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Registro Completo
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
16/01/2019 |
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Data da última atualização: |
16/01/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Internacional - B |
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Autoria: |
ARAÚJO, E. R.; RESENDE, R. S.; KREZANOSKI, C. E.; DUARTE, H. S. S. |
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Título: |
A standard area diagram set for severity assessment of botrytis leaf blight of onion. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
European Journal of Plant Pathology, Amsterdan, v. 153, n. 1, p. 283-287, 2018. |
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Idioma: |
Inglês |
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Conteúdo: |
This work aimed to develop and validate a standard area diagram set (SADs) to estimate the severity of botrytis leaf blight of onion caused by Botrytis squamosa. For this purpose, a SADs with nine levels of severity (0.3; 1.0; 2.5; 5.0; 10; 20; 30; 40; and 57.7%) was developed from 193 symptomatic leaves collected in the field. The SADs was validated by 16 raters with no experience in evaluating plant diseases. Both precision and accuracy improved when they used the SADs. The statistical parameters for the 16 raters were: coefficient of bias - Cb (no SADs = 0.592, with SADs = 0.988); correlation coefficient ? r (no SADs = 0.864, with SADs = 0.921); and Lin?s concordance correlation coefficient ? ρc (no SADs = 0.513, with SADs = 0.909). In addition, estimates were more reliable: coefficient of determination - R2 (no SADs = 0.681, with SAD = 0.796); intra-class correlation coefficient - ρ (no SADs = 0.729, with SADs = 0.876). The SADs proposed here is a useful tool for improving visual assessments of severity of botrytis leaf blight of onion. |
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Palavras-Chave: |
Allium cepa; Botrytis squamosa; Disease assessment; Phytopathometry. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 01825naa a2200205 a 4500
001 1128242
005 2019-01-16
008 2018 bl uuuu u00u1 u #d
100 1 $aARAÚJO, E. R.
245 $aA standard area diagram set for severity assessment of botrytis leaf blight of onion.$h[electronic resource]
260 $c2018
520 $aThis work aimed to develop and validate a standard area diagram set (SADs) to estimate the severity of botrytis leaf blight of onion caused by Botrytis squamosa. For this purpose, a SADs with nine levels of severity (0.3; 1.0; 2.5; 5.0; 10; 20; 30; 40; and 57.7%) was developed from 193 symptomatic leaves collected in the field. The SADs was validated by 16 raters with no experience in evaluating plant diseases. Both precision and accuracy improved when they used the SADs. The statistical parameters for the 16 raters were: coefficient of bias - Cb (no SADs = 0.592, with SADs = 0.988); correlation coefficient ? r (no SADs = 0.864, with SADs = 0.921); and Lin?s concordance correlation coefficient ? ρc (no SADs = 0.513, with SADs = 0.909). In addition, estimates were more reliable: coefficient of determination - R2 (no SADs = 0.681, with SAD = 0.796); intra-class correlation coefficient - ρ (no SADs = 0.729, with SADs = 0.876). The SADs proposed here is a useful tool for improving visual assessments of severity of botrytis leaf blight of onion.
653 $aAllium cepa
653 $aBotrytis squamosa
653 $aDisease assessment
653 $aPhytopathometry
700 1 $aRESENDE, R. S.
700 1 $aKREZANOSKI, C. E.
700 1 $aDUARTE, H. S. S.
773 $tEuropean Journal of Plant Pathology, Amsterdan$gv. 153, n. 1, p. 283-287, 2018.
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