# ESKER
Product type: fungicide
Locale: uk
Source: https://tanstack-start-app.life-scientific-owned-by-cathal.workers.dev/uk/products/esker
Product record last updated: 2026-07-09T12:11:28.834186+00:00 (this is not a regulatory review date)

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.

Active ingredients: Prothioconazole 160 g/L, Tebuconazole 80 g/L
Formulation type: EC
Key uses (catalogue summary — approvals are per country, below): Powdery mildew, Septoria leaf spot, Glume blotch, Yellow rust, Brown rust, Tan spot, Ear disease complex, Fusarium ear blight, Reduction of mycotoxin deoxynivalenol, Eyespot, Net blotch, Rhynchosporium, Crown rust, Light leaf spot, Phoma leaf spot, Stem canker, Sclerotinia stem rot
Registered in: United Kingdom

## United Kingdom (GB)
- Registration status: active
- Registration number: not published
- Pack sizes: 5L

### Formulations and active ingredients for this country
- EC
  - Tebuconazole — 80 g/L (FRAC 3)
  - Prothioconazole — 160 g/L (FRAC 3)

### Official documents for this country
- Safety Data Sheet: https://pub-351cd84c0a1f4732bb5627f9d4f36882.r2.dev/ae8a50c201a735b797d6f8393438921c28ce9891.pdf
- Product Label: https://pub-351cd84c0a1f4732bb5627f9d4f36882.r2.dev/dd93884bf7762f0c2c927263d6a9d6dd08fa3bdd.pdf

### Approved uses and restrictions for this country
- Barley — BBCH: 61
- Oat — BBCH: 61
- Oilseed rape — PHI: 56 days
- Rye — BBCH: 71
- Wheat — BBCH: 71

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