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Sharp Eyespot

The fungus can produce sclerotia, which may act as overwintering structures.Infection occurs at any time during the growing season.Cool autumn or spring temperatures (around 9°C) are associated with earlier infection and more severe disease.Disease also tends to be higher in acidic, dry and sandy soils.Symptoms occur as sharply defined lesions on the outer leaf sheaths.Young lesions have a clear, dark margin and, frequently, the epidermis within the lesion is shredded.

Multiple lesions can be found up the stem, up to 30 cm away from the stem base.Later in the season, lesions on the stem have a pale cream centre with a dark brown, sharply defined edge.Sharp eyespot lesions are often superficial, distinguishing it from eyespot where lesions may penetrate one or two leaf sheaths.Severe sharp eyespot can cause white heads or lodging.

Cyprodinil 30%+Fludioxonil 20% SC

Epoxiconazole 30% SC

Pyraclostrobin 25% SC

Difenoconazole 150g/l + Propiconazol 150g/l EC