| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Soja. Para informações adicionais entre em contato com valeria.cardoso@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Soja. |
|
Data corrente: |
13/10/1992 |
|
Data da última atualização: |
22/05/2017 |
|
Autoria: |
FRANCA NETO, J. B.; WEST, S. H. |
|
Afiliação: |
EMBRAPA-CNPSo. Londrina, PR. |
|
Título: |
Problems in evaluating viability of soybean seed infected with Phomopsis spp. |
|
Ano de publicação: |
1989 |
|
Fonte/Imprenta: |
Journal of Seed Technology, Beltsville, v.13, n.2, p.122-135, 1989. |
|
Idioma: |
Inglês |
|
Conteúdo: |
The detrimental effects of Phomopsis spp. on seed germination of soybean [Glycine max (L.) Merrill] are broadly recognized. Rolled paper toweling is the most widely used method for testing germination of soybean seed. The validity of the rolled-paper-towel test to determine the actual viability of soybean seed infected with Phomopsis spp. was examined. Seventy-three seed samples of 23 soybean cultivars produced in Florida in 1986 were analyzed for germination, vigor [tetrazolium (TZ) test], and pathogens. Phomopsis spp. were the fungi most frequently associated with soybean seed (up to 77% seed infection). Infection by these microrganisms was mainly restricted to the seedcoat. Deep-seated infection was rare (mean 0.5%). Viability, as obtained by the standard germination test (rolled paper toweling) was drastically reduced by high (> 33%) levels of Phomopsis spp. These detrimental effects were not observed when germination was examined in sand, if conditions were adequate for fast emergence. When seed were tested in sand, the infected seedcoats remained in or on the sand upon emergence, thus the seedlings escaped much of the detrimental effects of infected seedcoats. Therefore, rolled paper toweling was not the best substrate to evaluate germination of soybean seed infeced with high levels of Phomopsis spp. Emergence in sand or the TZ test provided more realistic estimates of viability for seed lots infected with these fungi. Nevertheless, it was noted that as the vigor level expressed by the TZ test decreased, the level of infected seedlings and damping-off tended to increase. MenosThe detrimental effects of Phomopsis spp. on seed germination of soybean [Glycine max (L.) Merrill] are broadly recognized. Rolled paper toweling is the most widely used method for testing germination of soybean seed. The validity of the rolled-paper-towel test to determine the actual viability of soybean seed infected with Phomopsis spp. was examined. Seventy-three seed samples of 23 soybean cultivars produced in Florida in 1986 were analyzed for germination, vigor [tetrazolium (TZ) test], and pathogens. Phomopsis spp. were the fungi most frequently associated with soybean seed (up to 77% seed infection). Infection by these microrganisms was mainly restricted to the seedcoat. Deep-seated infection was rare (mean 0.5%). Viability, as obtained by the standard germination test (rolled paper toweling) was drastically reduced by high (> 33%) levels of Phomopsis spp. These detrimental effects were not observed when germination was examined in sand, if conditions were adequate for fast emergence. When seed were tested in sand, the infected seedcoats remained in or on the sand upon emergence, thus the seedlings escaped much of the detrimental effects of infected seedcoats. Therefore, rolled paper toweling was not the best substrate to evaluate germination of soybean seed infeced with high levels of Phomopsis spp. Emergence in sand or the TZ test provided more realistic estimates of viability for seed lots infected with these fungi. Nevertheless, it was noted that as the vigor level... Mostrar Tudo |
|
Palavras-Chave: |
Disease; Emergence; EUA; Phomopsis spp; Seed; Soybean; Teste; Tetrazolio; Tetrazolium test; USA. |
|
Thesagro: |
Doença; Emergência; Fungo; Germinação; Glycine Max; Semente; Soja. |
|
Thesaurus Nal: |
Florida; germination; vigor. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 02503naa a2200373 a 4500
001 1444629
005 2017-05-22
008 1989 bl uuuu u00u1 u #d
100 1 $aFRANCA NETO, J. B.
245 $aProblems in evaluating viability of soybean seed infected with Phomopsis spp.
