Table 1 Categorization of infested Parthenium hysterophorus individuals based on the severity of infestation by winter rust
SN | Severity class | Description of severity class |
|---|---|---|
1 | No | Healthy plant with no infestation |
2 | Very low | Only a few leaves infested without any apparent impact on growth |
3 | Low | Premature senescence of some leaves but not apparent impact on inflorescence |
4 | Medium | Death of about 50% of leaves with apparent impacts on inflorescence but not senescence of plant |
5 | High | Death or senescence of plant |