Lesion type is the same as in scale 2, but a significant number of lesions are on the upper leaves 3 Typical blast lesions infecting 4-10% of the leaf area 5 entity acronym 6 Typical blast lesions infection 11-25% of the leaf area attribute method_of 2 Small roundish to slightly elongated, necrotic gray spots, about 1-2 mm in diameter, with a distinct brown margin. Lesions are mostly found on the lower leaves. variable_of More than 75% leaf area affected 9 Small brown specks of pin-point size or larger brown specks without sporulating center 1 8 Typical blast lesions infection 51-75% of the leaf area and many leaves are dead scale_of Typical susceptible blast lesions 3 mm or longer, infecting less than 4% of the leaf area 4 0 No lesions observed 7 Typical blast lesions infection 26-50% of the leaf area leaf blast damage scale