Biology Reference
In-Depth Information
Calonectria
See
Cylindrocladium
under Blights.
Calonectria crotalariae
Basal Stem Rot
of
oleander.
Calonectria sp. (Anamorph,
Cylindrocladium
)
Crown and Collar Rot
on papaya.
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Catenularia
Deuteromycetes, Hyphomycetes
Hyphae dark; conidophores simple or sparingly
branched, with terminal chains of conidia; spores
dark, one-celled.
Catenularia fuliginea
Fruit Rot
of date.
Mycocentrospora
Deuteromycetes, Coelomycetes
Fig. 2
Storage Rot on Carrot
Spores hyaline, filiform, with long, whiplike taper-
ing beaks, several cross walls and a swordlike
appendage from basal cell; mycelium dark.
Centrospora acerina
Mycocentrospora
acerina
).
Black Crown Rot
of celery,
Storage
Rot
of carrot.
Mycocentrospora acerina (formerly
Centrospora acerina
).
Black Crown Rot
of cel-
ery,
Storage Rot
of carrot (see
Fig. 2
). On celery
the disease appears 7 or 8 weeks after stock has
been placed in cold storage with pale, ochraceous
lesions at the crown end, gradually turning black,
sometimes reddish. The fungus lives in the soil;
use infested fields for early celery to be marketed
without storage. The same species also causes
leaf spot of pansy.
(see
Cephalosporium gregatum (see
Phialophora
gregata
).
Brown Stem Rot
of soybean.
Phialophora gregata (formerly
Cephalosporium gregatum
).
Brown Stem Rot
of
soybean.
A vascular disease of major importance in
the Midwest, also present in Florida, North
Carolina and Virginia. It has been controlled
with a long rotation
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▶
5 years corn, 1 year
soybeans.
Ceratocystis
▶
Cankers and Diebacks
.
Ceratocystis fimbriata (
Endoconidiophora
fimbriata
)
Sweet Potato Black Rot
, found wher-
ever sweet potatoes are grown, most destructive
in storage but present also in seedbed and field.
Round, blackish spots extend into vascular ring
or deeper; sprouts are sickly with black cankers
Cephalosporium
Leaf Spots
.
Cephalosporium carpogenum
Fruit Rot
on
apple in storage, reported from Washington and
Pennsylvania.
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