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166. | | SOUZA, A. G. C. de; COTA, L. V.; SILVA, D. D. da; COSTA, R. V. da; LANZA, F. E. Quantificação de perdas na produção de grãos causadas pela antracnose foliar em diferentes genótipos de sorgo. In: CONGRESSO NACIONAL DE MILHO E SORGO, 30.; SIMPÓSIO SOBRE LEPDÓPTEROS COMUNS A MILHO, SOJA E ALGODÃO, 1., 2014, Salvador. Eficiência nas cadeias produtivas e o abastecimento global: resumos expandidos. Sete Lagoas: Associação Brasileira de Milho e Sorgo, 2014. 1 CD-ROM. Trabalho publicado também no 7º Seminário de Iniciação Científica PIBIC/BIC Júnior, 2014, Sete Lagoas. Biblioteca(s): Embrapa Milho e Sorgo. |
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170. | | DUARTE, E. S.; SOARES, M. A.; TEIXEIRA, G. D.; SILVA, P. G.; CASELA, C. R.; COSTA, R. V. da. Seleção de actinomicetos antagonistas para biocontrole de Colletotrichum sublienolum, agente causal da antracnose de sorgo. In: CONGRESSO NACIONAL DE MILHO E SORGO, 27.; SIMPOSIO BRASILEIRO SOBRE A LAGARTA-DO-CARTUCHO, SPODOPTERA FRUGIPERDA, 3.; WORKSHOP SOBRE MANEJO E ETIOLOGIA DA MANCHA BRANCA DO MILHO, 2008, Londrina. Agroenergia, produção de alimentos e mudanças climáticas: desafios para milho e sorgo: trabalhos e palestras. [Londrina]: IAPAR; [Sete Lagoas]: Embrapa Milho e Sorgo, 2008. 1 CD-ROM. Biblioteca(s): Embrapa Milho e Sorgo. |
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172. | | COSTA, R. V. da; COTA, L. V.; SILVA, D. D. da; MEIRELLES, W. F.; LANZA, F. E. Viabilidade técnica e econômica da aplicação de estrobilurinas em milho. Tropical Plant Pathology, Brasília, v. 37, n. 4, p. 246-254, 2012. Biblioteca(s): Embrapa Milho e Sorgo. |
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176. | | NEVES, J. F. das; QUEIROZ, V. A. V.; COSTA, R. V. da; GUIMARAES, L. J. M.; MENDES, F. F.; MIGUEL, R. de A. Atraso na colheita e incidência de teores de fumonisinas totais em grãos de milho. In: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA, 5., 2013, Sete Lagoas. [Trabalhos apresentados]. Sete Lagoas: Embrapa Milho e Sorgo, 2013. 1 CD-ROM. Biblioteca(s): Embrapa Milho e Sorgo. |
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178. | | ALVES, E. N. T. D.; VERDOLIN, A. L. G.; COSTA, R. V. da; COTA, L. V.; SILVA, D. D. da; SILVA, O. A. da. Alternativas de controle para redução de grãos ardidos na cultura do milho. In: CONGRESSO NACIONAL DE MILHO E SORGO, 29., 2012, Águas de Lindóia. Diversidade e inovações na era dos transgênicos: resumos expandidos. Campinas: Instituto Agronômico; Sete Lagoas: Associação Brasileira de Milho e Sorgo, 2012. p. 587-592. 1 CD-ROM. Biblioteca(s): Embrapa Milho e Sorgo. |
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179. | | ALVES, E. N. T. D.; VERDOLIN, A. L. G.; COSTA, R. V. da; COTA, L. V.; SILVA, D. D. da; SILVA, O. A. da. Alternativas de controle para redução de grãos ardidos na cultura do milho. In: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA, 5., 2013, Sete Lagoas. [Trabalhos apresentados]. Sete Lagoas: Embrapa Milho e Sorgo, 2013. 1 CD-ROM. Biblioteca(s): Embrapa Milho e Sorgo. |
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180. | | CARVALHO, D. de O.; POZZA, E. A.; CASELA, C. R.; COSTA, R. V. da; POZZA, A. A. A.; CARVALHO, C. O. Adubação nitrogenada e potássica na severidade da antracnose em dois cultivares de milho. Revista Ceres, Viçosa, v. 60, n. 3, p. 380-387, maio/jun. 2013. Biblioteca(s): Embrapa Milho e Sorgo. |
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Registro Completo
Biblioteca(s): |
Embrapa Milho e Sorgo. |
Data corrente: |
05/08/2010 |
Data da última atualização: |
04/06/2018 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 2 |
Autoria: |
CAPUCHO, A. S.; ZAMBOLIM, L.; DUARTE, H. S. S.; PARREIRA, D. F.; FERREIRA, P. A.; LANZA, F. E.; COSTA, R. V. da; CASELA, C. R.; COTA, L. V. |
Afiliação: |
ALEXANDRE SANDRI CAPUCHO, UFV; LAERCIO ZAMBOLIM, UFV; HENRIQUE DA SILVA SILVEIRA DUARTE, UFV; DOUGLAS FERREIRA PARREIRA, UFV; UFV; FABRICIO EUSTAQUIO LANZA, UFV; RODRIGO VERAS DA COSTA, CNPMS; CARLOS ROBERTO CASELA, Pesquisador Aposentado CNPMS; LUCIANO VIANA COTA, CNPMS. |
Título: |
Influence of leaf position that correspond to whole plant severity and diagrammatic scale for white spot of corn. |
Ano de publicação: |
2010 |
Fonte/Imprenta: |
Crop Protection, Surrey, v. 29, n. 9, p. 1015-1020, 2010. |
DOI: |
10.1016/j.cropro.2010.04.012 |
Idioma: |
Inglês |
Conteúdo: |
The main objective of this research is to determine the influence of leaf position on corn plants with white spot caused by Pantoea ananatis, which better represents the infection on the whole plant. A diagrammatic scale to quantify the severity of the disease was elaborated and validated. For scale elaboration, the minimal and maximal limits of the disease severity observed in the field were considered, and intermediate levels followed logarithmic increments according to the Weber?Fechner stimulation law. The scale has nine classes: 0.1, 1, 2, 4, 8, 16, 24, 32 and 64%. For scale evaluation, a severity evaluation for white spot was performed by 10 raters with no experience in disease evaluation. Initially, severity estimation was performed without a scale for 41 leaves with different levels of severity. Afterward, the same raters used the proposed diagrammatic scale. Through linear