Anthracnose: Gloeosporium psidii

Symptoms:

• The most characteristic symptoms appear during the rainy season as small pin-head sized spots on the unripe fruits.
• They gradually enlarge to form sunken and circular, dark brown to black spots.
• The infected area of the unripe fruits becomes harder and corky.
• Acervuli are formed on fruit stalks.
• The pathogen remains dormant for about three months in the young infected fruits.
• In moist weather, acervuli appear as black dots scattered throughout the dead parts of the twigs.
• The conidia are spread by wind or rain.

Initial symptom	Circular black spots	Corky fruit

Management:

• Spraying the trees with Bordeaux mixture 0.6 % or Copper oxychloride 0.2% before the onset of monsoon reduces the disease incidence.

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