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Apple
Disease
Anthracnose and Bull's-eye rot
Bitter pit
Burrknot
Crown and collar rot
Crown gall
Cytospora canker
Fire blight
Fruit russeting
Nectria canker (European canker)
Nectria twig blight (Coral spot)
Perennial canker (Bull's-eye rot)
Phytophthora fruit rot
Powdery mildew
Scab
Virus diseases
Insect
Aphids
Apple ermine moth
Apple maggot
Apple-and-thorn skeletonizer
Brown marmorated stink bug
Codling moth
Cutworms and armyworms
Earwigs
Fruittree leafroller
Leafhoppers
Leafrollers
Lecanium scale
San Jose scale
Spider mites
Tent caterpillars
Tentiform leafminer
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Caption: Apple mosaic virus
Photo by: R.S. Byther
Apple : Virus diseases
(revision date: 5/20/2014)
Use Integrated Pest Management (IPM) for successful plant problem management.
Biology
Virus diseases of apples are rarely significant problems in home orchards. Symptoms are most commonly seen as bark disorders, leaf mottling, or misshapen fruit. One of the more common virus problems is apple mosaic. Apple mosaic virus is most commonly seen on older (heirloom) apple varieties. This disease causes creamy to yellow mottling, spotting, or vein yellowing visible mainly on the upper surface of leaves. Extremely sensitive varieties may lose leaves. Apple mosaic is transmitted by grafting or natural root grafts and spreads slowly.
Management Options
Non-Chemical Management
Do not perform grafts with wood from infected trees.
Remove and destroy severely affected trees, if desired.
Select non-chemical management options as your first choice!
Chemical Management
IMPORTANT:
Visit Home and Garden Fact Sheets for more information on using pesticides
None recommended
Images
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Caption: Apple mosaic virus
Photo by: R.S. Byther