Escala diagramática para quantificação da severidade de manchas em folhas de Eucalyptus globulus Labill. causadas por Teratosphaeria nubilosa (Cooke) Crous & U. Braun

Detalhes bibliográficos
Autor(a) principal: Passador, Martha Maria
Data de Publicação: 2013
Outros Autores: Porcena, Alex Sander [UNESP], Masson, Marcus Vinícius, de Pieri, Cristiane [UNESP], Finkenauer, Elder, Furtado, Edson Luiz [UNESP]
Tipo de documento: Artigo
Idioma: eng
por
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.5902/198050989296
http://hdl.handle.net/11449/75938
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 Escala diagramática para quantificação da severidade de manchas em folhas de Eucalyptus globulus Labill. causadas por Teratosphaeria nubilosa (Cooke) Crous & U. BraunDiagramatic scale to quantification of severity of leaf spot in Eucalyptus globulus Labill. caused by Teratosphaeria nubilosa (Cooke) Crous & U. BraunDisease evaluationEucalyptus globulusMycosphaerella leaf diseaseThe 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.Instituto Nacional de Pesquisas da Amazônia Avenida Ephigênio Salles MCT-INPA, CEP 69011-670, Manaus (AM)Universidade Estadual Paulista Departamento de Produção Vegetal, CEP 18610-307, Botucatu (SP)Complexo Industrial de Camaçari, Bahia, Rua Alfa, 1033, CEP 42810-290, Camaçari (BA)Universidade Estadual Paulista, CEP 18610-307, Botucatu (SP)Universidade Católica de Pelotas Pesquisadora do setor Florestal, Rua Gonçalves Chaves, 373, CEP 96010-000, Pelotas (RS)Departamento de Produção Vegetal e Departamento de Ciência Florestal Universidade Estadual Paulista, CEP 18610-307, Botucatu (SP)Universidade Estadual Paulista Departamento de Produção Vegetal, CEP 18610-307, Botucatu (SP)Universidade Estadual Paulista, CEP 18610-307, Botucatu (SP)Departamento de Produção Vegetal e Departamento de Ciência Florestal Universidade Estadual Paulista, CEP 18610-307, Botucatu (SP)Instituto Nacional de Pesquisas da Amazônia (INPA)Universidade Estadual Paulista (Unesp)Complexo Industrial de CamaçariPesquisadora do setor FlorestalPassador, Martha MariaPorcena, Alex Sander [UNESP]Masson, Marcus Viníciusde Pieri, Cristiane [UNESP]Finkenauer, ElderFurtado, Edson Luiz [UNESP]2014-05-27T11:29:55Z2014-05-27T11:29:55Z2013-07-09info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article523-530application/pdfhttp://dx.doi.org/10.5902/198050989296Ciencia Florestal, v. 23, n. 2, p. 523-530, 2013.0103-99541980-5098http://hdl.handle.net/11449/7593810.5902/198050989296WOS:0003212422000232-s2.0-848797379642-s2.0-84879737964.pdf38459894858333950000-0002-6924-835XScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengporCiência Florestal0.4360,4200,420info:eu-repo/semantics/openAccess2024-04-30T15:56:28Zoai:repositorio.unesp.br:11449/75938Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:22:40.529231Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.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
Diagramatic scale to quantification of severity of leaf spot in Eucalyptus globulus Labill. caused by Teratosphaeria nubilosa (Cooke) Crous & U. Braun
title Escala diagramática para quantificação da severidade de manchas em folhas de Eucalyptus globulus Labill. causadas por Teratosphaeria nubilosa (Cooke) Crous & U. Braun
spellingShingle Escala diagramática para quantificação da severidade de manchas em folhas de Eucalyptus globulus Labill. causadas por Teratosphaeria nubilosa (Cooke) Crous & U. Braun
Passador, Martha Maria
Disease evaluation
Eucalyptus globulus
Mycosphaerella leaf disease
title_short Escala diagramática para quantificação da severidade de manchas em folhas de Eucalyptus globulus Labill. causadas por Teratosphaeria nubilosa (Cooke) Crous & U. Braun
title_full Escala diagramática para quantificação da severidade de manchas em folhas de Eucalyptus globulus Labill. causadas por Teratosphaeria nubilosa (Cooke) Crous & U. Braun
title_fullStr Escala diagramática para quantificação da severidade de manchas em folhas de Eucalyptus globulus Labill. causadas por Teratosphaeria nubilosa (Cooke) Crous & U. Braun
title_full_unstemmed Escala diagramática para quantificação da severidade de manchas em folhas de Eucalyptus globulus Labill. causadas por Teratosphaeria nubilosa (Cooke) Crous & U. Braun
title_sort Escala diagramática para quantificação da severidade de manchas em folhas de Eucalyptus globulus Labill. causadas por Teratosphaeria nubilosa (Cooke) Crous & U. Braun
author Passador, Martha Maria
author_facet Passador, Martha Maria
Porcena, Alex Sander [UNESP]
Masson, Marcus Vinícius
de Pieri, Cristiane [UNESP]
Finkenauer, Elder
Furtado, Edson Luiz [UNESP]
author_role author
author2 Porcena, Alex Sander [UNESP]
Masson, Marcus Vinícius
de Pieri, Cristiane [UNESP]
Finkenauer, Elder
Furtado, Edson Luiz [UNESP]
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Instituto Nacional de Pesquisas da Amazônia (INPA)
Universidade Estadual Paulista (Unesp)
Complexo Industrial de Camaçari
Pesquisadora do setor Florestal
dc.contributor.author.fl_str_mv Passador, Martha Maria
Porcena, Alex Sander [UNESP]
Masson, Marcus Vinícius
de Pieri, Cristiane [UNESP]
Finkenauer, Elder
Furtado, Edson Luiz [UNESP]
dc.subject.por.fl_str_mv Disease evaluation
Eucalyptus globulus
Mycosphaerella leaf disease
topic Disease evaluation
Eucalyptus globulus
Mycosphaerella leaf disease
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.none.fl_str_mv 2013-07-09
2014-05-27T11:29:55Z
2014-05-27T11:29:55Z
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 http://dx.doi.org/10.5902/198050989296
Ciencia Florestal, v. 23, n. 2, p. 523-530, 2013.
0103-9954
1980-5098
http://hdl.handle.net/11449/75938
10.5902/198050989296
WOS:000321242200023
2-s2.0-84879737964
2-s2.0-84879737964.pdf
3845989485833395
0000-0002-6924-835X
url http://dx.doi.org/10.5902/198050989296
http://hdl.handle.net/11449/75938
identifier_str_mv Ciencia Florestal, v. 23, n. 2, p. 523-530, 2013.
0103-9954
1980-5098
10.5902/198050989296
WOS:000321242200023
2-s2.0-84879737964
2-s2.0-84879737964.pdf
3845989485833395
0000-0002-6924-835X
dc.language.iso.fl_str_mv eng
por
language eng
por
dc.relation.none.fl_str_mv Ciência Florestal
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dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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dc.format.none.fl_str_mv 523-530
application/pdf
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
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