Host Plants - Westcott's Plant Disease - page 658

C ANKER . Nectria galligena, CT; Strumella
coryneoidea, northern Appalachians;
Botryosphaeria ribis, IL; Fusarium solani,
LA.
C ANKER , Felt Fungus. Septobasidium spp., NJ to
Gulf states.
L EAF S POT . Actinopelte dryina, AL, IL, OK;
Cercospora nyssae, TX; Mycosphaerella
nyssaecola, MA to GA, MI; Phyllosticta
nyssae, southeastern states to TX.
M ISTLETOE .

C LUB R OOT . Plasmodiophora brassicicola,ME
to NC, CA, CO, MN, TX, WA.
D AMPING -O FF . Pythium ultimum, WI; Rhizocto-
nia solani, also root, stem and storage rot,
general.
D OWNY M ILDEW . Peronospora parasitica,MAto
FL, IL, TX.
L EAF S POT . Alternaria brassicae, gray leaf spot,
general; A. oleracea, black leaf spot, CT, FL,
MD, MA, NJ, NC, TX; Alternaria raphani,
AZ; Cercospora brassicicola, AL, FL, GA,
MS; Mycosphaerella brassicicola, ring spot,
OR; Phyllosticta sp., TX, WV; Ramularia
sp., AL, FL, WA; Septomyxa affine, AL.
L EAF S POT ; White Spot. Cercosporella
brassicae, MA to FL, IN, OR, TX;
Pseudocercosporella capsellae, CA.
M OLD , Seed. Alternaria tenuis, cosmopolitan;
Stemphylium

Phoradendron serotinum

(flavescens), FL, IN, MD, TX.
R OT , Heart. Ganoderma applanatum; Fomes
connatus, CT; Hericium erinaceus, NC.
R OT , Root. Phymatotrichum omnivorum, TX.
R OT , Wood. Daedalea confragosa; D. unicolor,
occasional; Lentinus spp., cosmopolitan;
Polyporus spp.; Stereum spp.; Trametes
rigida, Gulf states.
R UST . Aplopsora nyssae (II, III), MD to AL, TX.
W ILT , Seedling. Phytophthora cactorum, MO.

botryosum, occasional;

Curvularia inaequalis.
N EMATODE ,Root.Pratylenchus pratensis,MD.
N EMATODE , Root Knot. Meloidogyne spp., AL,
AZ, FL, OR, TX.
N ONPARASITIC . Brown Heart. Boron deficiency,
CA, MA, MN, VA, WI.
P OWDERY M ILDEW . Erysiphe polygoni, northeast-
ern states to CA, FL, TX, WA; Erysiphe
cruciferarum,WY.
R OT , Root. Phymatotrichum omnivorum, TX;
Pythium sp., NY.
R OT , Watery Soft. Sclerotinia sclerotiorum, CT,
MD, MS, TX, WA.
S CAB . Streptomyces

Tupidanthus

L EAF S POT . Alternaria panax, CA.

Turnip (Brassica rapa)

A NTHRACNOSE . Colletotrichum higginsianum,
NY to FL, TX.
B ACTERIAL Black Rot. Xanthomonas
campestris, ME to FL, MN, TX.
B ACTERIAL Blight. Pseudomonas syringae

scabies, CT, MI, NJ,

Canada.
S CAB , Acid. Streptomyces acidiscabies, ME.
V IRUS . Turnip Mosaic, AL; Beet Curly Top,
CA; Radish Mosaic; Turnip Ringspot, OH.
W HITE R UST ; White Blister. Albugo candida,
general.
W ILT ; Yellows. Fusarium oxysporum f. sp.
conglutinans, IN, MS, TX.
The control of turnip diseases is about the
same as for cabbage and other crucifers.

pv.

alisalensis, CA.
B ACTERIAL Crown Gall. Agrobacterium

tumefaciens, KS.
B ACTERIAL Leaf Spot. Pseudomonas syringae
pv. maculicola, OH; Xanthomonas
campestris pv. campestris, SC.
B ACTERIAL Soft Rot. Erwinia carotovora, gen-
eral in field, transit, storage.
B ACTERIAL Spot. Pseudomonas maculicola, CT,
GA, MA, TX; Xanthomonas vesicatoria pv.
raphani, IN.
B LACKLEG . Phoma lingam, CT, MA, WA.
B LIGHT , Southern. Sclerotium rolfsii, FL, TX.

Turpentine Tree (Syncarpia)

N EMATODE , Root Knot. Meloidogyne sp., FL.