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 | Acesso ao texto completo restrito à biblioteca da Embrapa Milho e Sorgo. Para informações adicionais entre em contato com cnpms.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
29/11/2001 |
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Data da última atualização: |
07/06/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PACCOLA-MEIRELLES, L.D.; FERREIRA, A. S.; MEIRELLES, W. F.; MARRIEL, I. E.; CASELA, C. R. |
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Afiliação: |
WALTER FERNANDES MEIRELLES, CNPMS; IVANILDO EVODIO MARRIEL, CNPMS. |
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Título: |
Detection of a bacterium associated with a leaf spot disease of maize in Brazil. |
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Ano de publicação: |
2001 |
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Fonte/Imprenta: |
Journal of Phytopathology, Berlin, v. 149, p. 275-279, 2001. |
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Idioma: |
Português |
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Conteúdo: |
A leaf spot disease of maize occuring in Brazil in the 1980s was described as being caused by the ascomycete Phaeosphaeria maydis (P. Henn) Rane. Payak and Renfro (imperfect from Phyllosticta sp.). Disease symptoms were dark-green water-soaked spots that later became necrotic lesions. There are no reports at present in the literature of re-infection by the fungus under controlled conditions, casting doubt on the drue identity of the pathogen. In this study, cytological analyses of lesions at the initial stages did not detect the presence of fungal structures. Bacterial colonies with yellow pigmentation were isolated from the lesions, which reacted positively in hypersensitivity tests in tobacco plants. Maize plants were inoculated with the isolated bacteria. After 72 h incubation in a dew chamber, plants were transferred to a greenhouse, where they remained until evaluation. Typical symptoms of the disease were observed 5-7 days after inoculation of plants, only on treatments inoculated with the bacteria. The bacterium was re-isolated, which suggests its involvement in the initial phases of disease. The bacterium was identified as Pantoea ananas (synonym Erwinia ananas). |
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Palavras-Chave: |
Erwinia ananas; Maize; Pantoea ananas. |
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Thesagro: |
Milho; Phaeosphaeria Maydis. |
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Thesaurus Nal: |
Phyllosticta. |
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Categoria do assunto: |
H Saúde e Patologia |
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Marc: |
LEADER 01884naa a2200241 a 4500
001 1485166
005 2018-06-07
008 2001 bl uuuu u00u1 u #d
100 1 $aPACCOLA-MEIRELLES, L.D.
245 $aDetection of a bacterium associated with a leaf spot disease of maize in Brazil.$h[electronic resource]
260 $c2001
520 $aA leaf spot disease of maize occuring in Brazil in the 1980s was described as being caused by the ascomycete Phaeosphaeria maydis (P. Henn) Rane. Payak and Renfro (imperfect from Phyllosticta sp.). Disease symptoms were dark-green water-soaked spots that later became necrotic lesions. There are no reports at present in the literature of re-infection by the fungus under controlled conditions, casting doubt on the drue identity of the pathogen. In this study, cytological analyses of lesions at the initial stages did not detect the presence of fungal structures. Bacterial colonies with yellow pigmentation were isolated from the lesions, which reacted positively in hypersensitivity tests in tobacco plants. Maize plants were inoculated with the isolated bacteria. After 72 h incubation in a dew chamber, plants were transferred to a greenhouse, where they remained until evaluation. Typical symptoms of the disease were observed 5-7 days after inoculation of plants, only on treatments inoculated with the bacteria. The bacterium was re-isolated, which suggests its involvement in the initial phases of disease. The bacterium was identified as Pantoea ananas (synonym Erwinia ananas).
650 $aPhyllosticta
650 $aMilho
650 $aPhaeosphaeria Maydis
653 $aErwinia ananas
653 $aMaize
653 $aPantoea ananas
700 1 $aFERREIRA, A. S.
700 1 $aMEIRELLES, W. F.
700 1 $aMARRIEL, I. E.
700 1 $aCASELA, C. R.
773 $tJournal of Phytopathology, Berlin$gv. 149, p. 275-279, 2001.
