ScaleHorsfallBarratt

percentAffected


Horsfall-Barratt Scale for Measuring Plant Disease


Implementation of the EPA's Ecological Exposure Research Division (EERD) tools (discontinued in 1999) for Probit and Trimmed Spearman-Karber Analysis.
Probit and Spearman-Karber methods from Finney's book "Probit analysis a statistical treatment of the sigmoid response curve" with options for most accurate results or identical results to the book.
Probit and all the tables from Finney's book (code-generated, not copied) with the generating functions included.
Control correction: Abbott, Schneider-Orelli, Henderson-Tilton, Sun-Shepard.
Toxicity scales: Horsfall-Barratt, Archer, Gauhl-Stover, Fullerton-Olsen, etc.

ScaleHorsfallBarratt: Horsfall-Barratt Scale for Measuring Plant Disease

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