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Peronospora farinosa f. sp. betae (downy mildew of beet )
Peronospora farinosa f. sp. betae
downy mildew of beet
Peronospora schachtii
Africa: Kenya, Morocco; Asia: India, Iran, Nepal; Europe: Austria, Belgium, Czechia, Denmark, France, Germany, Hungary, Ireland, Italy, Netherlands, Poland, Portugal, Spain, Sweden, UK; North America: Canada, USA; Oceania: Australia, New Zealand; South America: Argentina, Brazil.
CA, OR, WA
2025-01-03
fungus
China
beet, sugarbeet
PEROFB
Transmission of the disease can be by oospores, perennial mycelium or by continual re-infection from living plants (CABI)
2 Known Hosts
Beta vulgaris
table beet, swiss chard
No
PEROFB-4, PEROFB-5, PEROFB-10
Table beet and chard may be hosts for this pathogen, but there is no evidence that seed is a pathway for this pathogen in these hosts.
2025-01-03 12:17:53
PEROFB-4
JKim, YChoi and H.D. Shin, 2009. Downy mildew caused by Peronospora farinosa f. sp. betae newly reported on Swiss chard in Korea. British Society for Plant Pathology *(BSPP) ,New Disease Reports 19: 40.
PEROFB-5
Byford W.J. 1981 Downy Mildew of beet and spinach. In: The Downy Mildews (ED. D. M. Spooner ) pp. 531-543, Academic Press London
PEROFB-10
Harveson, R.M., Hanson, L.E., and Hein, G.L. 2009. Compendium of Beet Diseases and Insects. 2nd Edition. St. Paul, MN: APS Press.
Beta vulgaris var. saccharifera
sugar beet
Yes
PEROFB-5, PEROFB-7, PEROFB-10
Though seed has been established as a pathway, it appears that seed transmission is very low and spread by propagative plant parts is more important
Yes
Grow out, Washing test
Grow out test was used for research in seed transmission studies.. These tests have not been validated or standardized.
PEROFB-5, PEROFB-7
Cultural
Good crop hygiene is recommended with separation of seed and root crops. Chemical treatments have not proven very successful.
CABI CPC
2025-01-03 12:18:07
PEROFB-5
Byford W.J. 1981 Downy Mildew of beet and spinach. In: The Downy Mildews (ED. D. M. Spooner ) pp. 531-543, Academic Press London
PEROFB-7
Leach L.D 1931.Downy mildew of the Beet, caused by Perono-spora schachtii Fuckel.Hilgardia1931 6 7 203-251 pp.
PEROFB-10
Harveson, R.M., Hanson, L.E., and Hein, G.L. 2009. Compendium of Beet Diseases and Insects. 2nd Edition. St. Paul, MN: APS Press.
CABI CPC
Crop Protection Compendium. Wallingford, UK: CAB International. www.cabi.org/cpc.
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