Biology Reference
In-Depth Information
P
OWDERY
M
ILDEW
. Microsphaera alni, general,
especially in greenhouses; Erysiphe
polygoni, widely reported, sometimes con-
fused with
M. alni
.
R
OT
, Root. Aphanomyces euteiches, IN, MI, WI;
Fusarium solani f. sp. pisi, occasional to
prevalent under glass and outdoors;
Phymatotrichum omnivorum, TX,
Phytophthora cactorum, CT; Thielaviopsis
basicola, black rot, CT to OH, CO, FL, IL,
MS; Pacific Coast.
R
OT
; Stem Wilt. Sclerotinia sclerotiorum, MD,
PA.
V
IRUS
. Pea Mosaic; Tomato Spotted Wilt;
Sweet Pea Streak. A complex, components
not identified, perhaps in part bacterial.
W
ILT
. Verticillium sp., NY, NJ; Fusarium
oxysporum f. sp. vasinfectum, FL, NY.
Control aphids and thrips spreading mosaic
and spotted wilt.
Sweet-Olive (Osmanthus fragrans)
B
LACK
M
ILDEW
; Black Spot. Asterina sp., MS.
L
EAF
S
POT
. Gloeosporium oleae, MD.
R
OT
, Root. Armillaria mellea, CA; Clitocybe
tabescens, LA.
Sweet Pea and Perennial Pea
(Lathyrus)
A
NTHRACNOSE
; Blossom and Shoot Blight.
Glomerella cingulata, general except on
Pacific Coast.
B
ACTERIAL
Crown
Gall.
Agrobacterium
tumefaciens, NJ, VA.
B
ACTERIAL
Fasciation. Clavibacter fascians,
widespread.
B
ACTERIAL
Leaf Spot. Pseudomonas pisi,
IN, WI.
B
LIGHT
, Gray Mold. Botrytis cinerea, general.
B
LIGHT
,Southern.Sclerotium rolfsii, FL, TX.
D
AMPING
-O
FF
; Root and Stem Rot. Pythium spp.,
CA, CT, MD, MA, NJ, NY, NC; Rhizoctonia
solani, general.
D
ODDER
. Cuscuta indecora, TX.
D
OWNY
M
ILDEW
. Peronospora trifoliorum, FL.
L
EAF
S
POT
. Alternaria sp., secondary, MD, MA,
NJ, NY, PA, TX; Colletotrichum pisi, AL,
FL, GA, SC; Ascochyta sp., also stem spot,
CT, LA, MN, MO, WV, WI; A. lathyri, NJ;
Cercospora lathyrina, GA, OK; Isariopsis
griseola, CT; Mycosphaerella pinodes, also
stem spot, MN, WI; Ovularia sp., CA;
Phyllosticta orobella, TX; Ramularia sp.,
NY, MA, NJ, PA, TX, WA; R. deusta f. sp.
odorati, CA; Curvularia sp., CA.
M
OLD
, White. Erostrotheca multiformis
(
Cladosporium album
) CA, MA, NJ, NY,
PA, TX, WA, in greenhouses.
N
EMATODE
, Lesion. Pratylenchus pratensis, NJ,
NY.
N
EMATODE
, Root Knot. Meloidogyne
Sweet Potato (Ipomoea batatas)
B
ACTERIAL
Soft Rot.
Erwinia carotovora,
CT, SC.
B
LIGHT
, Leaf. Phyllosticta batatas, occasional
NJ to FL, TX, KS, usually in the South;
Choanephora cucurbitarum, FL, leaf mold.
B
LIGHT
, Southern; Cottony Rot. Sclerotium
rolfsii, general in South.
C
ANKER
, Stem. Fusarium solani, NC. L
EAF
S
POT
.
Alternaria sp., secondary, occasional to gen-
eral; Cercospora sp., FL, OK; Septoria batat
icola, Occasional NJ to AL, IA, TX.
L
EAF
S
POT
,
Blight.
Acremonium
crotocinigenum
(
ΒΌ
Cephalosporium
cinnamomeum
), CA, FL.
N
EMATODE
, Lance. Hoplolaimus coronatus;
Lesion, Pratylenchus sp.
N
EMATODE
, Root Knot. Meloidogyne incognita
and M. incognita-acrita.
N
EMATODE
, Stem, Bulb. Ditylenchus dipsaci,
causing brown ring, NJ.
N
EMATODE
, Sting. Belonolaimus gracilis.
N
EMATODE
, Stunt. Tylenchorhynchus claytoni.
spp., FL,
MA, NJ, NY, TX.
N
ONPARASITIC
. Bud Drop. Unbalanced nutrition,
low light intensity in greenhouses.
