Sclerophthora rayssiae var. zeae
brown stripe downy mildew
Tropical Asia
Not known occur
2021-08-17
fungus
China
corn, crabgrasses
SCPHRZ
3 Known Hosts
Digitaria spp.
crabgrass
No
SCPHRZ-1, SCPHRZ-4
No references found indicating seed is a pathway. Maybe inferred because seed is a pathway in corn. Primarily soil borne.
Sclerophthora rayssiae var. zeae In: Crop Protection Compendium. Wallingford, UK: CAB International. www.cabi.org/cpc."
Singh JP, Renfro BL, Payak MM, 1970. Studies on the epidemiology and control of brown stripe downy mildew of maize (Sclerophthora rayssiae var. zeae). Indian Phytopathology, 23:194-208
Sorghum bicolor
sorghum
No
Not a host. No references found indicating sorghum is a host in nature.
Zea mays
corn
Yes
SCPHRZ-1, SCPHRZ-2, SCPHRZ-3, ISFRPLD
Oospores external, Hyphae may be internal.
Yes
Embryo staining and microscopic examination.
This test has not been validated or standardized.
SCPHRZ-2, SCPHRZ-1
Metalaxyl, other systemic fungicides
Resistant cultivars available. Cold storage reduced infection.
SCPHRZ-1, SCPHRZ-3, ISFRPLD
Sclerophthora rayssiae var. zeae In: Crop Protection Compendium. Wallingford, UK: CAB International. www.cabi.org/cpc."
Singh, et. al. 1967, Internally seedborne nature of two downy mildews on Corn. Plant Disease Reporter 51; 1010-1012
Global Pest and Disease Database - Version 2.3.11, 2012; Pest ID 600. Developed by the Center for Integrated Pest Management; USDA
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