A-Z Index
Statewide
zzusis
WSU Home
WSU Extension
Hortsense
Hortsense Home
|
Hortsense fact sheets
| Tree Fruits
| Cherry
| Necrotic rusty mottle
Cherry
Disease
Armillaria root rot
Bacterial canker
Black knot
Brown rot blossom blight and fruit rot
Crown gall
Cytospora canker
Dead bud
Gumming (Gummosis)
Leaf spot
Little cherry
Mottle leaf
Necrotic rusty mottle
Powdery mildew
Prunus necrotic ringspot
Shothole (Coryneum blight)
Verticillium wilt
Witches'-broom (Cherry leaf curl)
Insect
Apple-and-thorn skeletonizer
Black cherry aphid
Brown marmorated stink bug
Cherry bark tortrix
Cherry fruit fly
Cutworms and armyworms
Earwigs
Leafrollers
Peachtree borer
Pear slug (Cherry slug)
San Jose scale
Shothole borer
Spider mites
Spotted wing Drosophila (SWD)
print version
|
pdf version
|
email url
Caption: Necrotic rusty mottle virus symptoms
Photo by: R.S. Byther
Cherry : Necrotic rusty mottle
(revision date: 5/20/2014)
Use Integrated Pest Management (IPM) for successful plant problem management.
Biology
Necrotic rusty mottle is believed to be caused by a virus. Affected trees are slower to leaf out and bloom in the spring. Terminal buds may be killed and the leaf and flower buds open irregularly. About a month after bloom, leaves begin to show angular purplish to brown spots. The spots may dry and drop out, giving leaves a tattered appearance. They can also coalesce and affect most of the leaf. Severely affected leaves develop a yellowish mottling along the veins and often drop. Defoliation can be severe. In the fall, remaining leaves turn mottled yellow and green, dropping prematurely. Decayed areas with gumming may be present on the bark. Twigs, larger branches, and whole trees may die. The necrotic rusty mottle virus is probably spread primarily by grafting with infected wood. 'Lambert' is severely affected, while 'Royal Ann' shows no symptoms.
Management Options
Non-Chemical Management
Plant and graft only with certified virus-free stock.
Remove and destroy infected 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
+ Show larger images
Caption: Necrotic rusty mottle virus symptoms
Photo by: R.S. Byther