Table 6 Scaling techniques for assessment of Stemphylium blight of lentil based on appearance of plant infection and leaf drop system6.
Rating | Scale | Description |
|---|---|---|
R | 1 | No infection or tiny non-spreading lessions |
R-MR | 2 | Few chlorotic lesions, leaf drying affecting ≤ 5% leaves |
MR | 3 | Expanding lesions on 6 to 15% of leaves turning necrotic |
MR-MS | 4 | 16 to 30% leaves infected and defoliation |
MS | 5 | 31 t0 45% leaves infected and defoliation |
MS-S | 6 | 46 to 60% leaves infected and defoliation |
S | 7 | 61 to 80% leaves infected and defoliation |
S-VS | 8 | 81 to 90% leaves infected, stem lesions and plant left with terminal leaves only |
VS | 9 | Whole plant death |
