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Registro Completo |
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Biblioteca(s): |
Embrapa Agricultura Digital. |
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Data corrente: |
01/02/2018 |
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Data da última atualização: |
01/02/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CARVALHO, J. C. B. de; ESPINDOLA, C. R.; ALVES, M. C.; GREGO, C. R.; VIEIRA, S. R. |
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Afiliação: |
JOSEANE CARINA BORGES DE CARVALHO, Secretaria da Educação do Estado de São Paulo; CARLOS ROBERTO ESPINDOLA, IG/Unicamp; MARLENE CRISTINA ALVES, Unesp; CELIA REGINA GREGO, CNPTIA; SIDNEY ROSA VIEIRA. |
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Título: |
Spatial analysis of soil physical attributes from a degraded area under different types of management. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
African Journal of Environmental Science and Technology, v. 11, n. 9, p. 486-498, Sept. 2017. |
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DOI: |
10.5897/AJEST2016.2256 |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of this work was to analyze the spatial variability of soil aggregates, porosity and density under five different land-uses and management conditions (degraded substrate - SD; degraded substrate with sewage sludge and Eucalyptus crop - SDLE; soil under pasture SP; capoeira under regeneration - SR; and soil under cerrado - SC). Total porosity (m3.m-3) and density (Mg m-3) of the soil; the mean weight diameter (MWD, mm) of the aggregates; and the percentage of aggregates resistant to rainfall were evaluated. The date of soil was analyzed with descriptive statistics for initial exploration and geostatistics, to analyze the spatial variability. There was spatial dependency and the parameter adjust range varied from 8 to 12 m under the treatments SD and SR for the aggregates and SR for macroporosity, total porosity and soil density. There was spatial dependency also under SP, for the aggregates, microporosity, and total porosity; under SC, for the aggregates; and under SDLE, for microporosity. Soil data with spatial dependence in the field were characterized both by high and low values in the same area. Therefore it is not adequate to consider these areas as homogeneous for future experiments and agricultural activities. |
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Palavras-Chave: |
Análise espacial; Geoestatística; Spatial variability. |
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Thesaurus Nal: |
Geostatistics; Soil aggregates. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/172002/1/AP-Spatial-analysis-Grego-etal.pdf
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Marc: |
LEADER 02028naa a2200241 a 4500
001 2086890
005 2018-02-01
008 2017 bl uuuu u00u1 u #d
024 7 $a10.5897/AJEST2016.2256$2DOI
100 1 $aCARVALHO, J. C. B. de
245 $aSpatial analysis of soil physical attributes from a degraded area under different types of management.$h[electronic resource]
260 $c2017
520 $aThe objective of this work was to analyze the spatial variability of soil aggregates, porosity and density under five different land-uses and management conditions (degraded substrate - SD; degraded substrate with sewage sludge and Eucalyptus crop - SDLE; soil under pasture SP; capoeira under regeneration - SR; and soil under cerrado - SC). Total porosity (m3.m-3) and density (Mg m-3) of the soil; the mean weight diameter (MWD, mm) of the aggregates; and the percentage of aggregates resistant to rainfall were evaluated. The date of soil was analyzed with descriptive statistics for initial exploration and geostatistics, to analyze the spatial variability. There was spatial dependency and the parameter adjust range varied from 8 to 12 m under the treatments SD and SR for the aggregates and SR for macroporosity, total porosity and soil density. There was spatial dependency also under SP, for the aggregates, microporosity, and total porosity; under SC, for the aggregates; and under SDLE, for microporosity. Soil data with spatial dependence in the field were characterized both by high and low values in the same area. Therefore it is not adequate to consider these areas as homogeneous for future experiments and agricultural activities.
650 $aGeostatistics
650 $aSoil aggregates
653 $aAnálise espacial
653 $aGeoestatística
653 $aSpatial variability
700 1 $aESPINDOLA, C. R.
700 1 $aALVES, M. C.
700 1 $aGREGO, C. R.
700 1 $aVIEIRA, S. R.
773 $tAfrican Journal of Environmental Science and Technology$gv. 11, n. 9, p. 486-498, Sept. 2017.
