Table 2.

IRRI scoring schedule for sheath blight disease (Rhizoctonia solani) (0–9 scale).

Types	Symptoms shown
HR	No changes
R	Lesions limited to below 1/4 of the leaf
MR	Lesions limited to below 1/2 of the leaves
MS	Lesions present in more than 1/2 of the leaves
S	Lesions present in more than 1/4 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.