Bipolaris sacchari
eyespot
Drechslera sacchari, Helminthosporium sacchari,Helminthosporium ocellum, Cercospora sacchari,Bipolaris stenospila, Helminthosporium stenospilum,Drechslera stenospila, Bipolaris ocella, Helminthosporium ocellum, Drechslera ocella
Worldwide, especially in tropic and subtropic regions
AL, FL, GA, HI, LA, MD
2022-10-09
fungus
Korea
sugarcane, millet
DRECSA
4 Known Hosts
Pennisetum spp.
pearl millet
No
DRECSA-3, DRECSA-1, DRECSA-8
Pathway not proven. Although Ingle and Raut (DRESCA-3), claim to have isolated Biipolaris sacchari from millet seed in India and Richardson (DRESCA-8), cites one study from 1954, there are no other references indicating that this fungus is a pathogen of millet in nature or is found on seed. It is unknown whether these seeds were cleaned or conditioned as a seed crop. This pathogen is of low economic importance.
Ingle RW; Raut JG, 1993. Fungi associated with glume and seed in pearl millet at different seed development stages. Seed Research, 21:131-132
Bipolaris sacchari In: Crop Protection Compendium. Wallingford, UK: CAB International. www.cabi.org/cpc.
Richardson, MJ, 1990. An Annotated List of Seedborne Diseases. International Seed Testing Association, Zurich, Switzerland
Saccharum officinarum
sugarcane
Yes
DRECSA-5, DRECSA-7
Although both references and CABI, 2018 indicate that this fungus can be found on seed, it is unclear as to importance of seed infection to disease development.
Yes
Blotter incubation
This method was used for research purposes and has not been validated or standardized.
DRECSA-7
Yes, Thiophanate-methyl (Topspin) gave 100% control in laboratory experiments. Captan ~90% control
Good cultural practices and sanitation have been shown to reduced disease incident. Resistant varieties are available.
DRECSA-7, DRECSA-6
Loveless and Smith, 1956. Seedling Blight of Sugarcane‐A New Disease Caused by Helminthosporium sacchari, Butler. Annals of Applied Biology 44:419-424
Sinha OK; Kishan Singh, 1983. Sugarcane seed decay: prevalence of fungi and collar rot of seedlings caused by Curvularia spp. and Drechslera spp. Seed Research 10:114-11
Wahid A; Saleem A; Ali S; Masoud T, 1990. Fungicidal control of seedling blight of sugarcane caused by Drechslera sacchari. Pakistan Journal of Phytopathology, 2:14-21
Triticum aestivum
wheat
No
DRECSA-4
Although Giri, et.al., 2001, claim to have isolated Bipolaris sacchari from wheat seed in India, there are no other references indicating that this fungus is a pathogen of wheat in nature or is found on seed. Seeds were from local production and it is unknown whether these seeds were cleaned or conditioned as a seed crop. CABI, 2018, considers this pathogen to be of low economic importance.
Giri GK; Gade RM; Patil CU, 2001. Seed borne Bipolaris sorokiniana in wheat and its chemical control. Journal of Soils and Crops, 11:109-112
Zea mays
corn
No
DRECSA-2
Although Subbaiah, et.al.,1982, claim to have isolated Bipolaris sacchari from corn seed in India, there are no other references indicating that this fungus is a pathogen of corn or is found on seed. Seeds were from local production and it is unknown whether these seeds were cleaned or conditioned as a seed crop. CABI, 2018, considers this fungus to be of low economic importance.
Yes
Blotter incubation
This method has not been standardized or validated.
DRECSA-2
Subbaiah PV; Shetty HS; Safeeulla KM, 1982. Incidence of seed-borne fungi in maize (Zea mays L.) and their significance. Indian Journal of Microbiology, 22:57-60
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