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Peronosclerospora sacchari (sugarcane downy mildew )
Peronosclerospora sacchari
sugarcane downy mildew
Sclerospora sacchari
Africa: Nigeria; Asia: China, India, Indonesia, Japan, Nepal, Philippines, Taiwan, Thailand, Vietnam; North Oceania: Fiji, Papua New Guinea, Timor-Leste.
Not known to occur.
2023-08-21
fungus
Mexico, Korea
Main: sugarcane, corn
PRSCSA
Peronosclerospora saccharine is spread through seeds with high moisture content. Once the moisture drops below 20% the mycelium loses its viabilitiy.
2 Known Hosts
Saccharum officinarum
sugarcane
No
PRSCSA-4
There is no evidence that true seed is a pathway for this pathogen. Transmission more common with propagative "seed sets" or other propagative material.
PRSCSA-4
Bonde, MR. 1982. Epidemiology of Downy Mildews of Maize, Sorghum and Pearl Millet. Tropical Pest Management 28:49-60
Zea mays
corn
Yes
PRSCSA-4, PRSCSA-6, McGEE
Pathogen is only transmitted with freshly harvested immature seed that has not been dried. Once dried (<20%), the pathogen is not transmitted.
Yes
Visual examination of the embryo
This test has not been validated or standardized.
PRSCSA-6
Metalaxyl
Seed storage and drying to less than 20% mositure eliminated seed transmission.
CABI CPC
0000-00-00 00:00:00
PRSCSA-4
Bonde, MR. 1982. Epidemiology of Downy Mildews of Maize, Sorghum and Pearl Millet. Tropical Pest Management 28:49-60
PRSCSA-6
Singh RS, Joshi MM, andChaube HS, 1968. Further evidence of the seedborne nature of Corn downy mildews and their possible control with chemicals. Plant Disease Reporter, 52:446-449.
McGEE
McGee, DC. 1988, Maize Diseases; A reference source for Seed Technoligists. American Phytopathological Society, St. Paul, MN USA
CABI CPC
Crop Protection Compendium. Wallingford, UK: CAB International. www.cabi.org/cpc.
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