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

Black spot

Causal organism: Phyllosticta citricarpa
Various types of symptoms are seen due to this disease. Early infection may result in the appearance like “Melanose”. Infection of immature fruits may also leads to “hard spot” or “limited spots” with a hallow centre. “Freckled sot” or “speckled blotch” is seen in fruits nearing maturity which develops further during storage. “Virulent spot” is observed late in the season when temperature goes high and which is characterized by irregular reddish sunken lesions.