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 | Acesso ao texto completo restrito à biblioteca da Embrapa Arroz e Feijão. Para informações adicionais entre em contato com cnpaf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
12/03/2004 |
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Data da última atualização: |
04/05/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
RODRIGUES, F. Á.; VALE, F. X. R.; DATNOFF, L. E.; PRABHU, A. S.; KORNDÖRFER, G. H. |
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Afiliação: |
ANNE SITARAMA PRABHU, CNPAF. |
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Título: |
Effect of rice growth stages and silicon on sheath blight development. |
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Ano de publicação: |
2003 |
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Fonte/Imprenta: |
Phytopathology, v. 93, n. 3, p. 256-261, Mar. 2003. |
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DOI: |
10.1094/PHYTO.2003.93.3.256 |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of this study was to determine the effect of silicon (Si) and rice growth stages on tissue susceptibility to sheath blight (Rhizoctonia solani Kühn) under controlled conditions. Rice plants (cv. Rio Formoso) were grown in pots containing low-Si soil amended with Si at 0, 0.48, 0.96, 1.44, and 1.92 g pot(-1) and inoculated with R. solani at the following days after emergence: 45 (four-leaf stage), 65 (eight-leaf stage), 85 (tillering), 117 (booting), and 130 (panicle exsertion). For plants inoculated with R. solani at all growth stages, Si concentration in straw increased as rate of Si increased from 0 to 1.92 g pot(-1). Concentration of calcium in the straw did not differ among plant growth stages. Although incubation period was not affected by the amount of Si added to the soil, this variable was shorter at booting and panicle exsertion stages. As the rates of Si increased in the soil, the total number of sheath blight lesions on sheaths and total area under the relative lesion extension curve decreased at all plant growth stages. The severity of sheath blight was lower at booting and panicle exsertion stages as the rates of Si increased in the soil. In general, plants grown in Si-nonamended pots and inoculated with R. solani were more vulnerable to infection at all growth stages, but especially at 45 days after emergence. Plant dry weights for inoculated plants increased as the Si rates increased from 0 to 1.92 g pot(-1). The greatest dry weight increases occurred for plants inoculated at booting and panicle exsertion stages. Si fertilization is a promising method for controlling sheath blight in areas where soil is Si deficient and when cultivars that exhibit an acceptable level of resistance to sheath blight are not available for commercial use. MenosThe objective of this study was to determine the effect of silicon (Si) and rice growth stages on tissue susceptibility to sheath blight (Rhizoctonia solani Kühn) under controlled conditions. Rice plants (cv. Rio Formoso) were grown in pots containing low-Si soil amended with Si at 0, 0.48, 0.96, 1.44, and 1.92 g pot(-1) and inoculated with R. solani at the following days after emergence: 45 (four-leaf stage), 65 (eight-leaf stage), 85 (tillering), 117 (booting), and 130 (panicle exsertion). For plants inoculated with R. solani at all growth stages, Si concentration in straw increased as rate of Si increased from 0 to 1.92 g pot(-1). Concentration of calcium in the straw did not differ among plant growth stages. Although incubation period was not affected by the amount of Si added to the soil, this variable was shorter at booting and panicle exsertion stages. As the rates of Si increased in the soil, the total number of sheath blight lesions on sheaths and total area under the relative lesion extension curve decreased at all plant growth stages. The severity of sheath blight was lower at booting and panicle exsertion stages as the rates of Si increased in the soil. In general, plants grown in Si-nonamended pots and inoculated with R. solani were more vulnerable to infection at all growth stages, but especially at 45 days after emergence. Plant dry weights for inoculated plants increased as the Si rates increased from 0 to 1.92 g pot(-1). The greatest dry weight increases occ... Mostrar Tudo |
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Thesagro: |
Arroz; Cálcio; Oryza Sativa; Rhizoctonia Solani. |
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Thesaurus Nal: |
Calcium silicate; Rice; Silicon. |
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Categoria do assunto: |
H Saúde e Patologia |
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Marc: |
LEADER 02530naa a2200265 a 4500
001 1211956
005 2022-05-04
008 2003 bl uuuu u00u1 u #d
024 7 $a10.1094/PHYTO.2003.93.3.256$2DOI
100 1 $aRODRIGUES, F. Á.
245 $aEffect of rice growth stages and silicon on sheath blight development.$h[electronic resource]
260 $c2003
520 $aThe objective of this study was to determine the effect of silicon (Si) and rice growth stages on tissue susceptibility to sheath blight (Rhizoctonia solani Kühn) under controlled conditions. Rice plants (cv. Rio Formoso) were grown in pots containing low-Si soil amended with Si at 0, 0.48, 0.96, 1.44, and 1.92 g pot(-1) and inoculated with R. solani at the following days after emergence: 45 (four-leaf stage), 65 (eight-leaf stage), 85 (tillering), 117 (booting), and 130 (panicle exsertion). For plants inoculated with R. solani at all growth stages, Si concentration in straw increased as rate of Si increased from 0 to 1.92 g pot(-1). Concentration of calcium in the straw did not differ among plant growth stages. Although incubation period was not affected by the amount of Si added to the soil, this variable was shorter at booting and panicle exsertion stages. As the rates of Si increased in the soil, the total number of sheath blight lesions on sheaths and total area under the relative lesion extension curve decreased at all plant growth stages. The severity of sheath blight was lower at booting and panicle exsertion stages as the rates of Si increased in the soil. In general, plants grown in Si-nonamended pots and inoculated with R. solani were more vulnerable to infection at all growth stages, but especially at 45 days after emergence. Plant dry weights for inoculated plants increased as the Si rates increased from 0 to 1.92 g pot(-1). The greatest dry weight increases occurred for plants inoculated at booting and panicle exsertion stages. Si fertilization is a promising method for controlling sheath blight in areas where soil is Si deficient and when cultivars that exhibit an acceptable level of resistance to sheath blight are not available for commercial use.
