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Production · Protection · Nutrients · Water
In here

Symptoms

  • Infection appears as chocolate brown spot, which spreads rapidly and soon occupies the entire surface of the pod.
  • As the disease advances, a whitish growth of fungus consisting of fungal sporangia is produced over the affected pod surface. Ultimately, the affected pods turn brown to black.
  • The internal tissues as well as the beans become discolored as a result of infection.

Management

  • Periodically remove the infected pods.
  • Spray 1 per cent Bordeaux mixture with on set of monsoon and also frequent intervals.
  • Provide frequent drainage and regulate shade to increases aeration.
  • Pseudomonas fluorescens (Pf1) liquid formulations @ 0.5% as soil and foliar spray (3 times per year- June, October & February) was found to be effective in reducing the Cocoa Pod rot and Stem canker.

Image Source:

Chocolate brown spotsFully covered brown spotsInfected seeds
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_2.html.

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