10/10/18 - ADAMA's concerns regarding Ramularia resistance in barley, and the need for multi-site chemistry, are being backed by recent FAR trials.
The FAR trials show that Ramularia was the main disease present in autumn sown barley and was also prevalent, along with leaf rust, in spring sown barley.
Ramularia is resistant to strobilurins and has, of late, become less sensitive to the SDHI fungicides. The pattern in this country is following the well-documented experience in the UK and Ireland.
In the FAR trials, adding multi-site protectant fungicide Phoenix to Proline® in a two spray programme gave significantly better control of Ramularia than mixes of triazole with SDHI and, also, the highest yield (FAR Crop Action Edition 134, 14. September 2018). Further trials are planned for 2018/19.
It is an outcome that Adama has welcomed.