650 $aCalcium silicate
650 $aRice
650 $aSilicon
650 $aArroz
650 $aCálcio
650 $aOryza Sativa
650 $aRhizoctonia Solani
700 1 $aVALE, F. X. R.
700 1 $aDATNOFF, L. E.
700 1 $aPRABHU, A. S.
700 1 $aKORNDÖRFER, G. H.
773 $tPhytopathology$gv. 93, n. 3, p. 256-261, Mar. 2003.
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Embrapa Arroz e Feijão (CNPAF) |
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| Registros recuperados : 17 | |
| 6. |  | MANESCHY, R. Q.; VEIGA, J. B. da; DUTRA, S. Avaliação de sistemas silvipastoris com Tectona grandis L.F. em Castanhal, Pará, Brasil. In: REUNIÃO ANUAL DA SBPC, 59., 2007, Belém, PA. Resumos... Belém, PA: SBPC, [2007].| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 8. | | MANESCHY, R. Q.; VEIGA, J. B. da; DUTRA, S. Potencial de adoção de sistemas silvipastoris por produtores da região da Transamazônica. In: CONGRESO LATINOAMERICANO DE AGROFORESTERÍA PARA LA PRODUCCIÓN PECUARIA SOSTENIBLE, 4.; SIMPOSIO SOBRE SISTEMAS SILVIPASTORILES PARA LA PRODUCCIÓN GANADERA SOSTENIBLE, 3., 2006, Varadero. Resúmenes. [Cuba]: Estación Experimental de Pastos y Forrages "Indio Hatuey", 2006. p. 130. Editores: Luis Lamela López, Jesús Suárez Hernández, Nayda Armengol López, Alicia Ojeda González.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 10. | | MANESCHY, R. Q.; VEIGA, J. B. da; DUTRA, S. Levantamento de sistemas silvipastoris no estado do Pará, Brasil. In: CONGRESO LATINOAMERICANO DE AGROFORESTERÍA PARA LA PRODUCCIÓN PECUARIA SOSTENIBLE, 4.; SIMPOSIO SOBRE SISTEMAS SILVIPASTORILES PARA LA PRODUCCIÓN GANADERA SOSTENIBLE, 3., 2006, Varadero. Resúmenes. [Cuba]: Estación Experimental de Pastos y Forrages "Indio Hatuey", 2006. p. 141. Editores: Luis Lamela López, Jesús Suárez Hernández, Nayda Armengol López, Alicia Ojeda González.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 15. | | MANESCHY, R. Q.; SARMENTO, C. M. B.; BRIENZA JUNIOR, S.; YARED, J. A. G.; VEIGA, J. B. da. Uma análise sobre sistemas silvipastoris na Amazônia brasileira. In: CONGRESSO BRASILEIRO DE AGROECOLOGIA, 3.; SEMINÁRIO ESTADUAL DE AGROECOLOGIA, 3., 2005, Florianópolis. A sociedade construindo conhecimentos para a vida: anais. Florianópolis: Associação Brasileira de Agroecologia, 2005. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 16. | | BRIENZA JUNIOR, S.; MANESCHY, R. Q.; MOURÃO JUNIOR, M.; GAZEL FILHO, A. B.; YARED, J. A. G.; GONÇALVES, D.; GAMA, M. B. Sistemas agroflorestais na Amazônia Brasileira: análise de 25 Anos de pesquisas. Pesquisa Florestal Brasileira, Colombo, n. 60, p. 67-76, dez. 2009.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 3 |
| Biblioteca(s): Embrapa Amapá; Embrapa Amazônia Oriental; Embrapa Florestas; Embrapa Rondônia. |
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| 17. | | MANESCHY, R. Q.; MENEZES, A. J. E. A. de; SARMENTO, C. M. B.; CONCEIÇÃO, C. C. C. da; PEREIRA, C. L. O.; FILGUEIRAS, G. da C.; SAWAKI, H. H.; CORDEIRO, I. M. C. C.; LOPES, M.; SAMPAIO, S. M. N.; OLIVEIRA, V. C. de; MELO, V. S.; BRIENZA JUNIOR, S.; YARED, J. A. G.; MOURÃO JUNIOR, M. Biodiversidade de espécies frutíferas e medicinais em quintais de um assentamento rural na Amazônia Oriental brasileira. In: CONGRESSO BRASILEIRO DE SISTEMAS AGROFLORESTAIS, 6., 2006, Campos dos Goytacazes. Sistemas agroflorestais: bases científicas para o desenvolvimento sustentável. Campos dos Goytacazes: Universidade Estadual do Norte Fluminense Darcy Ribeiro; Salvador: Sociedade Brasileira de Sistemas Agroflorestais, 2006. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| Registros recuperados : 17 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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