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Ascochyta sorghi (rough leaf spot of sorghum )
Ascochyta sorghi
rough leaf spot of sorghum
Ascochyta sorghina, Mycosphaerella ceres, Mycosphaerella exitialis, Sphaerella ceres, Sphaerella exitialis
Africa: Central African Republic, Chad, Congo, Eritrea, Gambia, Ghana, Guinea, Kenya, Niger, Nigeria, Senegal, Sudan, Tanzania, Togo; Asia: China, India, Japan, Myanmar, Pakistan; Europe: Czechia, Iceland, Italy; North America: Mexico, Panama, USA.
AL, FL, LA, MS, NC, OK, SC
2024-06-09
fungus
Sudan
sorghum, barley, Johnson grass, Sudan grass.
ASCOSO
2 Known Hosts
Sorghum bicolor
sorghum
No
ASCOSO-2,ASCOSO-3
Early reports of this pathogen indicated that Ascochyta sorghi spores may contaminate spikelet glumes but modern cleaning and conditioning and resistant varieties have essentially eliminated this contamination. The disease is not considered economically important.
Yes
Visual inspection
This method has not been verified or standardized. No recent data found on reliability.
ASCOSO-3,CABI CPC
Biological, Chemical, Cultural
High levels of resistance to rough leaf spot have been found among sorghum cultivars. Seed treatments reported from older articles, but no efficacy data reported. Seed cleaning and conditioning essentially removes any fungal contamination. Avoid planting in fields cropped to sorghum or Sudan grass is recommended.
CABI CPC
ASCOSO-2
TARR, S. A. J., 1962. Diseases of sorghum, Sudan grass and broom corn. Kew, Commonwealth Mycological Inst., 380 pp.
ASCOSO-3
Leukel RW; Martin JH; Lefebvre CL, 1944. Sorghum Diseases and Their Control. U. S. Dep. Agric. Farm. Bull. No. 1959
CABI CPC
Crop Protection Compendium. Wallingford, UK: CAB International. www.cabi.org/cpc.
Hordeum vulgare
barley
No
No references found indicating seed is a pathway. Rarely reported on barley and it is not considered an important host of the fungus in nature.
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