Diagramatic scale to quantification of severity of leaf spot in Eucalyptus globulus Labill. caused by Teratosphaeria nubilosa (Cooke) Crous & U. Braun

Detalhes bibliográficos
Autor(a) principal: Passador, Martha Maria
Data de Publicação: 2013
Outros Autores: Porcena, Alex Sander, Masson, Marcus Vinícius, Pieri, Cristiane D. de, Finkenauer, Élder, Furtado, Edson Luiz
Tipo de documento: Artigo
Idioma: por
Título da fonte: Repositório Institucional do INPA
Texto Completo: https://repositorio.inpa.gov.br/handle/1/16053
Resumo: The leaf spot (Mycosphaerella leaf disease = MLD) caused by Teratosphaeria nubilosa has caused damage in eucalypt plantations in southern and southeastern Brazil. The need to assess the disease in the field to evaluate of this damage, efficiency control, evaluation of germplasm induces to the necessity of having a visual scale for evaluation of disease. The objective was to develop a diagrammatic scale for young leaves and one for adult leaves of Eucalyptus globules for MLD. To do so, the leaves collected in the field were scanned for image analysis. The damaged area, the healthy leaf area and the external area of the same scale RGB (Red, Green, Blue) were determined. Subsequently, it was determinate the levels of severity depending on the sample distribution with seven levels for young leaves and six for adult leaves. For the visual acuity test and validate the scale, the leaves were evaluated for severity, with and without scale. With this proposed scales, the assessors showed good accuracy both for young and adult leaves with R2=0,98 and R2=0,80, respectively. The importance of the development of diagrammatic scales for assessing MLD in eucalyptus must to the fact that allows quantification of the symptoms accurately and precisely.
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spelling Passador, Martha MariaPorcena, Alex SanderMasson, Marcus ViníciusPieri, Cristiane D. deFinkenauer, ÉlderFurtado, Edson Luiz2020-05-22T20:04:33Z2020-05-22T20:04:33Z2013https://repositorio.inpa.gov.br/handle/1/16053The leaf spot (Mycosphaerella leaf disease = MLD) caused by Teratosphaeria nubilosa has caused damage in eucalypt plantations in southern and southeastern Brazil. The need to assess the disease in the field to evaluate of this damage, efficiency control, evaluation of germplasm induces to the necessity of having a visual scale for evaluation of disease. The objective was to develop a diagrammatic scale for young leaves and one for adult leaves of Eucalyptus globules for MLD. To do so, the leaves collected in the field were scanned for image analysis. The damaged area, the healthy leaf area and the external area of the same scale RGB (Red, Green, Blue) were determined. Subsequently, it was determinate the levels of severity depending on the sample distribution with seven levels for young leaves and six for adult leaves. For the visual acuity test and validate the scale, the leaves were evaluated for severity, with and without scale. With this proposed scales, the assessors showed good accuracy both for young and adult leaves with R2=0,98 and R2=0,80, respectively. The importance of the development of diagrammatic scales for assessing MLD in eucalyptus must to the fact that allows quantification of the symptoms accurately and precisely.Volume 23, Número 2, Pags. 523-530Attribution-NonCommercial-NoDerivs 3.0 Brazilhttp://creativecommons.org/licenses/by-nc-nd/3.0/br/info:eu-repo/semantics/openAccessDiagramatic scale to quantification of severity of leaf spot in Eucalyptus globulus Labill. caused by Teratosphaeria nubilosa (Cooke) Crous & U. BraunEscala diagramática para quantificação da severidade de manchas em folhas de Eucalyptus globulus Labill. causadas por Teratosphaeria nubilosa (Cooke) Crous & U. Brauninfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleCiência Florestalporreponame:Repositório Institucional do INPAinstname:Instituto Nacional de Pesquisas da Amazônia (INPA)instacron:INPAORIGINALartigo-inpa.pdfartigo-inpa.pdfapplication/pdf1181755https://repositorio.inpa.gov.br/bitstream/1/16053/1/artigo-inpa.pdfae6e010346ed9c52c47d248afa379567MD511/160532020-07-14 11:27:33.918oai:repositorio:1/16053Repositório de PublicaçõesPUBhttps://repositorio.inpa.gov.br/oai/requestopendoar:2020-07-14T15:27:33Repositório Institucional do INPA - Instituto Nacional de Pesquisas da Amazônia (INPA)false
