
ESKER
Fungicide
- Prothioconazole
- 160 g/LFRAC 3
- Tebuconazole
- 80 g/LFRAC 3
ESKER is a broad-spectrum, systemic fungicide formulated as an emulsifiable concentrate containing 160 g/L prothioconazole and 80 g/L tebuconazole. It is designed for disease control in winter and spring crops of wheat, barley, oats, oilseed rape, and winter rye. The product is rapidly absorbed and translocated within the plant to control diseases such as powdery mildew, Septoria leaf spot, rusts, and ear disease complex, while also reducing mycotoxin deoxynivalenol levels.
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Key uses(17)
- Powdery mildew
- Septoria leaf spot
- Glume blotch
- Yellow rust
- Brown rust
- Tan spot
- Ear disease complex
- Fusarium ear blight
Registered in United Kingdom

Approved uses
Registration, documents and approved uses for this market.
Label & safety data
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Approved uses
| Crop | Targets | PHI | BBCH |
|---|---|---|---|
| Barley | — | — | 61 |
| Oat | — | — | 61 |
| Oilseed rape | — | 56d | — |
| Rye | — | — | 71 |
| Wheat | — | — | 71 |
Resistance management
Mode-of-action group, classified by the Fungicide Resistance Action Committee. Rotate products across different groups to slow resistance build-up.
Prothioconazole
Group 3
Tebuconazole
Group 3