Adapting fungicides to varieties

Lower risk varieties

Newer winter wheat varieties, such as Graham, offering improved resistance to Septoria tritici, can be an effective risk management tool.

By choosing one of these varieties you can benefit from flexibility in fungicide timings and potentially product choice and rates, dependent on other risk factors.

Breeding varieties to combat disease

We’ve been breeding wheat varieties for 30 years and disease resistance is a crucial part of this.

Using a resistant variety offers more flexibility, allows you to spread the workload on farm and maintains the efficacy of current chemistry. 


  • Including a triazole at T0 to get early control
  • Using 1 SDHI with a resistant variety
  • Mixing modes of action to protect against resistance issues
Breeding varieties to combat disease

Susceptibility of the variety planted is a major factor influencing disease risk

There are now big differences between varieties in their resistance ratings to Septoria tritici, Yellow rust and Brown rust on the AHDB Recommended List, and results from extensive trials at our Innovation Centres across the UK confirm a strong correlation between untreated disease levels and the yield response from fungicide treatment.
Accordingly, Adaptive Disease Management divides varieties into groups and directs greatest fungicide use to those where disease risks are greater and fungicide yield responses are higher.