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 | Acesso ao texto completo restrito à biblioteca da Embrapa Soja. Para informações adicionais entre em contato com valeria.cardoso@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
16/12/2008 |
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Data da última atualização: |
26/07/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
KUMUDINI, S.; GODOY, C. V.; BOARD, J. E.; OMIELAN, J.; TOLLENAAR, M. |
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Afiliação: |
University of Kentucky; CLAUDIA VIEIRA GODOY, CNPSO; University Baton Rouge; University of Kentucky Lexington; University of Guelph. |
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Título: |
Mechanisms involved in soybean rust-induced yield reduction. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
Crop Science, v. 48, n. 6, p. 2334-2342, Nov./Dec. 2008 |
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ISBN: |
10.2135/cropsci2008.01.0009 |
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Idioma: |
Inglês |
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Conteúdo: |
Soybean rust (SBR; caused by Phakopsora pachyrhizi Syd. and P. Syd.) leads to premature leaf loss and yield reduction. The objectives of this study were to assess effects of SBR infection on soybean [Glycine max (L.) Merrill] yield and to identify causes for the yield reduction. Experiments were conducted in the 2005-2006 and 2006-2007 growing seasons at Londrina, Brazil. The five treatments were SBR infection beginning at either (i) the R2 or (ii) R5 growth stages; nondiseased defoliation treatments to mimic the leaf loss when SBR started at either (iii) the R2 or (iv) R5 growth stages; and (v) a disease-free, nondefoliated control. The control and defoliation treatments were protected against SBR by fungicide applications. Disease severity, lesion area, and leaf area were monitored from R2 to R7. Biomass and seed yield were measured at maturity. Mean SBR-induced yield reductions were 67% when infection started at R2 and 37% when infection started at R5. Leaf loss alone reduced yield significantly in only one year and only when defoliation treatments were begun at R2 (31% in 2005-2006). Soybean rust-induced yield loss was attributable to (i) premature leaf loss, (ii) reduction in canopy green leaf area due to SBR lesions, (iii) reduction in dry matter accumulation per unit absorbed radiation by the nonlesion green leaf area, and (iv) reduction in harvest index. The response of harvest index was attributable to reduced seed set and seed mass resulting likely from SBR-induced reductions in rate of dry matter accumulation. MenosSoybean rust (SBR; caused by Phakopsora pachyrhizi Syd. and P. Syd.) leads to premature leaf loss and yield reduction. The objectives of this study were to assess effects of SBR infection on soybean [Glycine max (L.) Merrill] yield and to identify causes for the yield reduction. Experiments were conducted in the 2005-2006 and 2006-2007 growing seasons at Londrina, Brazil. The five treatments were SBR infection beginning at either (i) the R2 or (ii) R5 growth stages; nondiseased defoliation treatments to mimic the leaf loss when SBR started at either (iii) the R2 or (iv) R5 growth stages; and (v) a disease-free, nondefoliated control. The control and defoliation treatments were protected against SBR by fungicide applications. Disease severity, lesion area, and leaf area were monitored from R2 to R7. Biomass and seed yield were measured at maturity. Mean SBR-induced yield reductions were 67% when infection started at R2 and 37% when infection started at R5. Leaf loss alone reduced yield significantly in only one year and only when defoliation treatments were begun at R2 (31% in 2005-2006). Soybean rust-induced yield loss was attributable to (i) premature leaf loss, (ii) reduction in canopy green leaf area due to SBR lesions, (iii) reduction in dry matter accumulation per unit absorbed radiation by the nonlesion green leaf area, and (iv) reduction in harvest index. The response of harvest index was attributable to reduced seed set and seed mass resulting likely from SBR-induced... Mostrar Tudo |
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Palavras-Chave: |
Ferrugem da soja. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02033naa a2200181 a 4500
001 1471598
005 2017-07-26
008 2008 bl uuuu u00u1 u #d
100 1 $aKUMUDINI, S.
245 $aMechanisms involved in soybean rust-induced yield reduction.