dc.title.en.fl_str_mv Diagramatic scale to quantification of severity of leaf spot in Eucalyptus globulus Labill. caused by Teratosphaeria nubilosa (Cooke) Crous & U. Braun
dc.title.alternative.pt_BR.fl_str_mv Escala diagramática para quantificação da severidade de manchas em folhas de Eucalyptus globulus Labill. causadas por Teratosphaeria nubilosa (Cooke) Crous & U. Braun
title Diagramatic scale to quantification of severity of leaf spot in Eucalyptus globulus Labill. caused by Teratosphaeria nubilosa (Cooke) Crous & U. Braun
spellingShingle Diagramatic scale to quantification of severity of leaf spot in Eucalyptus globulus Labill. caused by Teratosphaeria nubilosa (Cooke) Crous & U. Braun
Passador, Martha Maria
title_short Diagramatic scale to quantification of severity of leaf spot in Eucalyptus globulus Labill. caused by Teratosphaeria nubilosa (Cooke) Crous & U. Braun
title_full Diagramatic scale to quantification of severity of leaf spot in Eucalyptus globulus Labill. caused by Teratosphaeria nubilosa (Cooke) Crous & U. Braun
title_fullStr Diagramatic scale to quantification of severity of leaf spot in Eucalyptus globulus Labill. caused by Teratosphaeria nubilosa (Cooke) Crous & U. Braun
title_full_unstemmed Diagramatic scale to quantification of severity of leaf spot in Eucalyptus globulus Labill. caused by Teratosphaeria nubilosa (Cooke) Crous & U. Braun
title_sort Diagramatic scale to quantification of severity of leaf spot in Eucalyptus globulus Labill. caused by Teratosphaeria nubilosa (Cooke) Crous & U. Braun
author Passador, Martha Maria
author_facet Passador, Martha Maria
Porcena, Alex Sander
Masson, Marcus Vinícius
Pieri, Cristiane D. de
Finkenauer, Élder
Furtado, Edson Luiz
author_role author
author2 Porcena, Alex Sander
Masson, Marcus Vinícius
Pieri, Cristiane D. de
Finkenauer, Élder
Furtado, Edson Luiz
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Passador, Martha Maria
Porcena, Alex Sander
Masson, Marcus Vinícius
Pieri, Cristiane D. de
Finkenauer, Élder
Furtado, Edson Luiz
description The leaf spot (Mycosphaerella leaf disease = MLD) caused by Teratosphaeria nubilosa has caused damage in eucalypt plantations in southern and southeastern Brazil. The need to assess the disease in the field to evaluate of this damage, efficiency control, evaluation of germplasm induces to the necessity of having a visual scale for evaluation of disease. The objective was to develop a diagrammatic scale for young leaves and one for adult leaves of Eucalyptus globules for MLD. To do so, the leaves collected in the field were scanned for image analysis. The damaged area, the healthy leaf area and the external area of the same scale RGB (Red, Green, Blue) were determined. Subsequently, it was determinate the levels of severity depending on the sample distribution with seven levels for young leaves and six for adult leaves. For the visual acuity test and validate the scale, the leaves were evaluated for severity, with and without scale. With this proposed scales, the assessors showed good accuracy both for young and adult leaves with R2=0,98 and R2=0,80, respectively. The importance of the development of diagrammatic scales for assessing MLD in eucalyptus must to the fact that allows quantification of the symptoms accurately and precisely.
publishDate 2013
dc.date.issued.fl_str_mv 2013
dc.date.accessioned.fl_str_mv 2020-05-22T20:04:33Z
dc.date.available.fl_str_mv 2020-05-22T20:04:33Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://repositorio.inpa.gov.br/handle/1/16053
url https://repositorio.inpa.gov.br/handle/1/16053
dc.language.iso.fl_str_mv por
language por
dc.relation.ispartof.pt_BR.fl_str_mv Volume 23, Número 2, Pags. 523-530
dc.rights.driver.fl_str_mv Attribution-NonCommercial-NoDerivs 3.0 Brazil
http://creativecommons.org/licenses/by-nc-nd/3.0/br/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution-NonCommercial-NoDerivs 3.0 Brazil
http://creativecommons.org/licenses/by-nc-nd/3.0/br/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Ciência Florestal
publisher.none.fl_str_mv Ciência Florestal
dc.source.none.fl_str_mv reponame:Repositório Institucional do INPA
instname:Instituto Nacional de Pesquisas da Amazônia (INPA)
instacron:INPA
instname_str Instituto Nacional de Pesquisas da Amazônia (INPA)
instacron_str INPA
institution INPA
reponame_str Repositório Institucional do INPA
collection Repositório Institucional do INPA
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