fraction stored on average 92% of this TOC and 37% of this TN and had C:N ratios as high as 25, which may indicate the presence of pyrogenic material. The clay fraction stored a substantial share of 27-46% of the incremental TOC and 27-66% of the incremental TN. The C:N ratio in the clay size fraction of ADEs, on average 10.5, was lower or not different than in the clay fraction of reference soil (average of 11.1), indicating that th... Mostrar Tudo |
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Palavras-Chave: |
Physical fractionation; Protection mechanisms. |
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Thesaurus NAL: |
Anthrosols; Clay fraction; Organic matter. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02718naa a2200289 a 4500
001 2140681
005 2022-03-09
008 2022 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.catena.2022.106185$2DOI
100 1 $aRAMALHO, B.
245 $aCarbon and nitrogen storage and stability by mineral-organic association in physical fractions of anthropogenic dark earth and of reference soils in Amazonia.$h[electronic resource]
260 $c2022
520 $aThe anthropogenic dark earths (ADEs) are being assumed in recent years as a model representing the result of sustainable soil management practices carried out by Pre-Columbian peoples. However, little is known about the role of mineral-organic associations in organic matter storage in those soils compared to the emphasis generally given to the role of pyrogenic structures. We quantified the changes of carbon and nitrogen and their distribution in physical fractions of ADEs in relation to the reference (adjacent) soil. Four ADEs sites having the different soil textural classes of sandy clay loam, sandy clay, clayey, and very clayey were selected in the Amazon region of Brazil. Soil samples were collected from the 0?10 cm layer and a subset of the sample was separated into large aggregates (>500 micrômetro) and small aggregates (<500 micrômetro). The ADEs stored on average 45% more total organic carbon (TOC) and 44% more total nitrogen (TN) than the reference soils. Of the incremental TOC and TN in ADE relative to the reference soil, the silt size fraction stored on average 92% of this TOC and 37% of this TN and had C:N ratios as high as 25, which may indicate the presence of pyrogenic material. The clay fraction stored a substantial share of 27-46% of the incremental TOC and 27-66% of the incremental TN. The C:N ratio in the clay size fraction of ADEs, on average 10.5, was lower or not different than in the clay fraction of reference soil (average of 11.1), indicating that the organic matter in the clay fraction even of ADEs was predominantly of microbial origin, and not pyrogenic. We therefore conclude that the clay fraction proved to be an important location to the accumulation and stabilization of TOC and TN in these Anthrosols, possibly by mineral-organic association mechanisms.
650 $aAnthrosols
650 $aClay fraction
650 $aOrganic matter
653 $aPhysical fractionation
653 $aProtection mechanisms
700 1 $aDIECKOW, J.
700 1 $aMELO, V. de F.
700 1 $aBROWN, G. G.
700 1 $aSIMON, P. L.
700 1 $aIBARR, M. A.
700 1 $aCUNHA, L.
700 1 $aKILLE, P.
700 1 $aTPI NETWORK
773 $tCatena$gv. 213, 106185, June 2022. 10 p.
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