Abstract
A group of 50 inexperienced scorers were asked to estimate –using standard reference photos – foliar injury induced by the gas pollutant ozone on the supersensitive indicator planttobacco (Nicotiana tabacum L.) cv. Bel-W3. Theaverage accuracy level was 56.1% (95.9% when theclasses nearest to the reality were also consideredcorrect) and the average repeatability was 65.4%. Theextreme classes were easily scored. Central classesproved to be more difficult to be evaluated: this maydepend on the fact that two leaves may have similaractual total injured area, but substantially differentnumbers and spatial distribution of the lesions. Insome cases we observed a prevalence of overestimationerrors in the high classes and underestimation in thelow classes: this is in contradiction with theWeber-Fechner law. It is noteworthy the very shorttime required by operators to score, regardless of the results.
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Lorenzini, G., Nali, C., Dota, M.R. et al. Visual Assessment of Foliar Injury Induced by Ozone on Indicator Tobacco Plants: A Data Quality Evaluation. Environ Monit Assess 62, 175–191 (2000). https://doi.org/10.1023/A:1006262603497
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DOI: https://doi.org/10.1023/A:1006262603497