Biology Reference
In-Depth Information
L EAF S TRIPE . Burkholderia gladioli, Mexico.
L ESIONS , Stem. Rhizoctonia solani, MS.
N EMATODE , Lesion. Pratylenchus penetrans.
N EMATODE , Root Knot. Heterodera zeae, VA;
Meloidogyne
Corncockle (Agrostemma)
L EAF S POT . Gloeosporium sp., IN; Marssonina
delastrei, IL, IN, MI, MS, MO; Septoria
lychnidis var. pusilla, ND.
R OT , Root. Phymatotrichum omnivorum, TX.
R OT , Stem. Fusarium sp., IN.
chitwoodi,
Pacific NW;
M. hapla, Pacific NW.
R OOT D ISEASE . Fusarium oxysporum, F. solani,
F. acuminatum, F. proliferatum,MN.
R OT , Black Bundle Disease. Cephalosporium
acremonium, MT.
R OT , Dry Ear. Nigrospora sorghi, IA.
R OT , Ear, Root and Stalk; Seedling Blight.
Diplodia zeae, ME to VA, SD, TX; Fusarium
spp.;
Corn-Marigold (Chrysanthemum
segetum)
F. moniliforme,
cosmopolitan;
B ACTERIAL ,MLO.California Aster Yellows,CA.
L EAF S POT . Septoria chrysanthemi, NY.
Burkholderia gladioli, MS.
R OT , Root. Gibberella zeae, chiefly east of Mis-
sissippi River; Phoma terrestris, DE, MD;
Pythium spp., IL, IA, OH, TX;
Helminthosporium pedicellatrum, CA;
Exserohilum pedicellatum, TX; Phomus
terrestris, NC.
R OT , Stem. Burkholderia gladioli, Mexico.
R UST . Puccinia sorghi (II, III), general; 0, I on
oxalis; P. polysora, GA, Southern U.S.
S MUT . Ustilago maydis, general, FL, IL, MI, MN,
NY, TX,WI; Sphacelotheca reiliana, Head
Smut.
S MUT , False. Ustilaginoidea virens, MS.
V IRUS . Barley Yellow Dwarf, IL; Corn Leaf
Fleck; Corn Mosaic, Corn Stunt, AL, AZ,
CA, GA, IN, KY, MO, SC; Wheat Streak
Mosaic, CO, ID, IN, KS, MI, NE, OH, TX,
UT; Cucumber Mosaic, celery strain; Maize
Chlorotic Mottle, HI, KS, NE; Maize Dwarf
Mosaic, AL, AZ, AR, CA, GA, ID, IA, MO,
NJ, NM, NY, OH, PA, WA; Maize Rayado
Fino; Maize Stripe, FL; Sorghum Stunt
Mosaic, CA; Oat Blue Dwarf. Marafivirus,
North America, Great Plains.
W ILT ,S TUNT . Phytophthora sansomeana, OH.
W ILT ,
Corydalis
D OWNY M ILDEW . Peronospora corydalis, IN,
MD, MA, OK, TX.
L EAF S POT . Septoria corydalis, TX, WI.
N EMATODE . Meloidogyne sp., FL.
R UST . Puccinia aristidae (0, I), CO, KS,
NE; II, III on grasses; P. brandegei (III)
CO, WA.
Cosmos
B ACTERIAL , MLO. Aster Yellows, DE, NJ, NY,
and California Aster Yellows, CA.
B ACTERIAL Wilt. Pseudomonas solanacearum,
NC.
B LIGHT , Southern. Sclerotium rolfsii, MS.
C ANKER , Stem Blight. Diaporthe stewartii,CT
to NJ, CA, KS, SD, TX.
D ODDER . Cuscuta sp., NY.
L EAF S POT . Cercospora sp., TX; Septoria sp.,
CT.
M OLD , Gray. Botrytis cinerea, Brazil.
N EMATODE , Root Knot. Meloidogyne sp.
P OWDERY M ILDEW . Golovinomyces
cichoracearum, CA, MD, NE, NC, TX.
R OT , Root. Phymatotrichum omnivorum,
AZ, TX; Macrophomina phaseoli, TX;
Pythium sp., MD; Rhizoctonia solani, CT,
MD, TX.
Vascular.
Pantoea
agglomerans,
Mexico.
W ITCHWEED . Striga asiatica, on roots, NC.
Smut is the most conspicuous corn disease in
home gardens. Bacterial wilt is dependent on
survival of insect vectors and may be serious
after a warm winter unless resistant hybrids are
used.
Search WWH ::




Custom Search