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Registro Completo |
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Biblioteca(s): |
Embrapa Algodão; Embrapa Soja. |
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Data corrente: |
10/01/2018 |
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Data da última atualização: |
10/01/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
TERAMOTO, A.; MEYER, M. C.; SUASSUNA, N. D.; CUNHA, M. G. da. |
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Afiliação: |
UFG; MAURICIO CONRADO MEYER, CNPSO; NELSON DIAS SUASSUNA, CNPA; UFG. |
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Título: |
In vitro sensitivity of Corynespora cassiicola isolated from soybean to fungicides and field chemical control of target spot. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Summa Phytopathologica, Botucatu, v. 43, n. 4, p. 281-289, 2017. |
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DOI: |
10.1590/0100-5405/2195 |
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Idioma: |
Inglês |
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Notas: |
Título em português: Sensibilidade de Corynespora cassiicola isolado de soja a fungicidas in vitro e controle
químico de mancha-alvo da soja no campo. |
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Conteúdo: |
Soybean target spot (Corynespora cassiicola) has become an important disease in most soybean growing regions in Brazil. The sensitivity of 34 isolates of C. cassiicola to 11 fungicides was evaluated based on mycelial growth inhibition (boscalid, carbendazim, cyproconazole, fluopyram, fluxapyroxad, prothioconazole and thiophanate-methyl) or spore germination inhibition (azoxystrobin, picoxystrobin, pyraclostrobin and trifloxystrobin). In addition, the efficacy of five fungicides to control target spot was tested in four field trials carried out during three crop seasons: 2011/2012, 2012/2013 and 2013/2014. Fungal isolates were collected from soybean plants in several soybean growing areas in Brazil. The effective concentration of each fungicide to inhibit fungal growth or spore germination by 50% (EC50) was calculated for all isolates. Fluxapyroxad and prothioconazole provided the greatest mycelial growth inhibition and pyraclostrobin led to the lowest spore germination percentage, with the lowest EC50 values. At field experiments, cyproconazole and carbendazim showed target spot control ranging from 26% to 29%. On the other hand, fluxapyroxad and prothioconazole prevented an epidemic of the disease by 45% to 55%, respectively. In general, the efficacy of fungicides in the field reflected the in vitro sensitivity averages. Large sensitivity reduction was detected to benzimidazoles (MBC), indicating that this group of fungicides should no longer be used for target spot control. There was a negative and significant correlation (-0.265) between target spot severity and soybean yield. The pathogen showed variability in sensitivity to the fungicide groups carboxamides (SDHI), triazoles (DMI) and strobilurins (QoI), which denotes a high risk of selection for resistance. MenosSoybean target spot (Corynespora cassiicola) has become an important disease in most soybean growing regions in Brazil. The sensitivity of 34 isolates of C. cassiicola to 11 fungicides was evaluated based on mycelial growth inhibition (boscalid, carbendazim, cyproconazole, fluopyram, fluxapyroxad, prothioconazole and thiophanate-methyl) or spore germination inhibition (azoxystrobin, picoxystrobin, pyraclostrobin and trifloxystrobin). In addition, the efficacy of five fungicides to control target spot was tested in four field trials carried out during three crop seasons: 2011/2012, 2012/2013 and 2013/2014. Fungal isolates were collected from soybean plants in several soybean growing areas in Brazil. The effective concentration of each fungicide to inhibit fungal growth or spore germination by 50% (EC50) was calculated for all isolates. Fluxapyroxad and prothioconazole provided the greatest mycelial growth inhibition and pyraclostrobin led to the lowest spore germination percentage, with the lowest EC50 values. At field experiments, cyproconazole and carbendazim showed target spot control ranging from 26% to 29%. On the other hand, fluxapyroxad and prothioconazole prevented an epidemic of the disease by 45% to 55%, respectively. In general, the efficacy of fungicides in the field reflected the in vitro sensitivity averages. Large sensitivity reduction was detected to benzimidazoles (MBC), indicating that this group of fungicides should no longer be used for target spot control... Mostrar Tudo |
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Thesagro: |
Corynespora cassiicola; Fungicida; Fungo; Soja. |
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Thesaurus Nal: |
Pesticide use reduction; Soybeans. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/170804/1/Teramoto.pdf
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Marc: |
LEADER 02708naa a2200253 a 4500
001 2084970
005 2018-01-10
008 2017 bl uuuu u00u1 u #d
024 7 $a10.1590/0100-5405/2195$2DOI
100 1 $aTERAMOTO, A.
245 $aIn vitro sensitivity of Corynespora cassiicola isolated from soybean to fungicides and field chemical control of target spot.$h[electronic resource]
260 $c2017
500 $aTítulo em português: Sensibilidade de Corynespora cassiicola isolado de soja a fungicidas in vitro e controle químico de mancha-alvo da soja no campo.
