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Registro Completo |
Biblioteca(s): |
Embrapa Algodão; Embrapa Soja. |
Data corrente: |
10/01/2018 |
Data da última atualização: |
10/01/2018 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
TERAMOTO, A.; MEYER, M. C.; SUASSUNA, N. D.; CUNHA, M. G. da. |
Afiliação: |
UFG; MAURICIO CONRADO MEYER, CNPSO; NELSON DIAS SUASSUNA, CNPA; UFG. |
Título: |
In vitro sensitivity of Corynespora cassiicola isolated from soybean to fungicides and field chemical control of target spot. |
Ano de publicação: |
2017 |
Fonte/Imprenta: |
Summa Phytopathologica, Botucatu, v. 43, n. 4, p. 281-289, 2017. |
DOI: |
10.1590/0100-5405/2195 |
Idioma: |
Inglês |
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. |
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 |
Thesagro: |
Corynespora cassiicola; Fungicida; Fungo; Soja. |
Thesaurus Nal: |
Pesticide use reduction; Soybeans. |
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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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Biblioteca(s): |
Embrapa Rondônia. |
Data corrente: |
30/04/2015 |
Data da última atualização: |
13/04/2016 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
B - 3 |
Autoria: |
PASSOS, A. M. A. dos; REZENDE, P. M.; REIS, W. P.; BOTREL, E. P. |
Afiliação: |
ALEXANDRE MARTINS ABDAO DOS PASSOS, CPAF-RO; Pedro Milanez de Rezende, UFLA; Wagner Pere ira Reis, UFLA; Élberis Pereira Botrel, UFLA. |
Título: |
Cultivares de soja em sucessão ao trigo nos sistemas convencional e plantio direto. |
Ano de publicação: |
2015 |
Fonte/Imprenta: |
Revista Agrarian, Dourados, v . 8, n.27, p. 30 - 38 , 2015. |
Idioma: |
Português |
Conteúdo: |
O objetivo do trabalho foi avaliar, durante dois anos agrícolas, a produtividade e alguns atributos agronômicos de cultivares de soja em sistemas de cultivo (plantio direto e convencional) em sucessão à cultura de trigo irrigado na região de cerrado do Sul de Minas Gerais. Utilizou-se o delineamento estatístico de blocos ao acaso disposto em parcelas subdivididas, com três repetições, avaliando-se alguns atributos agronômicos de 15 cultivares de soja, semeadas no verão, nas subparcelas. As cultivares testadas, independentes dos anos agrícolas, influenciaram na produtividade de grãos e os atributos agronômicos altura de plantas e de inserção da primeira vagem. No primeiro ano, as cultivares DM 339 e a TMG 103RR apresentaram as maiores produtividades nos dois sistemas de cultivo. No sistema convencional, também sobressaíram-se as cultivares DM Nobre, Monsoy 6101, Conquista e Pintado. |
Palavras-Chave: |
Competição de cultivares; Cultivars competition; Savanna. |
Thesagro: |
Cerrado; Glycine Max; Manejo do Solo. |
Thesaurus NAL: |
soil management. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/123186/1/Passos-2015.pdf
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Marc: |
LEADER 01618naa a2200241 a 4500 001 2014727 005 2016-04-13 008 2015 bl uuuu u00u1 u #d 100 1 $aPASSOS, A. M. A. dos 245 $aCultivares de soja em sucessão ao trigo nos sistemas convencional e plantio direto.$h[electronic resource] 260 $c2015 520 $aO objetivo do trabalho foi avaliar, durante dois anos agrícolas, a produtividade e alguns atributos agronômicos de cultivares de soja em sistemas de cultivo (plantio direto e convencional) em sucessão à cultura de trigo irrigado na região de cerrado do Sul de Minas Gerais. Utilizou-se o delineamento estatístico de blocos ao acaso disposto em parcelas subdivididas, com três repetições, avaliando-se alguns atributos agronômicos de 15 cultivares de soja, semeadas no verão, nas subparcelas. As cultivares testadas, independentes dos anos agrícolas, influenciaram na produtividade de grãos e os atributos agronômicos altura de plantas e de inserção da primeira vagem. No primeiro ano, as cultivares DM 339 e a TMG 103RR apresentaram as maiores produtividades nos dois sistemas de cultivo. No sistema convencional, também sobressaíram-se as cultivares DM Nobre, Monsoy 6101, Conquista e Pintado. 650 $asoil management 650 $aCerrado 650 $aGlycine Max 650 $aManejo do Solo 653 $aCompetição de cultivares 653 $aCultivars competition 653 $aSavanna 700 1 $aREZENDE, P. M. 700 1 $aREIS, W. P. 700 1 $aBOTREL, E. P. 773 $tRevista Agrarian, Dourados, v . 8$gn.27, p. 30 - 38 , 2015.
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Embrapa Rondônia (CPAF-RO) |
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