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Registro original: |
Embrapa Agricultura Digital (CNPTIA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
10/03/2016 |
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Data da última atualização: |
10/03/2016 |
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Autoria: |
POPPI, L. B.; RIVALDI, J. D.; COUTINHO, T. S.; ASTOLFI-FERREIRA, C. S.; FERREIRA, A. J. P.; MANCILHA, I. M. |
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Afiliação: |
LARISSA B. POPPI, USP; JAVIER D. RIVALDI, USP/Universidad National de Asunción; THAIS S. COUTINHO, USP; CLAUDETE S. ASTOLFI-FERREIRA, FMVZ/USP; ANTONIO J. PIANTINO FERREIRA, FMVZ/USP; ISMAEL M. MANCILHA, USP/UFV. |
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Título: |
Effect of Lactobacillus sp. isolates supernatant on Escherichia coli 0157:H7 enhances the role of organic acids production as a factor for pathogen control. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Pesquisa Veterinária Brasileira, Brasília, DF, v. 35. n. 4, p. 353-359, abr. 2015. |
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Idioma: |
Inglês |
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Conteúdo: |
Many attempts have been made to establish the control of foodborne pathogens through Lactobacillus isolates and their metabolism products with success being obtained in several situations. The aim of this study was to investigate the antagonistic effect of eight Lactobacillus isolates, including L. casei subsp. pseudoplantarum, L. plantarum, L. reuteri and L. delbrueckii subsp. delbrueckii, on the pathogenic Escherichia coli strain O157:H7. The inhibitory effect of pure cultures and two pooled cultures supernatants of Lactobacillus on the growth of pathogenic bacteria was evaluated by the spot agar method and by monitoring turbidity. Antimicrobial activity was confirmed for L. reuteri and L. delbrueckii subsp. delbrueckii and for a pool of lactic acid bacteria. The neutralized supernatant of the pool exerted a higher antimicrobial activity than that of the individual strains. Furthermore, D-lactic acid and acetic acid were produced during growth of the Lactobacillus isolates studied. |
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Palavras-Chave: |
Escherichia coli 0157 H7. |
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Thesagro: |
Ácido orgânico; Antagonismo. |
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Thesaurus NAL: |
Lactobacillus; Organic acids and salts. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/140980/1/Effect-of-Lactobacillus-sp.pdf
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Marc: |
LEADER 01804naa a2200241 a 4500
001 2040513
005 2016-03-10
008 2015 bl uuuu u00u1 u #d
100 1 $aPOPPI, L. B.
245 $aEffect of Lactobacillus sp. isolates supernatant on Escherichia coli 0157$bH7 enhances the role of organic acids production as a factor for pathogen control.
260 $c2015
520 $aMany attempts have been made to establish the control of foodborne pathogens through Lactobacillus isolates and their metabolism products with success being obtained in several situations. The aim of this study was to investigate the antagonistic effect of eight Lactobacillus isolates, including L. casei subsp. pseudoplantarum, L. plantarum, L. reuteri and L. delbrueckii subsp. delbrueckii, on the pathogenic Escherichia coli strain O157:H7. The inhibitory effect of pure cultures and two pooled cultures supernatants of Lactobacillus on the growth of pathogenic bacteria was evaluated by the spot agar method and by monitoring turbidity. Antimicrobial activity was confirmed for L. reuteri and L. delbrueckii subsp. delbrueckii and for a pool of lactic acid bacteria. The neutralized supernatant of the pool exerted a higher antimicrobial activity than that of the individual strains. Furthermore, D-lactic acid and acetic acid were produced during growth of the Lactobacillus isolates studied.
650 $aLactobacillus
650 $aOrganic acids and salts
650 $aÁcido orgânico
650 $aAntagonismo
653 $aEscherichia coli 0157 H7
700 1 $aRIVALDI, J. D.
700 1 $aCOUTINHO, T. S.
700 1 $aASTOLFI-FERREIRA, C. S.
700 1 $aFERREIRA, A. J. P.
700 1 $aMANCILHA, I. M.
773 $tPesquisa Veterinária Brasileira, Brasília, DF$gv. 35. n. 4, p. 353-359, abr. 2015.
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Embrapa Unidades Centrais (AI-SEDE) |
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