Biology Reference
In-Depth Information
B
ACTERIAL
Black Streak. Pseudomonas syringae
pv. aptata, CA, OR, UT, WA.
B
ACTERIAL
Beech (Fagus)
Crown
Gall.
Agrobacterium
B
ROOMRAPE
. Conophilis americana; Epifagus
virginiana, beechdrops.
C
ANKER
, Beech BarkDisease. Nectria coccinea var.
faginata, associated with woolly beech scale,
destructive northern New England and NY,
OH; N. galligena,NewEngland,MI,NY,NC,
PA, WV; Cryptococcus fagesuiga, OH, VA.
C
ANKER
, Bleeding. Phytophthora cactorum.
MA, NY, RI.
C
ANKER
;D
IEBACK
. Cytospora spp.; Strumella
coryneoides, New England; Phomopsis sp.,
MI, NY, PA.
C
ANKER
, Felt Fungus. Septobasidium spp.;
S. cokeri, S. curtisii, FL, NC.
C
ANKER
, Perennial. Endothia gyrosa,NY.
L
EAF
S
POT
. Cercospora sp., NY; Gloeosporium
fagi, CT to WI; Microstroma sp., IL, NJ;
Phyllosticta faginea,MAtoWV.
M
ISTLETOE
. Phoradendron serotinum
(flavescens), occasional VT to IN and
southward.
N
ONPARASITIC
. Leaf Scorch, common in North-
east but cause unknown, associated with high
temperature and water deficiency.
Leaf Mottle, cause unknown, virus suspected,
CT, NJ, NY, PA.
P
OWDERY
M
ILDEW
. Microsphaera alni,MAto
AL, WI; Phyllactinia corylea, New England
to AL, IL, WI.
R
OT
, Heart, Butt, Wound. Fomes spp.;
Ganoderma applanatum; Poly-porus spp.;
Schizophyllum commune; Stereum spp.
R
OT
, Mushroom Root. Armillaria mellea, CT,
NJ, NY, OH.
R
OT
, Sapwood. Hericium spp.; Ustulina deusta.
R
OT
, Wood. Daedalea spp.; Daldinia spp.;
Lenzites betulina, widespread.
S
OOTY
M
OLD
. Scorias spongospora, MA to AL,
MO.
tumefaciens, occasional.
B
LIGHT
, Foliage. Thanatephorus cucumeris,
MN.
B
LIGHT
, Phytophthora. Phytophthora, IL.
B
LIGHT
, Southern. Sclerotium rolfsii, NC to FL,
AZ, CA, TX.
D
AMPING
-O
FF
. Pythium spp.; Rhizoctonia
solani, general.
D
ODDER
. Cuscuta spp., occasional when beets
follow legumes.
D
OWNY
M
ILDEW
. Peronospora schachtii, CA,
MN, NJ, NY, OR, WA.
L
EAF
S
POT
. Alternaria sp., general, secondary;
Gloeosporium betae, MS, MT; Ramularia
beticola, CA, OR, WA; Septoria betae, DE,
IN, MA, OH.
L
EAF
S
POT
; Blight. Cercospora beticola, general.
N
EMATODE
, Leaf and Stem. Ditylenchus dipsaci,
KS.
N
EMATODE
, Root Knot. Meloidogyne arenaria;
M. javanica; M. chitwoodi, Pacific NW; M.
hapla, Pacific NW; Sugar-beet, Heterodera
schachtii; Clover Cyst, H.
trifolii; Gall,
Nacobbis Batatiformis.
N
EMATODE
, Sheath. Hemicycliophora obtusa.
Sting, Belonolaimus gracilis; Stubby Root,
Trichodorus christiei; Lesion, Pratylenchus
penetrans.
N
ONPARASITIC
. Black Heart. Boron deficiency,
general; phosphorus deficiency, occasional.
Bronzing. Potassium deficiency occasional.
Chlorosis.
Alkalinity,
iron,
manganese
deficiency.
Girdle. Strangling constriction of tap root.
Tipburn. Black tips, from high nitrogen with low
light intensity.
P
OWDERY
M
ILDEW
. Erysiphe polygoni, CA, MI.
R
OT
, Black Heart. Phoma betae, general, occa-
sional as leaf spot.
R
OT
, Black Root. Aphanomyces cochlioides,
general.
R
OT
,Charcoal.Macrophomina phaseoli,CA.
R
OT
, Crown. Sclerotinia sclerotiorum, CT, IL.
R
OT
, Root. Phytophthora drechsleri, CA, CO,
ID;
Beet (Beta vulgaris)
B
ACTERIAL
,
symtomless.
Clavibacter
sepedonicum, ND.
P.
cryptogea, WY;
Physalospora
