Cercospora sorghi
cercosporiosis
Worldwide
Southeast and Midwest states
2021-11-16
fungus
corn, maize, sorghum, columbus grass, johnson grass, sudan grass
CERCSG
Not common in Western Europe. Cercospora sorghi is usually considered a minor disease, except where susceptible cultivars are grown in areas where wet or humid and warm conditions prevail during the growing period of the crop. Most Cercospora species have teleomorph stages within the family Mycosphaerellaceae (Ascomycota), but no teleomorph is known for Cercospora sorghi.
3 Known Hosts
Sorghum bicolor
sorghum
No
CERCSG-1,CERCSG-4,CERCSG-6
Pathway not proven. References indicating seed may be a pathway only show possible seed contamination but not seed transmission (CERCSG-6) or speculate that seed may be a pathwayCERCSG-4, CERCSG-7). RICH ISTA does not consider seed a pathway for this pathogen.
Yes
Blotter incubation
Since seed as a pathway has not been proven, this test has not been validated or standardized.
CERCSG-6
Seed treatments such as thiram, have been described as a general protectant (not pathogen specific). Also common cultural practices for good seed quality should be practices, such as removal of alternative hosts, crop rotation, etc.
CERCSG-1
Cercospora sorghi In: Crop Protection Compendium. Wallingford, UK: CAB International. www.cabi.org/cpc.
Grey Leaf Spot or Cercospora Leaf Spot. 2017. Crop Gene Bank www.cropgenebank.sgrp.cgiar.org
Girish AG, Singh SD, Chakrabarty SK, Prasada Rao RDVJ, Surender A, Varaprasad KS, Bramel PJ. 2001. Seed microflora of five ICRISAT mandate crops. Seed Science and Technology Journal : 29: 429-443
Sorghum sudanense
sudan grass
No
CERCSG-1,RICH ISTA
Seed is not known to be a pathway for this pathogen in this host.
Zea mays
corn
No
CERCSG-1,RICH ISTA,ISF RPLD,McGEE
Seed is not known to be a pathway for this pathogen in this host.
Cercospora sorghi In: Crop Protection Compendium. Wallingford, UK: CAB International. www.cabi.org/cpc.
Richardson, MJ. 1990. An Annotated List of Seedborne Diseases. International Seed Testing Association, Zurich Switzerland.
International Seed Federation Regulated Pest List Database. pestlist.worldseed.org Nyon Switzerland
McGee, DC. 1988, Maize Diseases; A reference source for Seed Technoligists. American Phytopathological Society, St. Paul, MN USA
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