Major Diseases of Fruits with their Pathogen / Causal organism

A wide range of different pathogens affect tree fruit and nut crop production. These crops are affected throughout the various regions they are cultivated, including temperate, sub-tropical and/or tropical areas of the world. Collectively, the pathogens of these crops account for considerable loss in yield (both pre- and post-harvest), and fruit and nut quality; some of the pathogens are responsible for producing mycotoxins, further reducing quality. Many of the pathogens are endemic, yet others are exotic, and their management is further associated with unique issues.

The broad range of pathogens may affect foliage, wood, flowers, roots and developing fruit or nuts. In most cases they include readily identifiable pathogenic agents, including fungal pathogens, bacteria and viruses, but also, relatively amorphous, less definable conditions including replant diseases.

Major Diseases of Fruits with their Pathogen/Causal organism


Stem-end rot

Die back

Soft rot

Powdery mildew

Sooty mould

Colletotrichum gloeosporioides

Botryodiplodia theobromae

Clletotrichum gloeosporioides

Erwinia carotovora

Oidium mangiferae

Caprodium mangiferae


Sigatoka leaf spot

Bunchy top


Fusaum oxysporum

Cercospora musae

Bunchy top virus/mycoplasma

Colletrotichum musae


Fruit rot


Leaf curl

Colletrotichum gloesoporioides

Botryodiplodia theobromae

Papaya mosaic virus

Papaya leaf curl virus

CoconutBud rot

Grey leaf spot

Phytophthora palmivora

Pestalotica palmarum



Gummosis/ stem bleeding

Die back

Xanthomonas campestris pv. citri

Elsinoe fawcetti

Phytophthora parasitica

Colletrotrichum goloesporioides


Die back/ wilt

Pestalotiopsis psidii

Fusarium oxysporum pv. pisidii

Jack fruitFruit rotRhizopus artocarpi
PineappleLeaf spot/ fruit rotCeratocystis paradoxes

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