Biology Reference
In-Depth Information
Fig. 3
Verticillium wilt on potato
Control
Sometimes it is possible to prune out an
infected maple and still save the tree, but often
the dying tree must be taken out. Neither maple
nor elm should be replanted in the same spot. Do
not transfer plants from areas where wilt has
appeared. Do not set raspberries following pota-
toes or tomatoes; do not use tomatoes after egg-
plant or potatoes without a long rotation. Proper
fertilization and adequate watering may help
trees to recover from wilt.
Verticillum dahliae is considered by some
a synonym of
V. albo-atrum
and by others as
a distinct species; reported as causing wilt of
dahlias, mint, marigold, ice plant, barley, wheat,
Fig. 4
Verticillium wilt on snapdragon
oat, potato, Leucospermum, impatiens, giant hys-
sop, globe artichoke, ash, cabbage, Cineraria and
Echinacea, and other plants. This form has
microsclerotia and grows on agar at slightly
higher temperatures.
Verticillium fungicola
Dry Bubble
of oyster
mushroom. Infection of sporophores at pin or
button stage cause development of typical dry
bubbles; mature sporophores show cracking and
curling of tissues, and depressed, brown, necrotic
areas.
