Biology Reference
In-Depth Information
red-cedar, prostrate and Rocky Mountain juni-
pers, general; 0, I on apple, crabapple.
Of this lengthy list of juniper rusts the three
common apple rusts are most important in the
garden, not so much for the damage to this host
as for the harm to the deciduous fruit or ornamen-
tal. These three are the cedar-apple rust caused by
Gymnosporangium juniperi-virginianae
, the
hawthorn rust by
G. globosum
, and the quince
rust by
G. clavipes
. The latter is perennial in
juniper and may produce spores each spring for
as long as 20 years. Varieties of
Juniperus
chinensis
and
J. communis
and some other
forms are resistant to cedar-apple and cedar-
hawthorn rusts. If you have only a few red-cedars,
it is quite feasible to cut out galls in late winter,
before spores are produced.
Kerria
B
LIGHT
, Twig. Phomopsis japonica, NJ, OH,
TX.
C
ANKER
, Coral Spot. Nectria cinnabarina, NJ,
OR, WA.
L
EAF
S
POT
; Leaf and Twig Blight. Coccomyces
kerriae, widespread, eastern states to IA and
TX; Septoria sp., MD, NJ.
R
OT
,Root.Phymatotrichum omnivorum,TX.
Kidney Vetch, Lady's Fingers
(Anthyllis)
B
LIGHT
, Leaf and Stem. Fusarium sp., NC.
L
EAF
S
POT
. Phyllosticta sp., NC.
Kageneckia
Kiwi (Actinidia)
S
CAB
. Spilocaea botryae, CA.
B
ACTERIAL
Canker. Pseudomonas
syringae,
CA.
N
EMATODE
, Root Knot. Meloidogyne incognita,
SC.
R
OT
, Root and Wilt. Cylindrocladium
crotalariae, SC; Pythium ultimum, AL.
W
ILT
. Verticillium albo-atrum, Chile.
Kalanchoe
B
ACTERIAL
Crown
Gall.
Agrobacterium
tumefaciens.
B
ACTERIAL
Wilt and Soft Rot. Erwinia
carotovora pv. carotovora, FL.
B
LIGHT
, Flower. Stemphylium bolickii, FL;
S. floridanum f. sp. kalanchoe, also leaf
spot, FL.
L
EAF
S
POT
. Cercospora sp., MS.
R
OT
, Crown, Stem; Wilt. Phytophthora
cactorum, NJ, NY; Diplodia natalensis, AL.
V
IRUS
. Mosaic, FL; Kalanchoe Latent; Kalan-
choe Top-Spotting.
Kniphofia (Tritoma, Torch-Lily,
Poker-Plant)
L
EAF
S
POT
. Alternaria sp., AL.
N
EMATODE
, Root Knot. Meloidogyne sp., CA.
Knotroot Bristlegrass (Setaria
geniculata)
Kentucky Coffee-Tree (Gymnocladus)
B
LIGHT
. Beniowskia sphaeroidea, GA.
L
EAF
S
POT
. Cercospora gymnocladi, North cen-
tral states; Marssonin sp., Northeast;
Phyllosticta gymnocladi, IL.
R
OT
, Root. Phymatotrichum omnivorum, OK,
TX.
R
OT
, Wood. Polyporus pulchellus, IN, MI.
Kochia (Summer-Cypress)
D
AMPING
-O
FF
; Root Rot. Pythium debaryanum;
SD; Rhizoctonia solani, TX.