260 $c2008
520 $aSoybean rust (SBR; caused by Phakopsora pachyrhizi Syd. and P. Syd.) leads to premature leaf loss and yield reduction. The objectives of this study were to assess effects of SBR infection on soybean [Glycine max (L.) Merrill] yield and to identify causes for the yield reduction. Experiments were conducted in the 2005-2006 and 2006-2007 growing seasons at Londrina, Brazil. The five treatments were SBR infection beginning at either (i) the R2 or (ii) R5 growth stages; nondiseased defoliation treatments to mimic the leaf loss when SBR started at either (iii) the R2 or (iv) R5 growth stages; and (v) a disease-free, nondefoliated control. The control and defoliation treatments were protected against SBR by fungicide applications. Disease severity, lesion area, and leaf area were monitored from R2 to R7. Biomass and seed yield were measured at maturity. Mean SBR-induced yield reductions were 67% when infection started at R2 and 37% when infection started at R5. Leaf loss alone reduced yield significantly in only one year and only when defoliation treatments were begun at R2 (31% in 2005-2006). Soybean rust-induced yield loss was attributable to (i) premature leaf loss, (ii) reduction in canopy green leaf area due to SBR lesions, (iii) reduction in dry matter accumulation per unit absorbed radiation by the nonlesion green leaf area, and (iv) reduction in harvest index. The response of harvest index was attributable to reduced seed set and seed mass resulting likely from SBR-induced reductions in rate of dry matter accumulation.
653 $aFerrugem da soja
700 1 $aGODOY, C. V.
700 1 $aBOARD, J. E.
700 1 $aOMIELAN, J.
700 1 $aTOLLENAAR, M.
773 $tCrop Science$gv. 48, n. 6, p. 2334-2342, Nov./Dec. 2008
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Registro original: |
Embrapa Soja (CNPSO) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Cerrados. Para informações adicionais entre em contato com cpac.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
10/12/2009 |
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Data da última atualização: |
10/12/2009 |
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Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
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Autoria: |
SILVA, F. A. M. da; EVANGELISTA, B. A.; MULLER, A. G.; LOPES, T. S. de S. |
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Afiliação: |
FERNANDO ANTONIO MACENA DA SILVA, CPAC; BALBINO ANTONIO EVANGELISTA, CNPSo; ARTUR GUSTAVO MULLER, CPAC; THAISE SUSSANE DE SOUZA LOPES, CPAC. |
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Título: |
Épocas de semeadura com baixo risco climático para a cultura do milho em consórcio com a brachiária no estado de Goiás. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE AGROMETEOROLOGIA, 16., 2009, Belo Horizonte. Mudanças climáticas, recursos hídricos e energia para uma agricultura sustentável. Belo Horizonte: SBA: UFV: CNPMS, 2009. 1 CD-ROM. |
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Idioma: |
Português |
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Palavras-Chave: |
Goiás. |
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Thesagro: |
Capim brachiaria; Cerrado; Consorciação de cultura; Meteorologia; Milho; Recurso hídrico. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00850naa a2200229 a 4500
001 1577688
005 2009-12-10
008 2009 bl uuuu u00u1 u #d
100 1 $aSILVA, F. A. M. da
245 $aÉpocas de semeadura com baixo risco climático para a cultura do milho em consórcio com a brachiária no estado de Goiás.
260 $c2009
650 $aCapim brachiaria
650 $aCerrado
650 $aConsorciação de cultura
650 $aMeteorologia
650 $aMilho
650 $aRecurso hídrico
653 $aGoiás
700 1 $aEVANGELISTA, B. A.
700 1 $aMULLER, A. G.
700 1 $aLOPES, T. S. de S.
773 $tIn: CONGRESSO BRASILEIRO DE AGROMETEOROLOGIA, 16., 2009, Belo Horizonte. Mudanças climáticas, recursos hídricos e energia para uma agricultura sustentável. Belo Horizonte: SBA: UFV: CNPMS, 2009. 1 CD-ROM.
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