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Avocado
> Year-Round IPM Program > Monitor for Diseases > Common
Root Diseases
Avocado
Common Trunk and Root Diseases and Symptoms
On this page
- Armillaria root rot
- Avocado root rot
- Bacterial canker
- Black streak
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- Dothiorella canker
- Phytophthora canker and collar rot
- Sunblotch
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Names link to more information on identification
and management.
Click on photos to enlarge
Armillaria
root rot
Identification tip: Commonly
causes unhealthy looking foliage, leaf drop, dieback of upper
limbs, and mushrooms growing near trunks.
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Avocado
root rot
Identification tip: Symptoms
include unusually abundant small fruit, a sparse canopy of
drooping older leaves, and new shoots of small pale leaves. |
Bacterial
canker
Identification tip: Typically
causes liquid or pale dry ooze on bark. |
Black streak
Identification
tip: Causes
staining, powdery white exudate, and cankers on bark. |
Dothiorella canker and
Phytophthora canker and collar
rot
Identification tip: Often
cause very similar symptoms, including discolored or oozing
bark, unhealthy foliage, and declining or dead limbs. |
Identification tip: Cankered bark has many
causes, including abiotic
disorders, pathogens,
and vertebrates. |
Sunblotch
Identification tip: Symptoms
include discolored indentations on fruit, rectangular bark
cracking, and stunted tree growth.
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