Cornell: iPad app lets plant specialists assess disease severity

From Cornell: iPad app lets plant specialists assess disease severity. “Estimate relies on Standard Area Diagrams (SADs), a series of photographs of diseased leaves, with each photo containing a leaf incrementally more diseased than the previous one. Each SAD shows disease severity in terms of the percent of the leaf that is diseased. Users then examine a leaf in the field, for example, and compare and match it with SADs to estimate the disease severity.” The app is free.

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