| PWD Control Id | 22 |
| Crop ID | Niger Seed |
| Pwd Name | Alternaria leaf spot/blight |
| Pwd Type | Disease |
| Causal Agent | Alternaria sp. |
| Symptoms | The disease appears as concentric rings on the leaves, which turns brown with grey centre later on. As the disease advances, the spots become oval or circular and irregular in shape. The infected leaves become dry and lead to the defoliation. Further it, spreads to other plant parts and results in to premature drying of the plant. |
| Control | Use of resistant varieties. |
| Notes | NULL |
| Metadata Id | 8,629 |