Biology Reference
In-Depth Information
uneven or delayed in ripening; crop is reduced.
Branches are shortened, trees stunted. Transmis-
sion by grafting or budding with no insect vector
known, but the disease spreads from wild bitter
cherry to sweet cherry. Remove diseased trees.
Propagate with scions from virus-free trees.
Cherry Chlorosis
On Malaheb and chokecherry.
Cherry Freckle Fruit Disease
Cherry Necrotic Rusty Mottle
On sweet cherry.
On sweet cherry. Foliage and blossoms delayed
in spring; brown necrotic or rusty chlorotic spots,
often with shot holes and defoliation.
Cherry Green Ring Mottle
On sour cherry.
Cherry (Sour) Pink Fruit
Cherry Gummosis
Fruit bitter, pink; tree stunted; foliage pale.
On sour cherry. Dieback of terminal shoots,
excessive gumming of branches.
Cherry Pinto Leaf
Cherry Little Cherry
On sweet cherry. Chlorotic patterns of varying
size with disease tissue changing to bright yellow
or white. Transmission by budding.
On sweet and sour cherry; fruits are half-size.
Flowering cherry acts as a reservoir for the virus.
Cherry Rasp Leaf Nepovirus
Cherry Midleaf Necrosis
Transmitted by nematode
Xiphinema amerciana
.
Virus differs from other cherry diseases that
cause leaf enations.
Dark brown necrosis starting in midvein; heavy
leaf fall; trees small and less vigorous but fruit
normal. On sour cherry in Oregon.
Cherry Rasp Leaf Nepovirus
Cherry Mora
On sweet cherry, in Northwest. Enations, elon-
gated protuberances from underside of leaves
with depressed lighter areas on upper surface.
Abnormal delay of a month or more in ripening
fruit; leaves yellowish, small, rosetted, twisted on
fruit spurs. On sweet cherry, Oregon.
Cherry Ring Spot
¼
Prunus Necrotic
Cherry Mottle Leaf Trichovirus
Ringspot Ilarvirus
On sweet cherry in Northwest. Leaves show chlo-
rotic mottling, are puckered, wrinkled, distorted
but not perforated. Fruit is small, hard, insipid,
On sour cherry, sweet cherry (tatter leaf), peach,
plum, prune, widespread in Northeast. Chlorotic
or necrotic rings and spots on leaves, with