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Embrapa Milho e Sorgo (CNPMS) |
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Registro Completo
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Biblioteca(s): |
Embrapa Agrossilvipastoril. |
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Data corrente: |
05/02/2020 |
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Data da última atualização: |
05/02/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
BARRO, J. P.; MEYER, M. C.; GODOY, C. V.; DIAS, A. R.; UTIAMADA, C. M.; JACCOUD FILHO, D. de S.; WRUCK, D. S. M.; BORGES, E. P.; SIQUERI, F.; JULIATTI, F. C.; CAMPOS, H. D.; NUNES JUNIOR, J.; CARNEIRO, L. C.; SILVA, L. H. C. P. da; MARTINS, M. C.; BALARDIN, R. S.; ZITO, R. K.; FURLAN, S. H.; VENANCIO, W. S; DEL PONTE, E. M. |
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Afiliação: |
JHONATAN P. BARRO, Universidade Federal de Voçosa, Viçosa, MG; MAURICIO CONRADO MEYER, CNPSO; CLAUDIA VIEIRA GODOY, CNPSO; ALFREDO R. DIAS, Fundação Chapadão, Chapadão do Sul, MS; CARLOS M. UTIAMADA, TAGRO, Londrina, PR; DAVID DE S. JACCOUD FILHO, UEPG, Ponta Grossa, PR; DULANDULA SILVA MIGUEL WRUCK, CPAMT; EDSON P. BORGES, Fundação Chapadão, Chapadão do Sul, MS; FABIANO SIQUERI, Fundação Mato Grosso, Rondonópolis, MT.; FERNANDO C. JULIATTI, Universidade Federal de Uberlândia, Uberlândia, MG.; HERCULES D. CAMPOS, Universidade de Rio Verde, Rio Verde, GO.; JOSE NUNES JUNIOR, Centro Tecnológico para Pesquisas Agropecuárias,Goiânia, GO; LUCIANA C. CARNEIRO, Universidade Federal de Goiás, Jataí , GO.; LUIS H. C. P. DA SILVA, AgroCarregal, Rio Verde, GO.; MONICA C. MARTINS, Círculo Verde Assessoria Agronômica e Pesquisa, Luís Eduardo Magalhães, BA.; RICARDO S. BALARDIN, Universidade Federal de Santa Maria, Santa Maria, RS.; ROBERTO KAZUHIKO ZITO, CNPSO; SILVANIA H. FURLAN, Instituto Biológico, São Paulo, SP.; WILSON S. VENANCIO, CWR Pesquisa Agrícola, Ponta Grossa, PR.; EMERSON MEDEIROS DEL PONTE, Universidade Federal de Viçosa, Viçosa, MG. |
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Título: |
Performance and Profitability of Fungicides for Managing Soybean White Mold:A 10-Year Summary of Cooperative Trials |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Plant Disease, v. 103, n. 9, p. 2212-2220, 2019. |
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ISSN: |
0191-2917 |
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Idioma: |
Inglês |
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Conteúdo: |
White mold, caused by Sclerotinia sclerotiorum, is a yield-limiting disease of soybean in Brazil. Uniform fungicide trials have been conducted annually since 2009. Data from 74 cooperative field trials conducted over a 10-year period were assembled. We selected five fungicides applied two times around flowering: dimoxystrobin plus boscalid (DIMO+BOSC), carbendazim plus procymidone (CARB+PROC), fluazinam (FLUZ), fluopyram (FLUO), and procymidone (PROC). For comparison, thiophanate-methyl (TMET) applied four times was also included as a low-cost treatment. Network models were fitted to the log of white mold incidence (percentages) and log of sclerotia mass data (grams/hectare) and to the nontransformed yield data (kilograms/hectare) for each treatment, including the untreated check. Back-transformation of the meta-analytic estimates indicated that the lowest and highest mean (95% confidence interval [CI]) percent reductions in incidence and sclerotia mass were 54.2 (49.3 to 58.7) and 51.6% (43.7 to 58.3) for TMET and 83.8 (79.1 to 87.5) and 87% (81.9 to 91.6) for CARB+PROC, respectively. The overall mean (95% CI) yield responses ranged from 323 kg/ha (247.4 to 400.3) for TMET to 626 kg/ha (521.7 to 731.7) for DIMO+BOSC, but the variance was significantly reduced by a binary variable (30% threshold) describing disease incidence in the untreated check. On average, an increment of 352 kg/ha was estimated for trials where the incidence was >30% compared with the low-disease scenario. Hence, the probability of breaking even on fungicide costs for the high-disease scenario was >65% for the more effective, but more expensive fungicide (FLUZ) than TMET. For the low-disease scenario, profitability was less likely and depended more on variations in fungicide cost and soybean price. MenosWhite mold, caused by Sclerotinia sclerotiorum, is a yield-limiting disease of soybean in Brazil. Uniform fungicide trials have been conducted annually since 2009. Data from 74 