Standard area diagrams for tomato early blight severity assessments on leaves and leaflets

Two standard area diagrams (SADs) were developed to quantify the severity of tomato early blight (EB), caused by Alternaria solani , on leaves and leaflets. The SADs were composed by sets of images with distinct EB severity for leaflets (0–40%) and leaves (0-46.4%). To validate the diagrams, 13 eval...

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Bibliographic Details
Published in:Australasian plant pathology 2024-05, Vol.53 (3), p.261-272
Main Authors: dos Anjos, Breno Benvindo, Lirio, Victor Côco, da Rocha, Matheus Ricardo, da Silva, Sophia Machado Ferreira, de Paiva Caetano Bucker Moraes, Simone, Belan, Leônidas Leoni, de Jesus Junior, Waldir Cintra, Moraes, Wanderson Bucker, da Silva Xavier, André, Alves, Fábio Ramos, Moraes, Willian Bucker
Format: Article
Language:English
Subjects:
Agriculture
Biomedical and Life Sciences
Blight
Correlation coefficient
Correlation coefficients
Early blight
Ecology
Entomology
Epidemiology
Estimates
Leaves
Life Sciences
Original Research Article
Performance evaluation
Plant diseases
Plant Pathology
Plant Sciences
Regression analysis
Reproducibility
Tomatoes
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Summary:Two standard area diagrams (SADs) were developed to quantify the severity of tomato early blight (EB), caused by Alternaria solani , on leaves and leaflets. The SADs were composed by sets of images with distinct EB severity for leaflets (0–40%) and leaves (0-46.4%). To validate the diagrams, 13 evaluators with no experience in quantifying the plant disease severity estimated EB severity by using a 50-image sample of tomato leaves and leaflets, first without SADs and then using the proposed SADs. The data were submitted to regression analysis and Lin’s concordance correlation coefficient, and the accuracy, precision, repeatability, and reproducibility of the estimates for EB severity were assessed. Based on the parameters of Lin’s coefficients and intraclass correlations, EB severity estimates were consistent and more reliable using SADs, improving evaluators’ performance. The diagrams proposed in this study improved the quantification of EB severity performed by 13 evaluators, increasing the accuracy, precision, and reliability of the estimates. Therefore, the proposed diagrams can be used in further studies on the epidemiology, resistance, and management strategies of this pathosystem.
ISSN:0815-3191
1448-6032
DOI:10.1007/s13313-024-00975-7