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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
14/05/2007 |
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Data da última atualização: |
31/08/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
GHINI, R.; MORANDI, M. A. B. |
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Afiliação: |
RAQUEL GHINI, CNPMA; MARCELO AUGUSTO BOECHAT MORANDI, CNPMA. |
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Título: |
Biotic and abiotic factors associated with soil supressiveness to Rhizoctonia solani. |
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Ano de publicação: |
2006 |
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Fonte/Imprenta: |
Scientia Agricola, Piracicaba, v. 63, n. 2, p. 153-160, mar./abr. 2006. |
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Idioma: |
Inglês |
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Conteúdo: |
Crop management may modify soil characteristics, and as a consequence, alter incidence of diseases caused by soilborne pathogens. This study evaluated the suppressiveness to R. solani in 59 soil samples from a microbasin. Soil sampling areas included undisturbed forest, pasture and fallow ground areas, annual crops, perennial crops, and ploughed soil. The soil samples were characterized according to abiotic variables (pH; electrical conductivity; organic matter content; N total; P; K; Ca; Mg; Al; H; S; Na; Fe; Mn; Cu; Zn; B; cation exchange capacity; sum of bases and base saturation) and biotic variables (total microbial activity evaluated by the CO2 evolution and fluorescein diacetate hydrolysis; culturable bacterial, fungal, actinomycetes, protozoa, fluorescent Pseudomonas and Fusarium spp. communities). The contribution and relationships of these variables to suppression to R. solani were assessed by path analysis. When all samples were analyzed together, only abiotic variables correlated with suppression of R. solani, but the entire set of variables explained only 51% of the total variation. However, when samples were grouped and analyzed by vegetation cover, the set of evaluated variables in all cases accounted for more than 90% of the variation in suppression of the pathogen. In highly suppressive soils of forest and pasture/ fallow ground areas, several abiotic variables and fluorescein diacetate hydrolysis correlated with suppression of R. solani and the set of variables explained more than 98% of suppressiveness. MenosCrop management may modify soil characteristics, and as a consequence, alter incidence of diseases caused by soilborne pathogens. This study evaluated the suppressiveness to R. solani in 59 soil samples from a microbasin. Soil sampling areas included undisturbed forest, pasture and fallow ground areas, annual crops, perennial crops, and ploughed soil. The soil samples were characterized according to abiotic variables (pH; electrical conductivity; organic matter content; N total; P; K; Ca; Mg; Al; H; S; Na; Fe; Mn; Cu; Zn; B; cation exchange capacity; sum of bases and base saturation) and biotic variables (total microbial activity evaluated by the CO2 evolution and fluorescein diacetate hydrolysis; culturable bacterial, fungal, actinomycetes, protozoa, fluorescent Pseudomonas and Fusarium spp. communities). The contribution and relationships of these variables to suppression to R. solani were assessed by path analysis. When all samples were analyzed together, only abiotic variables correlated with suppression of R. solani, but the entire set of variables explained only 51% of the total variation. However, when samples were grouped and analyzed by vegetation cover, the set of evaluated variables in all cases accounted for more than 90% of the variation in suppression of the pathogen. In highly suppressive soils of forest and pasture/ fallow ground areas, several abiotic variables and fluorescein diacetate hydrolysis correlated with suppression of R. solani and the set of varia... Mostrar Tudo |
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Palavras-Chave: |
Correlação; Fatores abióticos; Fatores bióticos; Patógeno de solo; Solo supressivo; Supressividade. |
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Thesagro: |
Controle biológico; Microbiologia do Solo. |
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Thesaurus Nal: |
Rhizoctonia. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/125709/1/2006AP-019.pdf
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Marc: |
LEADER 02277naa a2200241 a 4500
001 1015380
005 2015-08-31
008 2006 bl uuuu u00u1 u #d
100 1 $aGHINI, R.