260 $c1989
520 $aThe detrimental effects of Phomopsis spp. on seed germination of soybean [Glycine max (L.) Merrill] are broadly recognized. Rolled paper toweling is the most widely used method for testing germination of soybean seed. The validity of the rolled-paper-towel test to determine the actual viability of soybean seed infected with Phomopsis spp. was examined. Seventy-three seed samples of 23 soybean cultivars produced in Florida in 1986 were analyzed for germination, vigor [tetrazolium (TZ) test], and pathogens. Phomopsis spp. were the fungi most frequently associated with soybean seed (up to 77% seed infection). Infection by these microrganisms was mainly restricted to the seedcoat. Deep-seated infection was rare (mean 0.5%). Viability, as obtained by the standard germination test (rolled paper toweling) was drastically reduced by high (> 33%) levels of Phomopsis spp. These detrimental effects were not observed when germination was examined in sand, if conditions were adequate for fast emergence. When seed were tested in sand, the infected seedcoats remained in or on the sand upon emergence, thus the seedlings escaped much of the detrimental effects of infected seedcoats. Therefore, rolled paper toweling was not the best substrate to evaluate germination of soybean seed infeced with high levels of Phomopsis spp. Emergence in sand or the TZ test provided more realistic estimates of viability for seed lots infected with these fungi. Nevertheless, it was noted that as the vigor level expressed by the TZ test decreased, the level of infected seedlings and damping-off tended to increase.
650 $aFlorida
650 $agermination
650 $avigor
650 $aDoença
650 $aEmergência
650 $aFungo
650 $aGerminação
650 $aGlycine Max
650 $aSemente
650 $aSoja
653 $aDisease
653 $aEmergence
653 $aEUA
653 $aPhomopsis spp
653 $aSeed
653 $aSoybean
653 $aTeste
653 $aTetrazolio
653 $aTetrazolium test
653 $aUSA
700 1 $aWEST, S. H.
773 $tJournal of Seed Technology, Beltsville$gv.13, n.2, p.122-135, 1989.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Soja (CNPSO) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Milho e Sorgo; Embrapa Solos. |
|
Data corrente: |
13/12/2022 |
|
Data da última atualização: |
13/01/2023 |
|
Tipo da produção científica: |
Boletim de Pesquisa e Desenvolvimento |
|
Autoria: |
ALBUQUERQUE FILHO, M. R. de; VIANA, J. H. M.; CLEMENTE, E. de P. |
|
Afiliação: |
MANOEL RICARDO DE ALBUQUERQUE FILHO, CNPMS; JOAO HERBERT MOREIRA VIANA, CNPMS; ELIANE DE PAULA CLEMENTE ALMEIDA, CNPS. |
|
Título: |
Avaliação de qualidade do solo no sistema ILPF (URTP Embrapa Milho e Sorgo). |
|
Ano de publicação: |
2022 |
|
Fonte/Imprenta: |
Sete Lagoas: Embrapa Milho e Sorgo, 2022. |
|
Páginas: |
26 p. |
|
Série: |
(Embrapa Milho e Sorgo. Boletim de Pesquisa e Desenvolvimento, 245). |
|
Idioma: |
Português |
|
Conteúdo: |
RESUMO - Os níveis de resistência à penetração do solo e a qualidade da estrutura na camada superficial foram avaliados na Unidade de Referência em sistema ILPF e no cerrado adjacente, na Fazenda Experimental da Embrapa Milho e Sorgo, em Sete Lagoas-MG. O trabalho foi realizado utilizando-se um penetrógrafo eletrônico para avaliar a resistência do solo à penetração até 60 cm de profundidade e o DRES - Diagnóstico Rápido da Estrutura do Solo para a camada de 0 a 20 cm de profundidade. Não houve diferença estatística entre a resistência à penetração no cerrado e no sistema ILPF. A camada de maior resistência no ILPF se localiza mais próxima à superfície e com densidade um pouco mais elevada, mas abaixo do limite de impedimento ao crescimento de raízes e infiltração de água no solo. O DRES mostrou que o ILPF e o cerrado pouco diferiram quanto à qualidade estrutural do solo, mostrando que é um sistema conservacionista eficiente e que deve ser amplamente adotado em solos brasileiros. ABSTRACT - The levels of resistance to soil penetration and the quality of the structure in the surface layer were evaluated in the Reference Unit of Integrated Crop-Livestock-Forestry system (ICLF) and in the adjacent cerrado area, at the Experimental Farm of Embrapa Maize and Sorghum, in Sete Lagoas, state of Minas Gerais, Brazil. The work was carried out using an electronic penetrograph to evaluate the resistance of the soil to penetration up to 60 cm of depth and the DRES - Rapid Diagnosis of Soil Structure for the layer from 0 cm to 20 cm of depth. There was no statistical difference between resistance to penetration in the cerrado and in the ICLF system. The layer of greater resistance in ICLF system is located closer to the surface and with a slightly higher density, but below the limit of impediment to root growth and water infiltration into the soil. The DRES showed that the