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Registro Completo |
Biblioteca(s): |
Embrapa Arroz e Feijão. |
Data corrente: |
12/03/2004 |
Data da última atualização: |
04/05/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
RODRIGUES, F. Á.; VALE, F. X. R.; DATNOFF, L. E.; PRABHU, A. S.; KORNDÖRFER, G. H. |
Afiliação: |
ANNE SITARAMA PRABHU, CNPAF. |
Título: |
Effect of rice growth stages and silicon on sheath blight development. |
Ano de publicação: |
2003 |
Fonte/Imprenta: |
Phytopathology, v. 93, n. 3, p. 256-261, Mar. 2003. |
DOI: |
10.1094/PHYTO.2003.93.3.256 |
Idioma: |
Inglês |
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 |
Thesagro: |
Arroz; Cálcio; Oryza Sativa; Rhizoctonia Solani. |
Thesaurus Nal: |
Calcium silicate; Rice; Silicon. |
Categoria do assunto: |
H Saúde e Patologia |
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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1. | | SUGAI, L. S. M.; COSTA-PEREIRA, R.; QUINTEIRO, J. M. O.; TORRECILHA, S.; ERIKSSON, A.; NUNES, A. P.; KEUROGHLIAN, A.; ARAUJO, A. C.; PARANHOS FILHO, A. C.; DESBIEZ, A. L. J.; POTT, A.; SANTOS, C. F.; FERREIRA, C. M. M.; RIBEIRO, D. B.; EATON, D. P.; SCREMIN-DIAS, E.; CORRÊA, EL. C.; BURKHARDT, E.; FISCHER, E.; AYRES, F. M.; MARTINS, F. I.; ALVES, F. M.; SEVERO-NETO, F.; SOUZA, F. L.; PAULA, G. A. DE.; SOUZA, G. N. de; SEIXAS, G. H. F.; DALPONTI, G.; BARROS, G. M. de; GRACIOLLI, G.; GIMÊNES JUNIOR, H.; ILHA, I. M. N.; SUGAI, J. L. M. M.; LONGO, J. M.; SABINO, J.; CORDEIRO, L. M.; NASCIMENTO, L. N.; TENCATT, L. F. C.; BUENO, M. L.; RODRIGUES, M. E.; BENITES, M.; SILVA, M.; GODOI, M. N.; SILVEIRA, M.; DELATORRE, M.; RIBEIRO, M. C.; GUEDES, N. M. R.; CUNHA, N. L. da; FROEHLICH, O.; MEDICI, P.; MEDINA JUNIOR, P. B.; SOUZA, P. R. de; FERREIRA, R. P.; LOURIVAL, R. F. F.; GAMARRA, R. M.; BORGHEZAN, R.; LAPS, R. R.; ROCHA, S. B. da; DULEBA, S.; MAMEDE, S.; ESCAPINATI, S. C.; SINANI, T. R. F.; FERREIRA, V. L.; TOMAS, W. M.; SÚAREZ, Y. R.; ROQUE, F. de O. Incorporating biodiversity expert knowledge in landscape conservation planning: a case study involving the Pantanal. In: SIMPÓSIO DE GEOTECNOLOGIAS NO PANTANAL, 5., 2014, Campo Grande, MS. Anais... São José dos Campos: INPE, 2014. p. 544-553. 1 CD-ROM. Geopantanal 2014.Tipo: Artigo em Anais de Congresso |
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