Peronosclerospora philippinensis
phillipine downy mildew
Peronospora sacchar, Sclerospora phillipinensis, Sclerospora indica, Sclerospora maydis
Primarily tropical Asia (India, China, Thailand, Nepal, Taiwan), Indonesia, Japan, Philippines, South Africa, Congo, Mauritius, Great Britain
Not known occur. Reports of pathogen in the US have not been verified (PRSCPH-4)
2023-08-21 22:10:56
fungus
Mexico
corn, sorghum, surgarcane, oat. Many grass species also reported as hosts.
PRSCPH
Downing mildew caused by Peronsclerospora phillippensis is primarily a disease of tropical Asia and Africa.
4 Known Hosts
Zea mays
corn
Yes
PRSCPH-1,PRSCPH-4,ISF RPLD,McGEE
Pathogen is only transmitted with freshly harvested immature seed that has not been dried. Transmission ceased once seed is dried to less than 30% moisture.
Yes
Embryo examination
PRSCPH-1,PRSCPH-2
Mmetalaxyl, Ridomil; other systemic fungicides
Resistant cultivars available. Do not harvest immature seed and seed storage and drying to less than 20% mositure eliminated seed transmission.
PRSCPH-1,PRSCPH-3,PRSCPH-4
Peronosclerospora philippinensis In: Crop Protection Compendium. Wallingford, UK: CAB International. www.cabi.org/cpc.
Global Pest and Disease Database - Version 2.3.11, 2012; Pest ID 512. Developed by the Center for Integrated Pest Management; USDA
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
Singh, et. al. 1967, Internally seedborne nature of two downy mildews on Corn. Plant Disease Reporter 51; 1010-1012
Exconde OR, Molina AB, 1978. Note: Ridomil (Ciba-Geigy) a seed-dressing fungicide for control of Philippine corn downy mildew. Philippine Journal Crop Science, 3:60-64.
Sorghum bicolor
sorghum
No
No references found indicating seed is a pathway.
Saccharum officinarum
sugarcane
No
No references found indicating seed is a pathway.
Avena sativa
oat
No
No references found indicating seed is a pathway.
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