Biology Reference
In-Depth Information
susceptible. Seed treatment did not give satisfac-
tory control.
Fusarium sp.
Root Rot
of sweet peas, reported
as prevalent in Montana. Plants turn yellow when
in bloom with necrosis of vascular system which
leads to drying up of plant.
sassafras, maples and citrus. This fungus may be
an important facultative parasite on city shade
trees. The rot is white, spongy, with black spots
scattered throughout. The conks are annual, with
a reddish, shiny, lacquered upper surface and
a short, thick lateral stalk; common on logs,
stumps, standing or fallen trees.
Ganoderma zonatum
Butt Rot
of queen palms,
Florida.
Ganoderma zonatum On mesquite, in Texas.
Gaeumannomyces
Gaeumannomyces graminis var. graminis.
Blight
of centipede grass and Bermudagrass.
Root rot; of St. Augustinegrass. Leaf yellowing
and root mass reduction; of Zoysia.
Greeneria
Deuteromycetes, Coelomycetes
Ganoderma
Greeneria uvicola
Bitter Rot
of grape.
Basidiomycetes, Aphyllophorales
Gibberella
Differing from
Fomes
in having spores truncated
at one end and two-layered, the spines of the
brown endospore projecting into hyaline exo-
spore. Sporophore has a hard crust, formed by
a layer of thick-walled, elongated cells.
Ganoderma applanatum (Syn.
Fomes
applanatus
).
White Mottle Rot
, widely distrib-
uted on hardwoods, maple, beech, alder,
acacia, birch, horse-chestnut, hawthorn and hick-
ory, and sometimes on conifers. The rot is ordi-
narily on dead timber, but the fungus can attack
living trees through wounds and destroy heart-
wood for a few feet. In early stages the wood is
somewhat bleached, surrounded by a dark brown
band. This shelf fungus is called artists' conk
because the white undersurface immediately
turns brown when bruised and can be used
for writing or etching pictures. The upper
surface is smooth, zoned, gray or gray-black; up
to 2 feet wide.
Ganoderma
Blights
.
Gibberella zeae (Anamorph,
Fusarium
graminearum
).
Corn Root Rot
,
Stalk Rot
,
Ear
Rot
, also
Fusarium Head Blight
or
Scab
of
cereals and grasses. Corn is attacked at all ages,
with both roots and kernels rotted. Conidia are
pinkish in mass; black perithecia are numerous on
overwintered corn stalks and residues. Hybrid
corn with loose husks exposing the ear tip or
varieties with upright ears retaining water are
more apt to be infected. Rotation and clean
plowing aid in control.
▶
Gilbertella
Zygomycetes, Mucorales
Gilbertella persicaria
Fruit Rot
on peach.
Ganoderma
lucidum
). Perennial, with several layers of pores.
Ganoderma lucidum (formerly
Ganoderma
curtisii
). Perennial, with several layers of pores.
Ganoderma lucidum (Syn. Polyporus lucidus).
The varnish or lacquer fungus causes
Heart Rot
of eastern hardwoods and conifers, especially
hemlock, reported also on boxwood, hackberry,
curtisii (see
▶
Gloeosporium
Anthracnose
.
Colletotrichum
▶
gloeosporioides (formerly
Gloeosporium
foliicolum
).
(
Glomerella
cingulata
).
Fruit Rot
on citrus fruits.
