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Production · Protection · Nutrients · Water
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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 leafDefoliationYellowing of leaves on shootsBrown streaking
Source

Written and published by Tamil Nadu Agricultural University, and reproduced here unchanged. The original is at https://agritech.tnau.ac.in/crop_protection/cocoa_4.html.

Images, PDFs and interactive tools on the original page were not captured — follow the source link for those.