regression to compare the actual and estimate severity values, the raters? accuracy and precision were analyzed. Satisfactory accuracy and precision were achieved when estimation was performed with a diagrammatic scale. To determine the best leaf disease severity evaluation, correlation and regression analyses were performed with 25 plants of five genotypes, for a total of 284 leaves analyzed. Results analysis leads us to conclude that the severity of white spot on corn plants significantly correlates with the disease mean severity of leaves 0 and -1, i.e., a leaf of the corn ear and the one immediately below it. This scale provided good levels of accuracy and precision (a mean R2 of 94%), with errors concentrating around 10%. Raters presented increased reproducibility (R2 > 90% in 82% of cases) of severity estimates. The proposed diagrammatic scale is considered adequate to estimate the severity of white spot in corn for germplasm evaluations, for epidemiological studies and for evaluation of control strategies for this disease. MenosThe main objective of this research is to determine the influence of leaf position on corn plants with white spot caused by Pantoea ananatis, which better represents the infection on the whole plant. A diagrammatic scale to quantify the severity of the disease was elaborated and validated. For scale elaboration, the minimal and maximal limits of the disease severity observed in the field were considered, and intermediate levels followed logarithmic increments according to the Weber?Fechner stimulation law. The scale has nine classes: 0.1, 1, 2, 4, 8, 16, 24, 32 and 64%. For scale evaluation, a severity evaluation for white spot was performed by 10 raters with no experience in disease evaluation. Initially, severity estimation was performed without a scale for 41 leaves with different levels of severity. Afterward, the same raters used the proposed diagrammatic scale. Through linear regression to compare the actual and estimate severity values, the raters? accuracy and precision were analyzed. Satisfactory accuracy and precision were achieved when estimation was performed with a diagrammatic scale. To determine the best leaf disease severity evaluation, correlation and regression analyses were performed with 25 plants of five genotypes, for a total of 284 leaves analyzed. Results analysis leads us to conclude that the severity of white spot on corn plants significantly correlates with the disease mean severity of leaves 0 and -1, i.e., a leaf of the corn ear and the one immed... Mostrar Tudo |
Palavras-Chave: |
Assessment; Phytopatometry. |
Thesagro: |
Zea Mays. |
Thesaurus NAL: |
Pantoea ananatis. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02771naa a2200277 a 4500 001 1859316 005 2018-06-04 008 2010 bl uuuu u00u1 u #d 024 7 $a10.1016/j.cropro.2010.04.012$2DOI 100 1 $aCAPUCHO, A. S. 245 $aInfluence of leaf position that correspond to whole plant severity and diagrammatic scale for white spot of corn.$h[electronic resource] 260 $c2010 520 $aThe main objective of this research is to determine the influence of leaf position on corn plants with white spot caused by Pantoea ananatis, which better represents the infection on the whole plant. A diagrammatic scale to quantify the severity of the disease was elaborated and validated. For scale elaboration, the minimal and maximal limits of the disease severity observed in the field were considered, and intermediate levels followed logarithmic increments according to the Weber?Fechner stimulation law. The scale has nine classes: 0.1, 1, 2, 4, 8, 16, 24, 32 and 64%. For scale evaluation, a severity evaluation for white spot was performed by 10 raters with no experience in disease evaluation. Initially, severity estimation was performed without a scale for 41 leaves with different levels of severity. Afterward, the same raters used the proposed diagrammatic scale. Through linear regression to compare the actual and estimate severity values, the raters? accuracy and precision were analyzed. Satisfactory accuracy and precision were achieved when estimation was performed with a diagrammatic scale. To determine the best leaf disease severity evaluation, correlation and regression analyses were performed with 25 plants of five genotypes, for a total of 284 leaves analyzed. Results analysis leads us to conclude that the severity of white spot on corn plants significantly correlates with the disease mean severity of leaves 0 and -1, i.e., a leaf of the corn ear and the one immediately below it. This scale provided good levels of accuracy and precision (a mean R2 of 94%), with errors concentrating around 10%. Raters presented increased reproducibility (R2 > 90% in 82% of cases) of severity estimates. The proposed diagrammatic scale is considered adequate to estimate the severity of white spot in corn for germplasm evaluations, for epidemiological studies and for evaluation of control strategies for this disease. 650 $aPantoea ananatis 650 $aZea Mays 653 $aAssessment 653 $aPhytopatometry 700 1 $aZAMBOLIM, L. 700 1 $aDUARTE, H. S. S. 700 1 $aPARREIRA, D. F. 700 1 $aFERREIRA, P. A. 700 1 $aLANZA, F. E. 700 1 $aCOSTA, R. V. da 700 1 $aCASELA, C. R. 700 1 $aCOTA, L. V. 773 $tCrop Protection, Surrey$gv. 29, n. 9, p. 1015-1020, 2010.
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