Table 1 Disease severity scale of leaf spot (scored at weekly intervals)
Severity scale | Numerical rating | Description of symptom |
|---|---|---|
0 | 0 | No disease |
1–20 | 1 | Infection of the leaves with small spot lesions |
21–40 | 2 | Moderate infection of leaf with spot lesions spreading on the surface of the leaves |
41–60 | 3 | Severe infection of the leaves with leaf spot lesions almost found in all the leaflets |
61–80 | 4 | Very severe infection on all the leaves with spot lesions spreading in all the leaflets and coalescing |
81–100 | 5 | The entire plant is completely infected with all leaves having leaf spot disease, some of the leaves having holes and there is leaf tearing |