cooperative field trials conducted over a 10-year period were assembled. We selected five fungicides applied two times around flowering: dimoxystrobin plus boscalid (DIMO+BOSC), carbendazim plus procymidone (CARB+PROC), fluazinam (FLUZ), fluopyram (FLUO), and procymidone (PROC). For comparison, thiophanate-methyl (TMET) applied four times was also included as a low-cost treatment. Network models were fitted to the log of white mold incidence (percentages) and log of sclerotia mass data (grams/hectare) and to the nontransformed yield data (kilograms/hectare) for each treatment, including the untreated check. Back-transformation of the meta-analytic estimates indicated that the lowest and highest mean (95% confidence interval [CI]) percent reductions in incidence and sclerotia mass were 54.2 (49.3 to 58.7) and 51.6% (43.7 to 58.3) for TMET and 83.8 (79.1 to 87.5) and 87% (81.9 to 91.6) for CARB+PROC, respectively. The overall mean (95% CI) yield responses ranged from 323 kg/ha (247.4 to 400.3) for TMET to 626 kg/ha (521.7 to 731.7) for DIMO+BOSC, but the variance was significantly reduced by a binary variable (30% threshold) describing disease incidence in the untreated check. On average, an increment of 352 kg/ha was estimated for trials where the incidence was >30% compared with the low-disease scenar... Mostrar Tudo |
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Thesagro: |
Colheita; Controle Químico; Impacto Econômico. |
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Thesaurus NAL: |
Chemical control; Disease control; Economic impact; Field crops; Fungi; Legumes; Oilseeds; Yields. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 03151naa a2200493 a 4500
001 2119868
005 2020-02-05
008 2019 bl uuuu u00u1 u #d
022 $a0191-2917
100 1 $aBARRO, J. P.
245 $aPerformance and Profitability of Fungicides for Managing Soybean White Mold$bA 10-Year Summary of Cooperative Trials$h[electronic resource]
260 $c2019
520 $aWhite mold, caused by Sclerotinia sclerotiorum, is a yield-limiting disease of soybean in Brazil. Uniform fungicide trials have been conducted annually since 2009. Data from 74 cooperative field trials conducted over a 10-year period were assembled. We selected five fungicides applied two times around flowering: dimoxystrobin plus boscalid (DIMO+BOSC), carbendazim plus procymidone (CARB+PROC), fluazinam (FLUZ), fluopyram (FLUO), and procymidone (PROC). For comparison, thiophanate-methyl (TMET) applied four times was also included as a low-cost treatment. Network models were fitted to the log of white mold incidence (percentages) and log of sclerotia mass data (grams/hectare) and to the nontransformed yield data (kilograms/hectare) for each treatment, including the untreated check. Back-transformation of the meta-analytic estimates indicated that the lowest and highest mean (95% confidence interval [CI]) percent reductions in incidence and sclerotia mass were 54.2 (49.3 to 58.7) and 51.6% (43.7 to 58.3) for TMET and 83.8 (79.1 to 87.5) and 87% (81.9 to 91.6) for CARB+PROC, respectively. The overall mean (95% CI) yield responses ranged from 323 kg/ha (247.4 to 400.3) for TMET to 626 kg/ha (521.7 to 731.7) for DIMO+BOSC, but the variance was significantly reduced by a binary variable (30% threshold) describing disease incidence in the untreated check. On average, an increment of 352 kg/ha was estimated for trials where the incidence was >30% compared with the low-disease scenario. Hence, the probability of breaking even on fungicide costs for the high-disease scenario was >65% for the more effective, but more expensive fungicide (FLUZ) than TMET. For the low-disease scenario, profitability was less likely and depended more on variations in fungicide cost and soybean price.
650 $aChemical control
650 $aDisease control
650 $aEconomic impact
650 $aField crops
650 $aFungi
650 $aLegumes
650 $aOilseeds
650 $aYields
650 $aColheita
650 $aControle Químico
650 $aImpacto Econômico
700 1 $aMEYER, M. C.
700 1 $aGODOY, C. V.
700 1 $aDIAS, A. R.
700 1 $aUTIAMADA, C. M.
700 1 $aJACCOUD FILHO, D. de S.
700 1 $aWRUCK, D. S. M.
700 1 $aBORGES, E. P.
700 1 $aSIQUERI, F.
700 1 $aJULIATTI, F. C.
700 1 $aCAMPOS, H. D.
700 1 $aNUNES JUNIOR, J.
700 1 $aCARNEIRO, L. C.
700 1 $aSILVA, L. H. C. P. da
700 1 $aMARTINS, M. C.
700 1 $aBALARDIN, R. S.
700 1 $aZITO, R. K.
700 1 $aFURLAN, S. H.
700 1 $aVENANCIO, W. S
700 1 $aDEL PONTE, E. M.
773 $tPlant Disease$gv. 103, n. 9, p. 2212-2220, 2019.
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