Table 2.

BLS disease scoring scale and resistance categories for rice genotype evaluation

Scoring Scale	leaf area covered	Response
0	No infection.	No disease
1	Less than 1%	*HR
2	1–3%	R
3	4–5%	R
4	6–10%	MR
5	11–15%	MR
6	16–25%	MR
7	26–50%	S
8	51–75%	HS
9	76–100%	HS

*HR highly resistant, R resistant, MR moderately resistant, S susceptible, HS highly susceptible