The Rothamsted Research Association

"Driving Science to the Field"

Current Newsletter

Newsletters are produced on a quarterly basis and are accessible by members. This is an excerpt from a recent newsletter.

Jan 2010

Septoria Resistance and Azole use 2010

Despite the excitement about new races of brown and yellow rust in recent seasons Septoria tritici remains the most damaging disease in UK wheat crops. The control of this disease depends on the continued use of azole fungicides. Without the azoles we would struggle to control Septoria in the UK. Chlorothalonil (Bravo) still plays an important role but has virtually no eradi- cant activity and the new SDHI (succinate- dehydrogenase inhibitors) fungicides such as bixafen and isopyrazam, although having some eradicant activ- ity, will need to be used in mixture with azoles. So what are the current issues with resistance in Septoria tritici and what impact will it have on future azole use?

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