ICLF system and the cerrado differed little in terms of soil structural quality, showing that it is an efficient conservation system and that it should be widely adopted in Brazilian soils. MenosRESUMO - Os níveis de resistência à penetração do solo e a qualidade da estrutura na camada superficial foram avaliados na Unidade de Referência em sistema ILPF e no cerrado adjacente, na Fazenda Experimental da Embrapa Milho e Sorgo, em Sete Lagoas-MG. O trabalho foi realizado utilizando-se um penetrógrafo eletrônico para avaliar a resistência do solo à penetração até 60 cm de profundidade e o DRES - Diagnóstico Rápido da Estrutura do Solo para a camada de 0 a 20 cm de profundidade. Não houve diferença estatística entre a resistência à penetração no cerrado e no sistema ILPF. A camada de maior resistência no ILPF se localiza mais próxima à superfície e com densidade um pouco mais elevada, mas abaixo do limite de impedimento ao crescimento de raízes e infiltração de água no solo. O DRES mostrou que o ILPF e o cerrado pouco diferiram quanto à qualidade estrutural do solo, mostrando que é um sistema conservacionista eficiente e que deve ser amplamente adotado em solos brasileiros. ABSTRACT - The levels of resistance to soil penetration and the quality of the structure in the surface layer were evaluated in the Reference Unit of Integrated Crop-Livestock-Forestry system (ICLF) and in the adjacent cerrado area, at the Experimental Farm of Embrapa Maize and Sorghum, in Sete Lagoas, state of Minas Gerais, Brazil. The work was carried out using an electronic penetrograph to evaluate the resistance of the soil to penetration up to 60 cm of depth and the DRES - Rapid Diagnosis of Soi... Mostrar Tudo |
|
Palavras-Chave: |
DRES; Penetração; Penetrometria; Penetrometry; Resistência do solo; Soil resistance. |
|
Thesagro: |
Manejo do Solo; Sistema de Cultivo. |
|
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1149570/1/Avaliacao-de-qualidade-do-solo-no-sistema-ILPF-URTP-Embrapa-Milho-e-Sorgo.pdf
|
|
Marc: |
LEADER 02888nam a2200253 a 4500
001 2149570
005 2023-01-13
008 2022 bl uuuu u0uu1 u #d
100 1 $aALBUQUERQUE FILHO, M. R. de
245 $aAvaliação de qualidade do solo no sistema ILPF (URTP Embrapa Milho e Sorgo).$h[electronic resource]
260 $aSete Lagoas: Embrapa Milho e Sorgo$c2022
300 $a26 p.
490 $a(Embrapa Milho e Sorgo. Boletim de Pesquisa e Desenvolvimento, 245).
520 $aRESUMO - Os níveis de resistência à penetração do solo e a qualidade da estrutura na camada superficial foram avaliados na Unidade de Referência em sistema ILPF e no cerrado adjacente, na Fazenda Experimental da Embrapa Milho e Sorgo, em Sete Lagoas-MG. O trabalho foi realizado utilizando-se um penetrógrafo eletrônico para avaliar a resistência do solo à penetração até 60 cm de profundidade e o DRES - Diagnóstico Rápido da Estrutura do Solo para a camada de 0 a 20 cm de profundidade. Não houve diferença estatística entre a resistência à penetração no cerrado e no sistema ILPF. A camada de maior resistência no ILPF se localiza mais próxima à superfície e com densidade um pouco mais elevada, mas abaixo do limite de impedimento ao crescimento de raízes e infiltração de água no solo. O DRES mostrou que o ILPF e o cerrado pouco diferiram quanto à qualidade estrutural do solo, mostrando que é um sistema conservacionista eficiente e que deve ser amplamente adotado em solos brasileiros. ABSTRACT - The levels of resistance to soil penetration and the quality of the structure in the surface layer were evaluated in the Reference Unit of Integrated Crop-Livestock-Forestry system (ICLF) and in the adjacent cerrado area, at the Experimental Farm of Embrapa Maize and Sorghum, in Sete Lagoas, state of Minas Gerais, Brazil. The work was carried out using an electronic penetrograph to evaluate the resistance of the soil to penetration up to 60 cm of depth and the DRES - Rapid Diagnosis of Soil Structure for the layer from 0 cm to 20 cm of depth. There was no statistical difference between resistance to penetration in the cerrado and in the ICLF system. The layer of greater resistance in ICLF system is located closer to the surface and with a slightly higher density, but below the limit of impediment to root growth and water infiltration into the soil. The DRES showed that the ICLF system and the cerrado differed little in terms of soil structural quality, showing that it is an efficient conservation system and that it should be widely adopted in Brazilian soils.
650 $aManejo do Solo
650 $aSistema de Cultivo
653 $aDRES
653 $aPenetração
653 $aPenetrometria
653 $aPenetrometry
653 $aResistência do solo
653 $aSoil resistance
700 1 $aVIANA, J. H. M.
700 1 $aCLEMENTE, E. de P.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
