Escala diagramática para quantificação da severidade de manchas em folhas de Eucalyptus globulus Labill. causadas por Teratosphaeria nubilosa (Cooke) Crous & U. Braun
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , , |
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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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 0.436 0,420 0,420 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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) |
repository.mail.fl_str_mv |
|
_version_ |
1808128801888010240 |