Symptoms
- The first indication of the disease is a characteristic yellowing of one or two leaves on the second or third flush behind the growing tip.
- Diseased leaves fall within a few days of turning yellow and the other leaves on the shoot show similar symptoms.
- When the infected shoot is split lengthwise there is always a characteristic brown streaking.
Management
- The disease can be controlled by disposing diseased branches and regular pruning of chupons on the trunk.
- Cocoa nurseries should not be located near the diseased area.
- Avoid getting seedlings from diseased tracts.
- Kerala Agriculture University has developed some VSD resistant and high yielding varieties CCRP-1 to CCRP-7.
Image Source:
| Yellow leaf | Defoliation | Yellowing of leaves on shoots | Brown streaking |