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Causal organism - Fusarium
spp.
Primarily: F. avenaceum, F. culmorum, F. graminearum,
Microdochium nivale, F. poae
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Control
Because the fungus is present within the seed coat, rather than as a superficial contaminant on the seed surface, seed-borne infection is not easily controlled by surface-acting fungicides. Despite this, organomercury used to give acceptable control. All of the current recommended seed treatment fungicides are effective. While seed treatment greatly reduces the risks of seedling blight it will not afford adequate protection against later invasion by Fusarium species present in the soil.
Fungicides such as prothioconazole and boscalid, applied for the control of other diseases can give good control of stem base Fusarium infection.
