Biology Reference
In-Depth Information
R
OT
, Root. Phymatotrichum omnivorum,
TX.
R
UST
. Endophyllum tuberculatum (III), IN, KS,
NE, OK, TX; Puccinia interveniens (0 I), NE,
NY, TX; II, III on Stipa; P. schedonnardi,
CO, KS, NE, OK, TX, UT.
W
ILT
. Verticillium albo-atrum, NY.
B
LIGHT
, Foliar. Phytophthora nicotianae, FL,
MO, NE, TX.
B
LIGHT
, Late. Phytophthora infestans, general,
common in Northeast, Middle Atlantic and
North central states, occasional elsewhere,
AK, FL.
B
LIGHT
, Southern. Sclerotium rolfsii, NC to FL,
AZ, OH.
B
LOTCH
, Leaf. Cercospora concors, GA, IN, MI,
NY.
D
ODDER
. Cuscuta sp., DE, NE, NJ, WA.
L
EAF
S
POT
. Ascochyta lycopersici, OR.
N
EMATODE
, Golden. Heterodera rostochiensis
(Globodera rostochiensis), DE, NY, Quebec,
Canada.
N
EMATODE
, Lesion. Pratylenchus brachyurus;
P. scribneri; P. negelectus; P. penetrans,
NY; P. penetrans and Verticillium dahliae,
interaction (stunting and rot), WA.
N
EMATODE
, Pale Cyst. Globodera pallida, ID.
N
EMATODE
, Ring. Criconemoides mutabile.
N
EMATODE
, Root Knot. Meloidogyne spp., gen-
eral; M. arenaria; M. chitwoodi, CO, TX,
WA, Pacific Northwest; M. hapla, Pacific
Northwest.
N
EMATODE
,
Portulaca
B
LIGHT
, Stem. Dichotomophthora indica, VA.
D
AMPING
-O
FF
. Rhizoctonia solani, I ;
Helminthosporium (Bipolaris) portulacae,
NC.
N
EMATODE
, Root Knot. Meloidogyne sp., AL.
R
OT
,
Black
Stem.
Dichotomophthora
portulacae, CA, TX.
V
IRUS
. Beet Curly Top, CA; Tomato Spotted
Wilt, NY.
W
HITE
R
UST
. Albugo portulacae,MTto
GA, MT, TX.
Potato (Solanum tuberosum)
Sting.
Belonolaimus
gracilis;
A
NTHRACNOSE
;
Black
Dot
Disease.
B. longicaudatus.
N
EMATODE
, Stubby-root. WA.
N
EMATODE
, Tuber. Ditylenchus destructor, ID.
N
ONPARASITIC
. Black Heart. Oxygen deficiency.
Blackening after Cooking. Drought, heat, defi-
cient light during tuber growth; potassium
deficiency, chilling.
Blackening before Cooking. Mechanical injury.
Checking. Skin rough, scruf. Partly fertilizer
injury, alkalinity.
Chlorosis; Tip blight, boron deficiency; Leaf
drop, magnesium deficiency.
Dimple. Depression at bud end and Dimple skin,
pits. Cause unknown.
Elephant Hide. Fertilizer burn, on Russet
Burbank.
Fasciation (tubers and aerial parts). Probably
genetic.
Giant Hill. Over-sized,
Colletotrichum
atramentarium
(
C.
coccodes
),
probably
general
after wilt;
Gloeosporium sp., IN, OH.
B
ACTERIAL
Blackleg. Erwinia carotovora pv.
atroseptica, general.
B
ACTERIAL
Canker. Vascular. Clavibacter
michiganense,WY.
Also on
Solanum ciliatum, S. gilo, S. guineense,
S. khasianum, S. nigrum, S. atropurpureum,
S. avioculare, S. carolinense, S.
indicum,
S. nodiflorum, S. quitoense
.
B
ACTERIAL
, MLO.
Aster Yellows, AR,
Purple-Top.
B
ACTERIAL
Ring Rot. Clavibacter sepedonicum,
general.
B
ACTERIAL
Soft Rot. Erwinia carotovora and E.
aroideae, cosmopolitan in transit and market.
B
ACTERIAL
Wilt. Pseudomonas solanacearum,
chiefly in the South; Ralstonia
solanacearum, race 3, biovar 2, WI.
B
LIGHT
, Early. Alternaria solani, general.
late-maturing plants.
Genetic factors.
Glassy End. Starch deficiency; high water
content.