520 $aSoybean target spot (Corynespora cassiicola) has become an important disease in most soybean growing regions in Brazil. The sensitivity of 34 isolates of C. cassiicola to 11 fungicides was evaluated based on mycelial growth inhibition (boscalid, carbendazim, cyproconazole, fluopyram, fluxapyroxad, prothioconazole and thiophanate-methyl) or spore germination inhibition (azoxystrobin, picoxystrobin, pyraclostrobin and trifloxystrobin). In addition, the efficacy of five fungicides to control target spot was tested in four field trials carried out during three crop seasons: 2011/2012, 2012/2013 and 2013/2014. Fungal isolates were collected from soybean plants in several soybean growing areas in Brazil. The effective concentration of each fungicide to inhibit fungal growth or spore germination by 50% (EC50) was calculated for all isolates. Fluxapyroxad and prothioconazole provided the greatest mycelial growth inhibition and pyraclostrobin led to the lowest spore germination percentage, with the lowest EC50 values. At field experiments, cyproconazole and carbendazim showed target spot control ranging from 26% to 29%. On the other hand, fluxapyroxad and prothioconazole prevented an epidemic of the disease by 45% to 55%, respectively. In general, the efficacy of fungicides in the field reflected the in vitro sensitivity averages. Large sensitivity reduction was detected to benzimidazoles (MBC), indicating that this group of fungicides should no longer be used for target spot control. There was a negative and significant correlation (-0.265) between target spot severity and soybean yield. The pathogen showed variability in sensitivity to the fungicide groups carboxamides (SDHI), triazoles (DMI) and strobilurins (QoI), which denotes a high risk of selection for resistance.
650 $aPesticide use reduction
650 $aSoybeans
650 $aCorynespora cassiicola
650 $aFungicida
650 $aFungo
650 $aSoja
700 1 $aMEYER, M. C.
700 1 $aSUASSUNA, N. D.
700 1 $aCUNHA, M. G. da
773 $tSumma Phytopathologica, Botucatu$gv. 43, n. 4, p. 281-289, 2017.
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Registro original: |
Embrapa Soja (CNPSO) |
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Cutter |
Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Ocidental. |
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Data corrente: |
06/01/1997 |
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Data da última atualização: |
15/04/2024 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
ARAÚJO, J. C. A. de; ARAÚJO, A. E.; GASPAROTTO, L.; SANTOS, A. F. dos. |
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Afiliação: |
JOSÉ CRISTINO ABREU DE ARAÚJO, CPAA; LUADIR GASPAROTTO, CPAA. |
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Título: |
Avaliação da resistência de clones de seringueira a mancha areolada (Thanatephorus cucumeris). |
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Ano de publicação: |
1992 |
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Fonte/Imprenta: |
Fitopatologia Brasileira, v. 17, n. 2, p. 200, ago. 1992. |
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Idioma: |
Português |
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Notas: |
Edição dos resumos do 25º Congresso Brasileiro de Fitopatologia, 1992. Resumo 287. |
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Conteúdo: |
Foram avaliados nove clones diplóides e seus respectivos poliplóides, cinco clones recomendados para enxertia de copa e seis outras espécies de seringueira. No período mais favorável a ocorrência de T. cucumeris (fevereiro a maio), avaliou-se a severidade da doença em lançamentos a partir do estágio C, de três plantas/parcela, determinado-se a % de área foliar lesionada. Os resultados de 1991/1992 indicaram que a doença foi mais severa nos clones IAN 873, IAN 6323, IAN 6486, IAN 7535, MDF 180, Fx 3925 e seus respectivos poliplóides, Px, PA 31, IAN 7388, IAN 6545, nas espécies H. camargoana, H. spruceana e H. camporum: moderada nos clones IAN 6158 e CNS AM 7704 e seus respectivos poliplóides; e baixa em F 4512 e nas espécies H. viridis, H. guianensis e H. guianensis var. marginata. |
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Palavras-Chave: |
Amazonas; Brasil; Fungal diseases; Resistance; Rubber tree; Species. |
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Thesagro: |
Doença; Espécie; Folha; Fungo; Hevea; Resistência; Seringueira; Thanatephorus Cucumeris. |
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Thesaurus NAL: |
leaves. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/180519/1/FitoB-pag-200.pdf
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Marc: |
LEADER 01769nam a2200337 a 4500
001 1667135
005 2024-04-15
008 1992 bl uuuu u00u1 u #d
100 1 $aARAÚJO, J. C. A. de
245 $aAvaliação da resistência de clones de seringueira a mancha areolada (Thanatephorus cucumeris).
260 $aFitopatologia Brasileira, v. 17, n. 2, p. 200, ago. 1992.$c1992
500 $aEdição dos resumos do 25º Congresso Brasileiro de Fitopatologia, 1992. Resumo 287.
520 $aForam avaliados nove clones diplóides e seus respectivos poliplóides, cinco clones recomendados para enxertia de copa e seis outras espécies de seringueira. No período mais favorável a ocorrência de T. cucumeris (fevereiro a maio), avaliou-se a severidade da doença em lançamentos a partir do estágio C, de três plantas/parcela, determinado-se a % de área foliar lesionada. Os resultados de 1991/1992 indicaram que a doença foi mais severa nos clones IAN 873, IAN 6323, IAN 6486, IAN 7535, MDF 180, Fx 3925 e seus respectivos poliplóides, Px, PA 31, IAN 7388, IAN 6545, nas espécies H. camargoana, H. spruceana e H. camporum: moderada nos clones IAN 6158 e CNS AM 7704 e seus respectivos poliplóides; e baixa em F 4512 e nas espécies H. viridis, H. guianensis e H. guianensis var. marginata.
650 $aleaves
650 $aDoença
650 $aEspécie
650 $aFolha
650 $aFungo
650 $aHevea
650 $aResistência
650 $aSeringueira
650 $aThanatephorus Cucumeris
653 $aAmazonas
653 $aBrasil
653 $aFungal diseases
653 $aResistance
653 $aRubber tree
653 $aSpecies
700 1 $aARAÚJO, A. E.
700 1 $aGASPAROTTO, L.
700 1 $aSANTOS, A. F. dos
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Registro original: |
Embrapa Amazônia Ocidental (CPAA) |
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