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Bitter rot: Glomerella cingulata

Bitter rot: Glomerella cingulata Symptom Faint, light brown discolouration beneath the skin develops. The discolouration expands in a cone shape. The circular, rough lesions become depressed. The lesions increased and covers entire areas of fruits. Diny black dots appear beneath the cuticle which gives rise to acervuli Pink masses of spores are found arranged in defined rings. Management Spray Mancozeb 0.25 % in field. Treatment with Mancozeb 0.25 % to check the disease in storage.

Symptom

  • Faint, light brown discolouration beneath the skin develops. The discolouration expands in a cone shape. The circular, rough lesions become depressed. The lesions increased and covers entire areas of fruits.
  • Diny black dots appear beneath the cuticle which gives rise to acervuli
  • Pink masses of spores are found arranged in defined rings.

Management

  • Spray Mancozeb 0.25 % in field.
  • Treatment with Mancozeb 0.25 % to check the disease in storage.
Source

Written and published by Tamil Nadu Agricultural University, and reproduced here unchanged. The original is at https://agritech.tnau.ac.in/crop_protection/apple_5.html.

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