IRRI scoring schedule for sheath blight disease (Rhizoctonia solani) (0–9 scale).
|R||Lesions limited to below of the leaf|
|MR||Lesions limited to below of the leaves|
|MS||Lesions present in more than of the leaves|
|S||Lesions present in more than of the leaf surface. Severe infection in upper leaves (2 branches of withered leaves)|
|HS||Lesions reach the tiller. Severe infection on all leaves and some plants were killed.|
|Description: HS: highly susceptible; S: susceptible; MS: moderately susceptible; MR: moderately resistant; R: resistant; HR: highly resistant.|