245 $aBiotic and abiotic factors associated with soil supressiveness to Rhizoctonia solani.$h[electronic resource]
260 $c2006
520 $aCrop management may modify soil characteristics, and as a consequence, alter incidence of diseases caused by soilborne pathogens. This study evaluated the suppressiveness to R. solani in 59 soil samples from a microbasin. Soil sampling areas included undisturbed forest, pasture and fallow ground areas, annual crops, perennial crops, and ploughed soil. The soil samples were characterized according to abiotic variables (pH; electrical conductivity; organic matter content; N total; P; K; Ca; Mg; Al; H; S; Na; Fe; Mn; Cu; Zn; B; cation exchange capacity; sum of bases and base saturation) and biotic variables (total microbial activity evaluated by the CO2 evolution and fluorescein diacetate hydrolysis; culturable bacterial, fungal, actinomycetes, protozoa, fluorescent Pseudomonas and Fusarium spp. communities). The contribution and relationships of these variables to suppression to R. solani were assessed by path analysis. When all samples were analyzed together, only abiotic variables correlated with suppression of R. solani, but the entire set of variables explained only 51% of the total variation. However, when samples were grouped and analyzed by vegetation cover, the set of evaluated variables in all cases accounted for more than 90% of the variation in suppression of the pathogen. In highly suppressive soils of forest and pasture/ fallow ground areas, several abiotic variables and fluorescein diacetate hydrolysis correlated with suppression of R. solani and the set of variables explained more than 98% of suppressiveness.
650 $aRhizoctonia
650 $aControle biológico
650 $aMicrobiologia do Solo
653 $aCorrelação
653 $aFatores abióticos
653 $aFatores bióticos
653 $aPatógeno de solo
653 $aSolo supressivo
653 $aSupressividade
700 1 $aMORANDI, M. A. B.
773 $tScientia Agricola, Piracicaba$gv. 63, n. 2, p. 153-160, mar./abr. 2006.
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Ocidental. |
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Data corrente: |
26/04/2006 |
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Data da última atualização: |
26/02/2019 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
CRAVO, M. da S.; ATROCH, A. L.; MACEDO, J. L. V. de; NASCIMENTO FILHO, F. J. do; LIMA, L. dos P.; RIBEIRO, J. de R. C. |
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Afiliação: |
Manoel da Silva Cravo, CPATU; JEFERSON LUIS VASCONCELOS DE MACEDO, CPAA; FIRMINO JOSE DO NASCIMENTO FILHO, CPAA. |
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Título: |
Estimativa da exportação de nutrientes pela colheita de guaraná (Paullinia cupana var. sorbilis) no Estado do Amazonas. |
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Ano de publicação: |
2005 |
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Fonte/Imprenta: |
In: SEMINÁRIO SOBRE PESQUISAS COM O GUARANAZEIRO NA AMAZÔNIA, 1., 2005, Manaus. Anais... Manaus: Embrapa Amazônia Ocidental, 2005. p. 245-250. |
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Descrição Física: |
1 CD-ROM. |
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Idioma: |
Português |
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Conteúdo: |
O objetivo deste trabalho foi estudar a exportação de nutrientes pela colheita de alguns clones, que atualmente são recomendados para plantios comerciais, de tal forma que se defina uma adubação de reposição específica para a cultura do guaraná. |
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Palavras-Chave: |
Nutrição mineral. |
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Thesagro: |
Clone; Guaraná; Paullinia Cupana. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/63426/1/Anais247-252.pdf
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Marc: |
LEADER 01051nam a2200229 a 4500
001 1677970
005 2019-02-26
008 2005 bl uuuu u00u1 u #d
100 1 $aCRAVO, M. da S.
245 $aEstimativa da exportação de nutrientes pela colheita de guaraná (Paullinia cupana var. sorbilis) no Estado do Amazonas.
260 $aIn: SEMINÁRIO SOBRE PESQUISAS COM O GUARANAZEIRO NA AMAZÔNIA, 1., 2005, Manaus. Anais... Manaus: Embrapa Amazônia Ocidental, 2005. p. 245-250.$c2005
300 $c1 CD-ROM.
520 $aO objetivo deste trabalho foi estudar a exportação de nutrientes pela colheita de alguns clones, que atualmente são recomendados para plantios comerciais, de tal forma que se defina uma adubação de reposição específica para a cultura do guaraná.
650 $aClone
650 $aGuaraná
650 $aPaullinia Cupana
653 $aNutrição mineral
700 1 $aATROCH, A. L.
700 1 $aMACEDO, J. L. V. de
700 1 $aNASCIMENTO FILHO, F. J. do
700 1 $aLIMA, L. dos P.
700 1 $aRIBEIRO, J. de R. C.
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Registro original: |
Embrapa Amazônia Ocidental (CPAA) |
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