Tea (Camellia sinensis)
Blister blight (Exobasidium vexans)
Symptoms
- The fungus affects only tender leaves and stems (pluckable shoots).
- Translucent spots occur in three to ten days and well developed lesions are seen in two weeks.
- Lesions are sunken on the upper surface and convex at lower surface.
- Affected leaves are distorted and irregularly rolled.
- Stem infection leads to goose-neck shape, dieback and snapping at the point of infection.
Chemical Control
| Sl.No | Generic Name | Trade Name | Color code | Dosage/litre | Recommendation | Remarks | |
|---|---|---|---|---|---|---|---|
| Dosage/acre (200 L) | Dosage/hectare (500 L) | ||||||
| 1 | Bitertanol 25 WP | Bayco | Blue | 2 g | 400 g | 1000 g | |
| 2 | Triadimefon 25 WP | Bayelton | Blue | 1 g | 200 g | 500 g | |
Extremely Toxic
Highly Toxic
Moderately Toxic
