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

Black spot disease

Causal organism : Deightoniella torulosa

Symptoms

• The fungus causes complex symptoms. It causes black spot on leaves, black tip or black end and hand speckle on fruit and also causes rottening of leaves and pseudostem.
• Fruit speckling or spotting are the most common symptoms and which use reddish to black in colour with dark green halo around each spot
• Finger tip or black tip are associated with injury to the tip . Black discolouration appears just below the flower i.e. fruit tip