Data/hora: 18/06/2024 14:40:09

Biblioteca(s): | Epagri-Sede.
Data corrente: | 23/03/2017
Data da última atualização: | 23/03/2017
Autoria: | PINZÓN, A. M.; MONTEIRO, F. P.; PACHECO, L. P.; ALVAREZ, G. A.; ALMEIDA, C. C.; PINTO, F. A. M. F.; MEDEIROS, F. H. V.; SOUZA, J. T.
Título: | Development and validation of a diagrammatic scale to assess the severity of black rot of crucifers in kale.
Ano de publicação: | 2016
Fonte/Imprenta: | In: CONGRESSO BRASILEIRO DE FITOPATOLOGIA, 49., 2016, Maceió. Resumos... Viçosa: Sociedade Brasileira de Fitopatologia, 2016.
Idioma: | Inglês

Conteúdo:

The black rot is the main disease of kale and its management is still a challenge in urban
agriculture. The aim of this study was to develop a diagrammatic scale to evaluate black rot
(Xanthomonas campestris p v. compestris) severity on kale (Brassica oleraceae var.
acephala) leaves. The diagrammatic scale was developed and validated with eight levels of
severity, ranging from 0.19 to 48.8%. More than 95% of the leaves collected from the field
showed severity levels ranging from 0.1 to 21% and 5% of the leaves showed severities
higher than 22%. The validation of the scale was performed by 10 inexperienced evaluators.
Without the scale, most evaluators overestimated disease severity, whereas the use of the
scale resulted in increased precision, accuracy, repeatability, and reproducibility of the
estimates. In conclusion, the proposed diagrammatic scale proved to be useful for
assessments of black rot severity in kale leaves. The scale may be of interest to researches
performing studies on epidemiology or breeding for resistance.

Palavras-Chave: | Brassica oleracea var acephala; Disease assessment; Disease severity; Leaf disease; Xanthomonas campestris pv campestris.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
URL: | http://intranetdoc.epagri.sc.gov.br/producao_tecnico_cientifica/DOC_38984.pdf
Registro original: | Epagri-Sede (Epagri-Sede)
Exemplares: | Epagri-Sede - (101080-1) - UPC - PL - DD -  -  -  - DIS