University of Hawaï
|Measured variables||color, surface, disease|
Leaf Doctor: A New Portable Application for Quantifying Plant Disease SeveritySarah J. Pethybridge, Scot C. NelsonPlant Disease, 2017 View paper
The Leaf Doctor is a free iPhone app for pathometry, the quantitative assessment of plant disease intensity. This interactive app allows users to collect or submit photographs of symptomatic plant organs (e.g., leaves) and measure the percentage of tissue area diseased. The assessment data and photographs may be sent by e-mail to any recipient.
Source: Leaf Doctor website