This document discusses three main diseases that affect jackfruit trees: 1. Rhizopus rot, caused by the fungus Rhizopus artocurpi, which produces black, rotten fruit with white fungal growth. It is managed by pruning, removing diseased fruit, and fungicide application. 2. Gummosis disease, where sap oozes from lesions on the tree in response to stress, managed by removing infected areas and applying copper fungicide. 3. Pink disease caused by the fungus Corticium Salmonicolor, which appears as a pink powder on young branches leading to defoliation and dieback, managed by pruning infected branches and applying fungicide paste to cuts.

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2. Topic Name
Disease of Jackfruit
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3. My Introduce
Rafiqul Islam (Rifat)
IUBAT University of
Bangladesh
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4. Introduction
• Jackfruit is a common fruit in our
country. Its scientific name is
Artocarpus heterophyllus.
The jackfruit also known as jack
tree, jakfruit, or sometimes
simply jack or jak.
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5. Main Disease of the Jackfruit
Rhizopus rot
Gummosis disease
Pink disease
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6. 1. Disease name : Rhizopus rot
Pathogen name :( Rhizopus artocurpi)
Symptom
At first, soft, watery, brown
spots develop on the flowers
and fruit.
Subsequently, a powdery,
fuzzy-looking mass of black
spores and white fungal
mycelia covers the jackfruit
surface.
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7. Continue
 The pathogen engulfs the young fruit,
resulting in the characteristic black, rotten,
shrunken, and sometimes mummified fruit
remains.
 Fruit symptoms can appear on the tree or
can develop on fruit that are in storage or
transit
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8. Causes
• Three species of plant-pathogenic
fungi of the genus Rhizopus can
cause this disease in the tropics:
Rhizopus oryzae, Rhizopus
artocarpi, and Rhizopus stolonifer.
• No jackfruit varieties are reported to
have significant resistance to the
disease.
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9. Management
• Prune the tree to encourage good
ventilation.
• Remove and destroy diseased fruit from
trees and the ground.
• Clean up decaying organic debris
around the tree.
• Control weeds around young trees.
• Keep ripe fruit from contact with the soil
or decaying organic material.
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10. Continue
• Ensure that water does not pond
around the tree’s root zone.
• Do not pack fruit with
symptoms.
• Can be spray Mancozeb fungicide
2.5g/L.
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11. 2. Disease name :Gummosis disease
Symptom
• It is understood as a
plant physiological
disease.
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12. Continue
• Gummosis is the formation of patches
of a gummy substance on the surface
of certain plants, particularly fruit
trees.
• This occurs when sap oozes from lesion
or cankers as a reaction to
outside stimuli such as adverse
weather conditions, infections, insect
problems, or mechanical damage. 12

13. Management
• First we have to sickling the
infected place then use
Bordeaux mixture on that
place.
• Copper fungicide can be use
also.
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14. 3. Disease Name :Pink disease
Pathogen name :Corticium Salmonicolor
Symptoms
• It is widespread in tropical and
subtropical areas.
• Disease appears as a pinkish
powdery coating on the stem.
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15. Continue
• Young woody branches of the
affected trees lose their leaves &
show die back symptoms. Pink
encrustation is seen on the lower
shaded side.
• Pink color represents profuse
conidial production of fungus.
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16. Management
• The affected branches should be
pruned and cut ends should be
pasted with Bordeaux paste or
Copper Oxychloride paste.
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17. Q
&
Ans
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18. Thank
you
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