Diseases of fruit plantation medicinal and aromatic crops (2+1)

Black spot of Banana

Causal organism: Phyllosticta musarum

Symptoms

• Minute black spots appear on leaves and fruits
• The spots are brown to dark brown initially
• Spots are abundant on the upper surface which are raised
• Leaf turns yellow in colour in advance stage of infection
• On fruits the pathogen is confined to the skin.

Spread

• PSI- The fungus produces pycnidium and pycnidiospores
• SSI- Spores are disseminated by wind
Management
• Spraying Copper oxychloride( 0.25%) or Bordeaux mixture (1%) on the plants