Elymus spp.
wild rye grass
1 Related Pests
Ustilago bullata
fungus
Ustilago bromivora, Ustilago asprellae
Worldwide
Widespread
2021-05-18 18:12:05
This fungus attacks seed spikelets and is known to replace seed with fungal survival structures on all its hosts. It is not clear from the literature the exact distribution of this fungus, as well as its host range. Often used as a biocontrol agent on undesirable grasses.
brome grass, wild rye grass, wheat grass, barley grass, fescue grass
Yes
USTIBU-2,USTIBU-3,
This fungus attacks seed spikelets and is known to replace seed with fungal survival structures.
Visual examination during physical purity testing
USTIBU-2,USTIBU-3,
Visual inspection
AOSA/SCST,ISTA,
Common physical purity tests during routine seed quality testing should identify any infection by this fungus.
Normal seed cleaning and conditioning should eliminate any contamination of seed by this fungus.
Farr, D.F. and Rossman, A.Y. Fungal Databases, Systematic Mycology and Microbiology Laboratory, ARS, USDA. 2017, http://nt.ars-grin.gov/fungaldatabases/
Richardson, MJ, 1990. An Annotated List of Seedborne Diseases. International Seed Testing Association, Zurich, Switzerland
AOSA Rules for Seed Testing; www.analyzeseeds.com
International Rules for Seed Testing. International Seed Testing Association; www.seedtest.org
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