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Biblioteca(s):  Embrapa Amazônia Ocidental.
Data corrente:  14/01/2015
Data da última atualização:  08/06/2015
Tipo da produção científica:  Artigo em Anais de Congresso
Autoria:  TEIXEIRA, W. G.; STEINER, C.; SWAMI, S. N.; MOREIRA, A.; REIS, A. R.; COSTA, D. G.; CHAVES, F. C. M.; MARTINS, G. C.; SOUZA, G. K. de A.; ARRUDA, M. R.
Título:  The link between Terra Preta de Índio and the use of charcoal to improve soil quality.
Ano de publicação:  2004
Fonte/Imprenta:  Trabalho apresentado no Energy and Agricultural Carbon Utilization: Sustainable alternatives to sequestration, 2004.
Idioma:  Inglês
Conteúdo:  Amazonian Dark Earth ? Terra Preta de Índio. Characterization The Amazonian Dark Earth (ADE) or Terra Preta de Índio shows normally a plaggic, terric or hortic horizons. These horizons are identified by the dark matrix colors of the top layers, and presence of ceramics and charcoal pieces. The more widely accepted theory about the origin of these epipedons is that they were improved by Amerindian populations in Pre Colombian Indian settlements. The tophorizons on ADE sites show some differences on soil chemical, physical and hydraulic properties compared to the adjacent soils in the region. The tophorizon shows typically high amounts of P, calcium (Ca), magnesium (Mg) relative to the surrounding soils. The high amounts of soil organic matter (SOM) and black carbon strongly influence the color, the structure and the hydraulic properties. The texture is lighter and the workability of the ADE is easier, and the drainage is, habitually, very good. Because of their easy workability and longer lasting in relation to surrounding soils, the local population intensively uses those sites. ADE sites seem to be a very resilient soil type to keep their good soil physical qualities as when submitted to an intensive soil management. In this paper we discuss some investigations concerning a better characterization and expansion of the knowledge of ADE sites. Moreover the approach to reproduce those soils using as key component charcoal residues are also reviewed and discussed. Terra Preta r... Mostrar Tudo
Palavras-Chave:  Sequestro de carbono; Terra Preta de Índio.
Categoria do assunto:  --
URL:  https://ainfo.cnptia.embrapa.br/digital/bitstream/item/125126/1/54557db90cf2bccc490ccd51.pdf
Marc:  Mostrar Marc Completo
Registro original:  Embrapa Amazônia Ocidental (CPAA)
Biblioteca ID Origem Tipo/Formato Classificação Cutter Registro Volume Status URL
CPAA28340 - 1UPCAA - PPS1002S1002
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Registro Completo

Biblioteca(s):  Embrapa Milho e Sorgo.
Data corrente:  11/11/1997
Data da última atualização:  13/07/2018
Tipo da produção científica:  Artigo em Periódico Indexado
Autoria:  ABREU, A. de F. B.; RAMALHO, M. A. P.; SANTOS, J. B. dos; PEREIRA FILHO, I. A.
Afiliação:  ISRAEL ALEXANDRE PEREIRA FILHO, CNPMS.
Título:  Effect of genotype x environment interaction on estimations of genetic and phenotypic parameters of common beans.
Ano de publicação:  1990
Fonte/Imprenta:  Revista Brasileira de Genética, Ribeirão Preto, v. 13, n. 1, p. 75-82, 1990.
Idioma:  Inglês
Conteúdo:  Genotype x environment interaction effects on estimations of genotypic and phenotypic parameters were studied, based on seed yield of 97 progenies and three test cultivars of common beans at two different locations in Minas Gerais, Brazil. At one location, Patos de Minas, F7 progenies and test cultivars were evaluated using a simple 10 x 10 lattice design, whereas F8 progenies and test cultivars planted at Sete Lagoas at two density rates comprised two independent experiments with the same statistical design as the former. Results indicated the need to evaluated bean progenies at several environments. This was supported by the fact that the narrow sense heritability value, estimated through covariance analysis, was similar to the realized heritability value, and the genetic expected gain estimate was practically equal to the realized gain estimate. Also, selection effectiveness based on the mean over environments, was three times greather than when based on each individual environment.
Palavras-Chave:  Bean.
Thesagro:  Feijão; Melhoramento; Phaseolus Vulgaris.
Thesaurus NAL:  breeding.
Categoria do assunto:  G Melhoramento Genético
URL:  https://ainfo.cnptia.embrapa.br/digital/bitstream/item/47173/1/Effect-genotype.pdf
Marc:  Mostrar Marc Completo
Registro original:  Embrapa Milho e Sorgo (CNPMS)
Biblioteca ID Origem Tipo/Formato Classificação Cutter Registro Volume Status
CNPMS5926 - 1UPCAP - DD
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