TNAU Agritech Portal
Home | About Us | Success Stories | Farmers Association | Farmers' Innovation | Publications | Contact

Horticultural crops :: Plantation :: Cocoa
Black Pod rot: Phytophthora palmivora, P. megakarya, P. citrophthora and P. capsici

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.
Chocolate brown spots Fully covered brown spots Infected seeds

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:

http://hawaiiplantdisease.net/Miscellaneous-diseases.php
http://s3.amazonaws.com/plantvillage/images/pics/000/001/729/large/CIMG1524.JPG?1380810258

Home | About Us | Success Stories | Farmers Association | Farmers' Innovation | Publications | Contact Us

© 2015 TNAU. All Rights Reserved.